Symphonies Plus Signature

Symphonies Plus-Signature High-Definition Tubes Line Preamplifier (Version 1.8)

Retired Product

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

5687WB for Gain stage.
Hasimoto line output transformer (made in Japan).
Class A .
Volume and Gain uses TKD conductive plastic potentiometer
Input Selector and balanced Controls use SEIDEN (made in Japan)
XLR output and RCA output
External power supply
Double Hasimoto Choke (made in Japan) at HVB+ power supply
Amtrans Golden Black coupling cap
niCrystal OCC (Ohno Continuous Cast) Copper wire and
Gold-plated OFC copper wire for inside interconnect cable.

Volume and Gain uses TKD conductive plastic potentiometer
Input Selector and balanced Controls use SEIDEN (made in Japan)

MultiCap RTX coupling caps

UniCrystal OCC (Ohno Continuous Cast) Copper wire and
Gold-plated OFC copper wire for inside interconnect cable.

Double Hasimoto Choke (made in Japan) at HVB+ power supply.

Hasimoto line output transformer

External power supply.

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$16800

Add extra fee HK$300 for add one pair Balanced (XLR) output.
Add extra fee HK$1800 for exchange the CD input (RCA) to Balanced (XLR) input with Jensen input transformer.
Retired Product

YS-Audio
Room1308, 13/F,BLK C,.
Kai Tak FTY BLDG.
99-101 King Fuk ST,.
San Po Kong,   KLN,.
Hong Kong
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