Special Custom-made Product

The Real grade: The Real 1605SE-X Stereo Valve Tube Amplifier.

Completed 6/2020

Owner : Mr Chow (Hong Kong)

THE REAL grade  1605SE 22.5W+22.5W stereo power amplifier.

The input/driver stage is new design for EML 1605 power tube, The input  ECC82 tube use  Jupiter Copper foil (wax paper and Polypropylene film) coupling cap to 6V6GT / G  power tube to driver Hasimoto A-305 Interstage transformer, This new design driver stage got the wide frequency range and very good sound. The interstage transformer direct coupling to EML 1605 power tube , The EML 1605 power tube working at Class A SET Single Ended Triode mode to driver Tango X-3.5S output transformer , The Tango X-3.5 CUT CORE orient high B output transformer has very low Insertion Loss 0.2dB only.  ( Many tube power amplifier in Hi-End audio market , Their have the output transformers is over 1dB Insertion Loss . only about 10% very high price tube amplifier use under 1dB Insertion Loss of output transformer ) . The output transformer has low insertion loss is very important , the best of the best is 0 dB Insertion Loss , The output transformers for High End tube amplifier need under 1dB  Insertion Loss . The Insertion Loss over 1.5dB output transformer will lost many low level music.

Features

• Class A Single Ended Triode no negative feedback
• The two power transformer are Hasimoto  transformer , made in Japan.
• The output transformer is Tango X-3.5S CUT CORE orient high B output transformer , made in Japan
• The Choke is Hasimoto CUT CORE orient high B choke.
• The power supply with two separately HVB+ power supply for power output stage and  input driver stage.
• The power supply of power stage with 2 pcs 5R4 rectifier tubes
• New design driver stage ECC82 to 6V6-GT / G to interstage to 1605
• Hasimoto A-305 Interstage Transformer to driver EML1605 power tube.
• Coupling cap use  Jupiter Copper foil (wax paper and Polypropylene film) coupling cap
• The speaker connections is Audio Note
• RCA connections is WBT

Specifications

The Real-X grade,  AD1 SE stereo power amplifier

Completed 4/2020

Owner : Kevin (Hong Kong)

The input/driver stage is new design for AD1 power tube, The input stage AC2  tube use  Duelund CAST DC Silver coupling cap to driver stage EML 20A-Mesh tube, The driver stage use  Duelund CAST DC Silver coupling cap to AD1 power tube , The AD1 power tube working at Class A SET Single Ended Triode mode to driver Magnequest FS-030 output transformer .

Features

• Class A Single Ended Triode no negative feedback
• New design driver stage with AC2 and EML 20A-Mesh tubes 
• The power supply with two separately HVB+ power supply for power output stage and  input driver stage
• One Hasimoto power transformer with Hasimoto C-core choke and RGN4004 rectifier tubes for power output stage..
• One Hasimoto power transformer with Hasimoto C-core choke and RGN1064rectifier tubes for driver stage..
• Duelund CAST DC Silver coupling cap
• Hook-up wire: Duelund DCA20GA / DCA16GA / Silver Foil ver2.0, VH-Audio pure  Silver 18GA, Furutech pure Silver
• Resistors: Amtrans AMRG , Caddock MK123V, Mills MRA12, CGW 3W.
• Electrolytic Capacitors: Audio Note Kaisei, Block Gate (Heart of Muse), Jensen, Elna.
• Magnequest FS-030 Output Transformer
• Hasimoto special grade Power Transformer
• The speaker and RCA connections: Audio Note Silver. 

Specifications

The Reference grade  6C33C Push-Pull Mono Block power amplifier

YSA6C33C-Reference

Completed 2/2020

Owner : Mr Efkowitz (United States)

• 6C33C PP Class A 55W.
• The power transformer is R-Core  transformer.
• The output transformer is Sowter 3 inch Grain Oriented (M6) laminated output transformer , made in United Kingdom
• The Choke is Poshan (Kong Kong) Z11 EI Choke for each CH.
• The power supply with two separately HVB+ power supply for power output stage and  input driver stage 
• The input transformer for balanced input is Jensen
• All coupling cap use MultiCap RTX

Specifications

The special version of THE REAL 300B-MB Mono Block Power Amplifier

The Real 300B-MB Plus.

