The Real  Max
  78W + 78W Stereo Valve Tube Power Amplifier

The Real Max is a 78W + 78W Stereo Valve Tube Power Amplifier.
It is a Class AB1 PP 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 Gold Lion KT77 power tubes and Class AB1 UL PP working status to provide 78W adequate output for most of the Hi-End Speakers to ideal performance. Moreover, the high quality output transformer combines with high performance Class AB UL 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. 


The input stage is 12AU7  direct coupling to 12AU7 driver stage  to KT77 power tube , The KT77 work at Class AB1 UL P-P mode to driver Hasimoto output transformer , The Hasimoto HW-100-5 CUT CORE orient high B output transformer has very low Insertion Loss 0.15dB 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.


       hw1005.jpg (364115 個位元組)  hw1005b.jpg (258700 個位元組) The info of Hasimoto HW-100-5 CUT CORE orient high B output transformer.


 realmaxs3.jpg (497545 個位元組)   realmaxs4.jpg (517078 個位元組)   realmaxs2.jpg (467082 個位元組)



Power On/Off

Output and T.H.D :  
1W per channel , 1kHz total harmonic distortion typically 0.13% (0.2% at 20Hz , 0.18% at 20KHz)
78W per channel , 1kHz total harmonic distortion typically 1.2% 

Input :  RCA 

Input Impedance :  100K ohm is  RCA 

Frequency Response:  

1W    20Hz ~ 100KHz ( 20Hz 0dB, 100KHZ -3dB)
95W  20Hz ~ 90kHz (20Hz 0dB , 90kHz -3dB)

Input Sensitivity :  1.7V / 78W       23.5dB Gain ( Test at 8 ohm )

Output Taps: 16 ohm ,8 ohms, 4 ohms.                                                      

Noise: Less than 0.5mV
Damping factor : approximately over 23

Phase Mode : Normal

Tubes Required for each CH:
(4) two matched pair KT77 Power Output , ( 1 ) 12AU7 Driver , ( 1 )12AU7 Input .

Dimension: 433mm x 460mm x 233mm (W x D x H)

Total Weight: 29kg

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

Actual Price: 



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