Symphonies Plus-Signature High-Definition Tubes Line Preamplifier (Version 1.5)


 

Symphonies Plus-Signature is Audio Experience Level 4 line preamp , it uses one 5687WB at tube input stage and driver stage to driver with one Hasimoto line output transformer construct Class A for each channel. This design is from our Reference grade preamplifier Reference one MK3 tube line preamplifier 

 

The Symphonies Plus-Signature 's application of a highly efficient solid-state voltage regulator with EZ80 Tube for current regulator and Hasimoto choke in the HVB+ power supply . Also it use the external power supply get highest S/N.

   

Features  

 

spsignewv.jpg (501701 個位元組)
Volume and Gain uses TKD conductive plastic potentiometer
Input Selector and balanced Controls use SEIDEN (made in Japan)

 

spsignewcap1.jpg (475967 個位元組)
Amtrans Golden Black  coupling caps

 

kouzou3.jpg (41838 個位元組)
UniCrystal OCC (Ohno Continuous Cast) Copper wire and 
Gold-plated OFC copper wire  for inside interconnect cable.

 

spsig6.jpg (584277 個位元組)
Double Hasimoto Choke (made in Japan) at HVB+ power supply.

 

spsig7.jpg (518389 個位元組)
Hasimoto line output transformer

 

conpmcs_power.jpg (358182 個位元組) conpmcs_power2.jpg (275756 個位元組)
External power supply.


spsignew4.jpg (580350 個位元組) spsignew3.jpg (466984 個位元組) spsignew2.jpg (424891 個位元組)      
spsignewb1.jpg (534600 個位元組)
spsignewb1.jpg (534600 個位元組) spsignewi1.jpg (437010 個位元組) spsignewi2.jpg (359813 個位元組)

 


Specifications

Controls  
Main unit : Volume, Gain , Input Selector, Output XLR/RCA Selector .

Power supply : Power On/Of

Output :  One pair XLR Main Output  , Two pair RCA Main Output .

Input : 4 pair RCA input .

Output Impedance :  20 ohms
Recommended load:  150 ohm or greater.

Frequency Response:  20Hz ~ 100kHz ( 20Hz 0dB , 100kHz -1dB) at 2V output.

T.H.D : 0.15%  1kHz at 2V

Input Impedance: 10K ohm XLR , 50K ohm RCA.

Gain: 17.5 dB ( XLR and RCA are same gain )

S/N: >110dB (0.045mv)

Channel Balance: <0.1dB(20Hz ~ 20KHz /max output)

Channel Separation: >96dB(2Hz ~ 20KHz)

Phase Mode : Normal

Max Output : 25V

Line-Stage Tubes : 2 pcs 5687WB , 1pcs EZ80.

Dimension:  
main 400mm x 310mm x 150mm (W x D x H) , 
power supply 160mm x 135mm x 60mm (W x D x H).

Weight: Main and power supply total 8.5kg

Power Source: 110-127/220-240V,50/60Hz

 

Actual Price:  HK$16300

 


 

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/