Completed 12/2019

Owner : Mr Chan (Hong Kong)

The input/driver stage is new design for 300B power tube, The input stage 6SN7 tube use M-CAP® Supreme Silver / Gold & Oil coupling cap to driver stage 6SN7 tube, The first driver stage use V-Cap CuTF coupling cap to second driver stage 71A triode power tube to driver Hasimoto A-105 Interstage transformer, This new design driver stage got the wide frequency range and very good sound. The interstage transformer direct coupling to 300B power tube , The 300B power tube working at Class A SET Single Ended Triode mode to driver Hasimoto H-30-3.5S output transformer , The Hasimoto Hasimoto H-30-3.5S CUT CORE orient high B output transformer has very low Insertion Loss 0.3dB only.  ( Many tube power amplifier in Hi-End audio market , Their have the output transformers is over 1dB Insertion Loss . only about 10% very high price tube amplifier use under 1dB Insertion Loss of output transformer ) . The output transformer has low insertion loss is very important , the best of the best is 0 dB Insertion Loss , The output transformers for High End tube amplifier need under 1dB  Insertion Loss . The Insertion Loss over 1.5dB output transformer will lost many low level music.

    This power amplifier case structure and parts arrangement are perfect, the signal path is directly and shortly connected. Great heat dissipation, an anti-shock and anti-RF function to guarantee it works at a very stable status. For sure, this machine is produced by point-to-point methodology. 

Features

• Class A Single Ended Triode no negative feedback
• New design 6SN7 and 71A triode tubes with driver interstage
• The power supply with two separately HVB+ power supply for power output stage and  input driver stage
• One Hasimoto power transformer with Hasimoto C-core choke and 5U4G(274B) rectifier tubes for power output stage..
• One Hasimoto power transformer with Hasimoto C-core choke and 5U5G (274B)rectifier tubes for driver stage..
• M-CAP® Supreme Silver / Gold & Oil coupling cap
• V-Cap CuTF coupling cap
• Hasimoto A-105 Interstage Transformer to driver 300B power tube.
• Hasimoto H-30-3.5S CUT CORE orient high B Output Transformer
• Hasimoto special grade Power Transformer
• The speaker connections is Star(Germany)

  　

Hasimoto A-105 CUT CORE orient high B Interstage Transformer

Hasimoto H-30-3.5S CUT CORE orient high B Output Transformer

Specifications

The Real grade,  EML 320B-XLS , EML 300B-XLS , KR 842 , KR 300B-XLS SE Mono Block power amplifier

The Real 320B-MB

Completed 5/2019

Owner : Mr Chan (Hong Kong)

   The 5687WB input tube use Jupiter Copper foil (wax paper and Polypropylene film) coupling cap to 5687WB driver tube to driver Hashimoto A-115 Interstage transformer, This new design driver stage got the wide frequency range and very good sound. The interstage transformer direct coupling to power tube. The EML300B-XLS / EML320B-XLS / 842  tube work at Class A Single Ended Triode mode and fix bias to driver Hashimoto high quality output transformer , The Hashimoto H-30-3.5U CUT CORE orient high B output transformer has very low Insertion Loss 0.3dB only.  ( Many SET tube power amplifier in Hi-End audio market , Their have the output transformers is over 2dB Insertion Loss . only about 10% very high price tube amplifier use under 1dB Insertion Loss of output transformer ) . The output transformer has low insertion loss is very important , the best of the best is 0 dB Insertion Loss , The output transformers for High End tube amplifier need under 1dB  Insertion Loss . The Insertion Loss over 1.5dB output transformer will lost many low level music. 

    This power amplifier case structure and parts arrangement are perfect, the signal path is directly and shortly connected. Great heat dissipation, an anti-shock and anti-RF function to guarantee it works at a very stable status. For sure, this machine is produced by point-to-point methodology. 

Features

• Class A Single Ended Triode no negative feedback
• The power supply with two separately HVB+ power supply for power output stage and  input driver stage ( Two power transformers )
• The power transformer is Hashimoto  transformer , made in Japan.
• The output transformer is Hashimoto H-30-3.5U special grade CUT CORE orient high B output transformer , made in Japan.
• Hashimoto A-115 Interstage Transformer driver the power tube.
• The Choke is Hashimoto C-10-200W CUT CORE orient high B.
• Fix Bias
• Emission Labs 300B-XLS  ,  EML320B-XLS / 842  , KR 842, KR 300B-XLS power tube.
• Coupling cap use  Jupiter Copper foil (wax paper and Polypropylene film) coupling cap
• The speaker connections is Star (Germany)
• The inside wire have uses IN-AKUSTIK ,  Sommer cable.

