Symphonies -V2R  High-Definition Tubes Line Preamplifier 

Retired Product

The Symphonies - V2R , ( With Remote Control Version ) line level preamplifier designed by Mr. Chui Sat Sung, 
each component is carefully built using "point-to-point" hand wiring and select grade components. 
“Alps” volume pots, “R” core power transformers, “Dale” resistors, “Wima” & “Phillips” coupling capacitors, 
and high quality copper internal wiring, create a perfect blend of superb electronic engineering. 
The Symphonies, pure tube preamplifier reveals crystal clear details, eloquent musicality, with absolute neutrality. 
(3) 12AX7A vacuum tubes are used in the stage and a one 6X4 for the power supply.



 Huge dynamic range, both the beautiful tone color and wonderful rhythm , 
ultra linear circuit of the line stage designed for the DVD - Audio and SACD source in the New Century.
uncanny natural flowing heart-stirring sound that matches any other ultra-Fi products on the market .
The Line stage made by Hand built " point to point " on YS-Audio factory.
"point to point" has become more focused, the soundstage is
Hand built by " point to point ' is very high cost of manufacture !
The installation of the tubes line stage is special designed , it can prevent RF interfere and vibrate interfere,
It has become very clean soundstage and saw the musical instrument hang up in the air.

The 6X4 Tube rectification opens up the soundstage and allows the music to "bloom". 
The melody flows naturally, like a river. In contrast, solid state rectifiers emit 
electromagnetic pulses that resonate throughout the audio circuit and add an 
electronic haze that can be perceived as a highly unnatural noise or grain. 
The unnaturalness of the solid state rectifier's turn on/turn off cycle creates a choppy, 
edgy feeling that over-emphasizes the leading edge of transients at the expense of a 
harmonic completeness and does not allow the individual notes to rise and decay naturally.

True listenability…hear it for yourself.

s2r2.jpg (61343 個位元組) Full black Ver. 

Some customer and Audio Critic feedback 

“Audiophiles around the world are about to discover true high-end performance without compromise…”

“At first listen, I knew this preamp was something special…”

“The instruments seemed to float within the soundstage, absolute musicality!”

spamp2.jpg (95175 個位元組)     spamp3.jpg (63352 個位元組)    

See Customer Feedback Enter There


Controls : Gain , Input Selector , Balance , Power On/Of

Output :  Main RCA x2 pair , REC RCA x1 pair

Input :  RCA x4 pair 

Output Impedance :   600ohm at 1K Hz( all main output)
Recommended load:  20K ohm or greater

Frequency Response:  15Hz ~ 65KHz(-0.5dB)

T.H.D : <0.04% (20Hz ~ 20KHz /2V)

Input Impedance: 50K ohm

Gain: 12dB

S/N: >93dB

Channel Balance: < 0.7dB(20Hz ~ 10KHz /max output)

Channel Separation: >65dB(2Hz ~ 20KHz)

Phase Mode : Normal

Max Output : 20V

Line-Stage Tubes : 12AX7A x3

Power Supply : 6X4

Dimension: 400mm x 310mm x 80mm (W x D x H)

Weight: 4.5kg

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

Retired Product


Room1308, 13/F,BLK C,.  
Kai Tak FTY BLDG.   
99-101 King Fuk ST,.   
San Po Kong,   KLN,.
Hong Kong
E-mail : 
WhatsApp: 93440168   
facebook :