YSA6C33C  18W+18W Integrated Stereo Valve Tube Amplifier

Audio Experience YSA6C33C  is a 18W + 18W Integrated Stereo Valve Tube Amplifier.
   The amplifier use one 6C33C power tubes work at SET Single Ended Triode configuration status to provide Class A 18W adequate output . Moreover, It use the high quality output transformer ( Hasimoto . made in Japan).

   The YSA6C33C  with high / low gain selector,  high gain for Integrated amplifier model, low gain for power amplifier model.

   The line preamp stage use 6SJ7 tube , The driver stage use 6SN7 to driver 6C33C power tube . The 6C33C tube work at SET Single Ended Triode mode to driver Hasimoto H-20-600 high quality output transformer , The Hasimoto H-20-600 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. 




 h_20_600.jpg (725025 個位元組) Hasimoto H-20-600 Output Transformer

Review by HiFi review no:366 , p194~p196

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Output and T.H.D :  

Low gain:
1W per channel , 1kHz total harmonic distortion typically 0.7% 
18W per channel , 1kHz total harmonic distortion typically 2.5%  (rated output)

High gain:
1W per channel , 1kHz total harmonic distortion typically 1.1% 
18W per channel , 1kHz total harmonic distortion typically 4.5%  (rated output)

Input :  4 pair RCA 

Controls : Volume, Input selector , input gain , main high/low gain selector,  Power On/Of

Input Impedance : RCA is 100K ohm

Frequency Response:

Low gain:
Test at 1W  20Hz ~ 80kHz  (20Hz -0dB, 20kHz -0dB, 80KHz -3dB)
Test at 18W  20Hz ~ 80kHz  (20Hz -3dB, 20kHz -0dB, 80KHz -3dB)

High gain:
Test at 1W  20Hz ~ 43kHz  (20Hz -0dB, 20kHz -0dB, 43KHz -3dB)
Test at 18W  20Hz ~ 43kHz  (20Hz -3dB, 20kHz -0dB, 43KHz -3dB)

Input Sensitivity :  
volume and input gain at MAX ,  
Low gain 0.6V / 18W (rated output)
High gain 0.33V / 18W (rated output)

Output impedance : 4 ohm , 8ohm , 16ohm

Noise: Less than 1mV
Phase Mode : Normal

Construction: Copper and High quality aluminum

Tubes Required: 6SJ7WA x2 , 6SN7 x2 , 6C33C x 2

Dimension: 400mm x 300mm x 210mm (W x D x H)

Total Weight: 17kg

Power Source: 110-117/220 or 240V,50/60Hz

 Actual Price: HK$20,000


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