Hashimoto A-115 CUT CORE orient high B Interstage Transformer

Hasimoto H-30-3.5S CUT CORE orient high B Output Transformer

EML 300B-XLS:
http://www.emissionlabs.com/datasheets/EML300B-XLS.htm

EML 320B-XLS / 842:
http://www.emissionlabs.com/datasheets/EML320B-XLS.htm

Specifications

The special version KT150  UL Push-Pull Stereo power amplifier

Completed 2/2019

Owner : (Hong Kong)

Features

• KT150 power tube 
• New design 12AU7 , 5687WA ,6H30 driver
• Dual mono power supply
• Tamura F-7021 Permalloy Core Output Transformer

Specifications

The special version KT77 x 6 Triode Push-Pull mono block power amplifier

Completed 4/2018

Owner :Mr Yim  (Hong Kong)

Features

The input stage is 12AU7 tube and 12AU7 tube driver to three pair KT77 power tubes work at Class AB1 Triode Push-Pull mode to driver Hasimoto output transformer , The Hasimoto special grade CUT CORE orient high B output transformer has very low Insertion Loss 0.13dB only.  ( Many tube power amplifier in Hi-End audio market , Their have the output transformers is over 1dB Insertion Loss . only about 10% very high price tube amplifier use under 1dB Insertion Loss of output transformer ) . The output transformer has low insertion loss is very important , the best of the best is 0 dB Insertion Loss , The output transformers for High End tube amplifier need under 1dB  Insertion Loss . The Insertion Loss over 1.3dB output transformer will lost many low level music.

The  use highest quality transformers and parts .

• All power transformers is special model Hasimoto transformer , high current , low noise . 
• Hasimoto C-core choke for power output stage
• The output transformer is Hasimoto special grade CUT CORE orient high B.wide frequency range , low distortion , low phase shift , good damping factor .
• The power supply with two separately HVB+ power supply for power output stage and  input driver stag
• Gold Lion KT77 three match pair.
• Coupling cap use AudioCap
  
  　

Hasimoto special grade CUT CORE orient high B output transformer.

Specifications

The special version Western Electric VT-25-A stereo power amplifier

Completed 12/2017

Owner : Nelson (Hong Kong)

   The input  6SN7 tube use Rel-cap RT coupling cap to driver Western Electric VT-25-A, This driver stage got the wide frequency range and very good sound. The Western Electric VT-25-A tube work at Class A Single Ended Triode mode to driver Hasimoto H-20-14U high quality output transformer , The Hasimoto H-20-14U CUT CORE orient high B output transformer has very low Insertion Loss 0.3dB only.  ( Many SET tube power amplifier in Hi-End audio market , Their have the output transformers is over 2dB Insertion Loss . only about 10% very high price tube amplifier use under 1dB Insertion Loss of output transformer ) . The output transformer has low insertion loss is very important , the best of the best is 0 dB Insertion Loss , The output transformers for High End tube amplifier need under 1dB  Insertion Loss . The Insertion Loss over 1.5dB output transformer will lost many low level music. 

Features

• Class A Single Ended Triode no negative feedback
• 6SN7 driver tubes
• Hasimoto H-20-14U CUT CORE orient high B Output Transformer
• Hasimoto CC-10-200W Choke 
• Hasimoto PT-250 Power Transformer

Specifications

The special version 2A3 SE stereo power amplifier

Completed 11/2017

Owner : Dick (Hong Kong)

   The input  6SN7 tube use Duelund CAST Cu/Ag Hybrid coupling cap to 6SN7 tube to driver Hasimoto A-107 Interstage transformer, This new design driver stage got the wide frequency range and very good sound. The interstage transformer direct coupling to 2A3 power tube. The 2A3 tube work at Class A Single Ended Triode mode to driver Hasimoto H-20-3.5U high quality output transformer , The Hasimoto H-20-3.5U CUT CORE orient high B output transformer has very low Insertion Loss 0.3dB only.  ( Many SET tube power amplifier in Hi-End audio market , Their have the output transformers is over 2dB Insertion Loss . only about 10% very high price tube amplifier use under 1dB Insertion Loss of output transformer ) . The output transformer has low insertion loss is very important , the best of the best is 0 dB Insertion Loss , The output transformers for High End tube amplifier need under 1dB  Insertion Loss . The Insertion Loss over 1.5dB output transformer will lost many low level music. 

