The Real  Power Amplifier 
MK2



Audio Experience THE REAL Mono Block Power Amplifier is a Class A push-pull triode no negative feedback design power amplifier. It provides sound deep and wide stage, accompanies with reality sound image and a emotions sound presentation.
 
It uses two matched pair of 300B power tubes and Class A push-pull  working status to provide 40W adequate output for most of the Hi-End Speakers to ideal performance. Moreover, the high quality output transformer combines with high performance Class A PP circuit design lead to an extremely low loss, wide sequence sound effect and excellent phases output. 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

The new design input stage is 6DJ8 tube use coupling caps ( use V-Cap CuTF ) to 6C45PI driver tube working at SE mode to driver Hasimoto A-105 Interstage transformer , The interstage transformer driver to two pair 300B power tubes work at Class A P-P mode to driver Hasimoto output transformer , The Hasimoto special grade (HW-60) 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.

The power supply with two separately HVB+ power supply for power output stage and  input driver stage:
One Hasimoto power transformer with Hasimoto choke and highly efficient solid-state regulator for input driver stage.
Other One Hasimoto power transformer with Hasimoto C-core choke and two GZ34 rectifier tubes for power output stage.

THE REAL power amplifier support use 300B or EML 300B-XLS or EML 320B-XLS.
It use 300B is Class A 40W, use EML 300-XLS or EML 320B-XLS is Class A 55W.

 


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The  use highest quality transformers and parts .

 


Specifications

Output and T.H.D :  
1W , 1kHz total harmonic distortion typically 0.17% (30Hz 0.4%, 20KHz 0.5%)
40W 1kHz total harmonic distortion typically 1.2% (rated output)

Input :  RCA x1

Input Impedance :  100K ohm

Frequency Response:  
1W    20Hz ~ 32KHz ( 20Hz 0.2dB, 32KHZ -3dB)
40W  20Hz ~ 32KHz (20Hz -0.35dB , 32kHz -3dB)

Noise: Less than 0.9mV

Input Sensitivity: 0.95V RMS rated output (40W) , 25.5dB gain (test at 8 ohm)
Output Taps: 4 ohm , 8 ohm , 16 ohm.
Damping factor : approximately 32
Tubes Required for each black: 
( 4 )two matched pair 300B Power Output , ( 1 ) 6C45PI Driver , ( 1 )6DJ8 Input , ( 2 ) GZ34 rectifier tubes .

Phase Mode : Normal

Dimension: 455mm x 420mm x 245mm (W x D x H) each

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

Actual Price: 

HK$78000 for with Gold Lion 300B , 40W Class A output.
HK$84300 for with EML 300B , 40W Class A output.
HK$88300 for with EML 300B-XLS or EML 320B-XLS , 55W Class A output.

 

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