Features

• Class A Single Ended Triode no negative feedback
• 6SN7 driver tubes
• Duelund CAST Cu/Ag Hybrid coupling cap
• Hasimoto A-107 Interstage Transformer driver the power tube.
• Jensen input transformer for balanced (XLR) input.
• Hasimoto H-20-3.5U CUT CORE orient high B Output Transformer
• Hasimoto C-10-200W Choke 
• Hasimoto PT-220 Power Transformer

Specifications

The special version of VIVALDI V2 ( 845 SE ) mono block Integrated  Valve Tube Amplifier

Completed 10/2017

Owner :Mr Fung  (Canada)

Features

• Mono Block integrated amplifier
• 845 Class A Single Ended Triode no negative feedback
• The two power transformer are Hasimoto  transformer , made in Japan.
• The output transformer is Hasimoto special grade CUT CORE orient high B output transformer , made in Japan
• The Choke is Hasimoto C-10-200W CUT CORE orient high B.
• The power supply with two separately HVB+ power supply for power output stage and  input driver stage.
• The power supply of power stage with 2pcs GZ34 rectifier tubes
• New design input and driver for 845SE , 6DJ8 and 6BX7GT with choke load.
• Remote volume control.
• Coupling caps use MultiCap RTX
• The speaker connections is Star(Germany)
• The inside wire have uses IN-AKUSTIK ,  Sommer cable.

Hasimoto special grade CUT CORE orient high B Output Transformer for 845 SET.

Specifications

The special version YSA300S Reference mono block power amplifier

YSA300S-XL Reference ( use Sowter UK output transformer )

Completed 9/2017

Owner :Mr Lee  (Hong Kong)

• The power transformer is R-Core  transformer.
• The output transformer is Sowter 3 inch Grain Oriented (M6) laminated output transformer , made in United Kingdom
• The Choke is Poshan (Kong Kong) Z11 EI Choke for each CH.
• The input transformer for balanced input is Jensen
• All coupling cap use AudioCap Theta.
• The speaker and RCA connections is Cardas
• The inside wire have uses IN-AKUSTIK cable

Specifications

The YSA300X-XL Reference in Mr Lee listen room.

The special version 300B SE stereo power amplifier

Completed 8/2017

Owner :羅先生 (Hong Kong)

   The input  6SN7 tube use M-CAP® Supreme Silver / Gold & Oil coupling cap to 6SN7 tube to driver Hasimoto A-107 Interstage transformer, This new design driver stage got the wide frequency range and very good sound. The interstage transformer direct coupling to 300B power tube. The 300B tube work at Class A Single Ended Triode mode to driver Hasimoto H-20-3.5U high quality output transformer , The Hasimoto H-20-3.5U CUT CORE orient high B output transformer has very low Insertion Loss 0.3dB only.  ( Many SET tube power amplifier in Hi-End audio market , Their have the output transformers is over 2dB Insertion Loss . only about 10% very high price tube amplifier use under 1dB Insertion Loss of output transformer ) . The output transformer has low insertion loss is very important , the best of the best is 0 dB Insertion Loss , The output transformers for High End tube amplifier need under 1dB  Insertion Loss . The Insertion Loss over 1.5dB output transformer will lost many low level music. 

Features

• Class A Single Ended Triode no negative feedback
• 6SN7 driver tubes
• M-CAP® Supreme Silver / Gold & Oil coupling cap
• Hasimoto A-107 Interstage Transformer driver the power tube.
• Jensen input transformer for balanced (XLR) input.
• Hasimoto H-20-3.5U CUT CORE orient high B Output Transformer
• Hasimoto CC-10-200W Choke 
• Hasimoto PT-220 Power Transformer

Specifications

The special version YSA300S Reference mono block power amplifier

YSA300S-XL Reference ( use CJ P1 output transformer )

Completed 5/2017

Owner :Mr Lee  "Limage Lee"  (Hong Kong)

• The power transformer is R-Core  transformer.
• The output transformer is CJ P1 output transformer , made in United Kingdom.
• The Choke is Poshan (Kong Kong) Z11 EI Choke for each CH.
• The input transformer for balanced input is Jensen
• All coupling cap use AudioCap Theta.
• The speaker and RCA connections is Cardas
• The inside wire have uses IN-AKUSTIK cable

Specifications

The YSA300X-XL Reference in Mr Lee listen room.

The special version 6C33C SE stereo power amplifier .

Completed 5/2017

Owner :Mr Kolb ( Switzerland )

Features

• 5687WB driver tubes
• Class A Single Ended Triode no negative feedback
• All coupling cap use AudioCap Theta
• Fix Bias
• Hasimoto H-20-600 Output Transformer
• Hasimoto Choke 
• Hasimoto Power Transformer

Hasimoto H-20-600 Output Transformer

Specifications

The Real grade: The Real 1605 Stereo Valve Tube Amplifier.

Completed 7/2016

Owner : Mahi (Hong Kong)

THE REAL grade  1605SE 25W+25W stereo power amplifier.

Features

• The two power transformer are Hasimoto  transformer , made in Japan.
• The output transformer is Hasimoto special grade CUT CORE orient high B output transformer , made in Japan
• The Choke is Hasimoto CUT CORE orient high B choke.
• The power supply with two separately HVB+ power supply for power output stage and  input driver stage.
• The power supply of power stage with 2 pcs 5R4-GYB rectifier tubes
• New design driver stage 12AU7 to 6V6-GT to interstage to 1605
• Hasimoto A-305 Interstage Transformer to driver EML1605 power tube.
• The speaker connections is Cardas
• The inside wire have uses IN-AKUSTIK ,  Sommer cable.

Specifications

The Reference grade power amplifier

Reference-One MK3 mono amplifier.

Completed 6/2016

Owner : 曾(Hong Kong)

Features

The new design input stage is 12AU7  direct coupling to 5687WB driver stage to 6H30 cathode follow driver stage , The driver stage uses AuricapXO coupling cap to KT150 power tube , The KT150 work at Class AB1 UL P-P mode to driver Hasimoto output transformer , The Hasimoto special grade CUT CORE orient high B output transformer has very low Insertion Loss 0.15dB only.  ( Many tube power amplifier in Hi-End audio market , Their have the output transformers is over 1dB Insertion Loss . only about 10% very high price tube amplifier use under 1dB Insertion Loss of output transformer ) . The output transformer has low insertion loss is very important , the best of the best is 0 dB Insertion Loss , The output transformers for High End tube amplifier need under 1dB  Insertion Loss . The Insertion Loss over 1.5dB output transformer will lost many low level music.

The power supply with two separately HVB+ power supply for power output stage and  input driver stage.

The components ,  NFB value , tube type , circuit all select by listen test.

• The two power transformer is R-Core  transformer.
• The output transformer is Hasimoto special grade CUT CORE orient high B.wide frequency range , low distortion , low phase shift , good damping factor
• Two Choke are Poshan (Kong Kong) Z11 EI Choke .
• The power supply with two separately HVB+ power supply for power output stage and  input driver stage.
• The new design input driver stage
• The input transformer for balanced (XLR) input is Jensen (made in USA )
• All coupling cap use AuricapXO
• The speaker and RCA connections is Cardas
• The inside wire have uses IN-AKUSTIK and Sommer cable
  

Hasimoto special grade CUT CORE orient high B output transformer.

Specifications

The Real grade: 211SE Mono Block Power Amplifier.

Completed 5/2016

Owner : Mr 孙 (China)

THE REAL grade  211SE 25W mono block power amplifier.

Features

• The two power transformer are Hasimoto  transformer , made in Japan.
• The output transformer is Hasimoto special grade CUT CORE orient high B output transformer , made in Japan
• The Two Choke is Hasimoto CUT CORE orient high B choke.
• The power supply with two separately HVB+ power supply for power output stage and  input driver stage.
• The power supply of power stage with 2 pcs GZ34 rectifier tubes
• Hasimoto A-305 Interstage Transformer to driver 211 power tube.
• The speaker connections is Cardas
• The inside wire have uses IN-AKUSTIK ,  Sommer cable.

Specifications

The special version 2A3 SE stereo power amplifier .

Completed 5/2016

Owner :呂先生 ( Hong Kong )

Features

• 5697WB driver tubes
• SONICAP coupling capacitor
• Hasimoto H-20-3.5U CUT CORE orient high B Output Transformer
• Hasimoto CC-10-200W Choke 
• Hasimoto Power Transformer

Specifications

Full set system for JBL DD66000

Completed 3/2016

Owner :Mr 梁 ( Taiwan )

The Real grade tubes electronic crossover with Reference one MK3 tube line preamplifier

The line preamplifier with electronic crossover together.

The mono block with external power supply , 4 unit design.

This tubes electronic crossover is special design for JBL66000 speaker.

It use T-LC type design.

Tubes use 6DJ8x2, 6C45x2, 12B4 x4 , 5687WB x2 , EZ80 x4.

YSA300S - Reference mono block power amplifier

300W KT120 power amplifier for driver DD66000 low frequency.

SONATAS - Reference MK2  Stereo Valve Tube Power Amplifier

82W KT120 power amplifier for driver DD6600 high frequency

http://www.ys-audio.com/sonrefe.htm

The Level 4 special version 300B PSE mono block power amplifier .

Completed 2/2016

Owner :Mr Ma ( Hong Kong )

Features

• 5687WA(USA) driver tubes
• SONICAP coupling capacitor
• Jensen input transformer for balanced (XLR) input.
• Hasimoto H-20-3.5U CUT CORE orient high B Output Transformer
• Hasimoto CC-10-200W Choke 
• Hasimoto PT-220 Power Transformer

Specifications

The Real grade: VIVALDI  211SE  Integrated Stereo Valve Tube Amplifier.

Completed 1/2016

Owner : Mr Yip (Hong Kong)

VIVALDI  is a 211 SE 25W x 2 Stereo Valve Tube Integrated Amplifier

Features

• The two power transformer are Hasimoto  transformer , made in Japan.
• The output transformer is Hasimoto special grade CUT CORE orient high B output transformer , made in Japan
• The Choke is Hasimoto C-10-200W CUT CORE orient high B.
• The power supply with two separately HVB+ power supply for power output stage and  input driver stage.
• The power supply of power stage with 4pcs GZ34 rectifier tubes
• Coupling caps use Mundorf Mcap EVO SilverGoldOil and Cardas
• Jensen input transformer for balanced (XLR) input.
• The speaker connections is Cardas
• The inside wire have uses IN-AKUSTIK ,  Sommer cable.

Specifications

The special version 300B PSE mono block power amplifier .

Completed 5/2015

Owner :Mr Wong ( Hong Kong )

The 300Bx2 PSE 17W mono block.

Features

• 300Bx2  PSE 
• New design 12AU7 and 5687WA driver tubes.
• UniCrystal OCC (Ohno Continuous Cast) Copper wire and PCOCC copper wire.
• Hasimoto A-305 Interstage Transformer to driver 300Bx2 power tube.
• Audio Note (UK) orient high B Output Transformer
• Hasimoto C-10-200W Choke 
• Audio Note Power Transformer

Specifications

The special version PX25 SE stereo power amplifier .

Completed 4/2015

Owner :Kevin ( Hong Kong )

Features

• MH4 driver tubes
• AudioCap Theta coupling capacitor
• Hasimoto H-20-7U CUT CORE orient high B Output Transformer
• Hasimoto C-10-200W Choke 
• Hasimoto Power Transformer

Specifications

The Real grade:

KT150 stereo power amplifier

Completed 4/2015

Owner : 陳先生(香港)

Features

• KT150 power tube 
• New design 12AU7 , 5687WA ,6H30 driver
• The power supply with two separately HVB+ power supply for power output stage and  input driver stage
• Tango input transformer for XLR input
• Tango X-5P CUT CORE orient high B Output Transformer
• Two Tango Choke for power stage and driver stage
• Two Tango power transformer for power stage and driver stage

Specifications

The Real grade:

THE REAL EML1605 PP full balanced mono block power amplifier

Completed 8/2014

Owner : 張先生(上海)

Full balanced design . EML1605 PP power amplifier.

Features

• EML 1605 Super Triode power tube 
• New design 12AU7 and 5687WA driver tubes working at SE mode.
• UniCrystal OCC (Ohno Continuous Cast) Copper wire and PCOCC copper wire.
• Hasimoto A-305 Interstage Transformer to driver EML 1605 power tube.
• Hasimoto HW-100-5 CUT CORE orient high B Output Transformer
• Hasimoto C-10-200W Choke 
• Hasimoto special grade Power Transformer

The special version 211SE 25W+25W stereo power amplifier .

Completed 5/2014

Owner :Kevin ( Hong Kong )

Specifications

The special version SIEMENS F2a11 PP 40W mono block power amplifier .

Completed 4/2014

Owner :Chris ( Hong Kong )

Features

• 12AU7x2 input and driver tubes
• Amtrans Golden Black coupling capacitor
• Hasimoto HW-60-5 CUT CORE orient high B output transformer , made in Japan
• Hasimoto C-10-200W CUT CORE Choke 
• Hasimoto Special Power Transformer

Specifications

The Special version Sonatas- Reference MK2 Stereo Valve Tube Power Amplifier

Completed 4/2014

Owner :Mr劉 ( Hong Kong )

The special version SONATAS-I  Integrated Stereo Valve Tube Amplifier

Completed 4/2014

Owner :Mr Joseph ( Hong Kong )

• The power transformer is Hasimoto  transformer , made in Japan.
• The output transformer is Hasimoto HW-60-5 CUT CORE orient high B output transformer , made in Japan
• Russian 6C51H-B Nuvistor triode tube working at Class-A for Line stage
• Gold Lion KT88
• coupling cap use Sonicap

Specifications

The special version 2A3 SE stereo power amplifier .

Completed 3/2014

Owner :Mr Wong ( Hong Kong )

Features

• 6SN7 driver tubes
• SONICAP coupling capacitor
• Hasimoto H-20-3.5U CUT CORE orient high B Output Transformer
• Hasimoto CC-10-200W Choke 
• Hasimoto PT-160 Power Transformer

Specifications

Upgrade the EL156 x4 PP Mono Block Power amplifier.

These EL156 power amplifier are completed at 8/2010. about the info please see there

We upgraded they at 1/2014.

We design and build a new input and driver stage for they.

The result is improve the S/N and THD.

Specifications

The Reference 6L6 stereo power amplifier .

Completed 1/2014

Owner :Mr Joe ( Hong Kong )

Specifications

The Real grade tubes electronic crossover with Reference one MK2 tube line preamplifier

Completed 11/2013

Owner : KK ( Macao )

The line preamplifier with electronic crossover together.

The mono block with external power supply , 4 unit design.

This tubes electronic crossover is special design for TAD 2404 speaker.

It use T-LC type design.

Tubes use 12AU7x2, WE417Ax2, 12B4 x4 , 5687WB x2 , 6X5 x2.

The YSA300B-XLS special version power amplifier .

Completed  11/2013

Owner : Hiendy member friend ( Hong Kong )

Emission Labs 300B XLS power tube.

5687WA driver tube.

5AR4 .

• The power transformer is Hasimoto  transformer , made in Japan.
• The output transformer is Hasimoto H-30-3.5S CUT CORE orient high B output transformer , made in Japan
• The Choke is Hasimoto C-10-200W CUT CORE orient high B.
• All coupling cap use V-Cap CuTF
• The speaker and RCA connections is Cardas
• The inside wire have uses Furutech and Sommer cable

The Reference KT120 stereo power amplifier .

Completed 10/2013

Owner :Mr 孙 ( Beijing , China )

The YSA300B special version.

This special version use Emission Labs 300B XLS tube.

Completed  8/2013

Owner : Mr Derek Lam ( Hong Kong )

The Reference grade 300B SE stereo power amplifier

Completed 7/2013

Owner :Mike ( Hong Kong )

 

---

　

The Reference grade tubes electronic crossover

Completed 6/2012

Owner : Mr 梁 ( Hong Kong )

The mono block with external power supply , 4 unit design.

This tubes electronic crossover is special design for JBL DD66000 speaker.

It use T-LC type design, 2way 24dB Linkwitz-Riley .

Tubes use 12B4 x4 , 5687WB x2.

The Reference grade 211 SE power amplifier .

Completed 9/2011

Owner :Mr 孙 ( Beijing , China )

The Reference grade power amplifier .

Completed 11/2010

Owner :Mr Jonas (Canada)

300B x4 PP mono block power amplifier

output transformer Tango XE-60 grade (60W) for 300B x4 output.
Tango LC grade Choke.
Tango power transformer.

Output : 40W watts from 20Hz to 20kHz +/- 0.5dB.

Input : RCA x 1

Input Impedance : 100K ohm

Frequency Response: 8Hz ~ 50K +/-1dB at 1W.

S/N: ＞105dB

Input Sensitivity: 1.4V RMS rated output.

Output Taps: 4 ohm , 8 ohm , 16 ohm.

Damping factor : approximately 20

The Reference grade power amplifier .

Completed 8/2010

Owner : Mr Lap (Hong Kong)

EL156 x4 PP Mono Block Power amplifier.
120W at 30Hz , Max 200W .

Complement :  
Tango FC-120-5 output transformer , Tango LC-5-250D Choke , Sowter main transformer.
Jensen input transformer , V-cap coupling caps, Cardas RCA and speaker connections.

Input tube 12AU7 , Driver tube 12AU7 , Power tube Telefunken EL156 x4.

Mr Lap use they drive MBL 101 MK2 speaker.

The Reference grade Phono preamplifier.

Completed 12/2009

Owner : Mr Lap (Hong Kong)

It is TOP Reference grade Phono preamplifier.

It will a new product to 2010 , The product series name is "THE REAL"

The mono block with power supply of 4 unit design. 

It use T-LC type EQ design, the T-LC Type is best method for revive phono EQ, but the cost is highest.

It uses 12AX7 , WE396A for input stage with TANGO line output , special made T-LC type RIAA EQ , WE417A with TANGO output stage.

Specifications:

Controls
Power Supply : Power On/Of .
Main Unit : Output XLR / RCA , Phase Normal / Inverse , Input MC/MM , MC Gain High/Low , MC Input 1/2 , MC1 impedance select , MC2 impedance select.

Output :  1 pair Main XLR , 1pair Main RCA.

Input : MC1 input , MC2 input , MM input ( all RCA ).

Output Impedance :   600 ohms ( XLR and RCA same ) , 600 ohms minimum load.

Frequency Response: -/+ 0.2dB 20Hz to 20KHz , RIAA equalized  ( -3db at 65khz )

Input Impedance: MC can change by input module, MM is 47K / 100P ( can change by input module ).

Gain: MC low 78dB , MC high 85dB , MM 55dB.

Hum and Noise: 95dB below 10mV input MM.

Phono Overload: MM 180mV.

Tube Compliment : 12AX7 x2 , WE396A x2 , WE417A x2 , 6X4 x2

The Reference grade power amplifier

Completed  7/2009

Owner : Mr Derek Lam ( Hong Kong )

Mr Derek Lam is using AVALON Eldolon Diamond speaker at 250sf .

These pair amplifier are design for he.

The amplifier use 2 pair KT88 pp and TANGO FC-120-5 ouput transformer at each block.

Full balanced design.

Output Power : 
RMS 120W / 32Hz sine wave.

The PX25 P-P power amplifier

Completed 6/2009

Owner : Mr Costa (UK)

The PX25 P-P power amplifier .

Output Power : 
RMS 15W / 30Hz sine wave , Max 20W / 30Hz.

Transformer complement :  
Output Tango XE-60-5P , Interstage Tango NC16 , Choke LC-3-350 , R-Core main transformer.

Owner Mr Costa offer the tubes and tubes sockets .

The LC Type phono stage preamplifier

Completed date: 11/2008

Owner : Mr Chan ( H.K. )

The LC Type is best method for revive phono EQ, but the cost is highest.

This phono can help me go a new LP world.

It use 12AX7 , WE396A for input stage, Western Electric line output , special made LC type RIAA EQ , WE396A output stage.

45dB gain for MM , 47K Input Impedance .

Output Impedance :  650 ohms Balanced , 325 ohm SE Main.
Recommended load:  18K ohm or greater ( Balanced ) , 9K ohm or greater ( SE ). 

Frequency Response:  +/- 0.20dB, 20Hz to 20kHz

We are planning this phono stage to accept order.

Please e-mail to me , if you have question about this phono stage.

• NEW

• PRODUCT

• HISTORY

• Owner System

• PROJECT

• CONTACT US

• BUY ONLINE

• Zorin Audio

• HOME

YS-Audio
Room1308, 13/F,BLK C,.  
Kai Tak FTY BLDG.   
99-101 King Fuk ST,.   
San Po Kong,   KLN,.
Hong Kong
Tel:(852)93440168    
E-mail : info@ys-audio.com 
WhatsApp: 93440168   
facebook : https://www.facebook.com/AudioExperienceYSaudio/