The Real  Power-MB  Mono Block Power Amplifier  



Audio Experience THE REAL Power-MB Mono Block Power Amplifier is a Class A Parallel Single Ended 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 EML 300B-XLS super triode power tubes working at Class A Parallel Single Ended Triode no negative feedback configuration 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 PSE 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/driver stage is new design for Class A Parallel Single Ended , The 6J5 input tube use  M-CAP® Supreme Silver / Gold & Oil coupling cap to EML 30 triode driver tube . The EML 30 driver tube use V-Cap CuTF coupling cap to 6BX7GT cathode follow driver stage, The cathode follow stage is direct coupling to Two EML 300B-XLS power tube , The Two EML 300B-XLS  power tube working at Class A Parallel Single Ended Triode mode to driver Hashimoto special grade CUT CORE orient high B 60W Single Ended output transformer, This Hashimoto special grade CUT CORE orient high B output transformer has very low Insertion Loss 0.25dB 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 Hashimoto power transformer with Hashimoto C-core choke and GZ34 (5AR4) rectifier tubes x 4 for power output stage..
One Hashimoto power transformer with Hashimoto C-core choke and EZ81 rectifier tubes for driver stage..

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. 

 


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Features

 realtranoutput2.jpg (791781 個位元組) Hasimoto special grade CUT CORE orient high B 60W Single Ended output transformer


 Specifications

Output and T.H.D :  

1W per channel , 1kHz total harmonic distortion typically 0.5% (30Hz is 0.75% , 20KHz is 0.5%)
40W per channel , 1kHz total harmonic distortion typically 5.5%  (rated output)

Input :  RCA , XLR

Input Impedance : RCA is 100K ohm, XLR is 50K ohm 

Frequency Response:

Test at 1W  20Hz ~ 60kHz  (20Hz  -1dB, 60KHz  -3dB)
Test at 40W  20Hz ~ 60kHz  (20Hz  -1.5dB, 60KHz  -3dB)

Input Sensitivity :  0.7V / 40W      30dB  gain (Test at 8 ohm )

Output impedance : 4 ohm , 8ohm , 16ohm.

Noise: Less than 1.5mV
Phase Mode : Normal

Construction: Copper and High quality aluminum

Tubes Required for one block : 6J5 x1 , EML30 x1 , 6BX7GT x1, EML300B-XLS x2 , GZ34 x4 , EZ81 x1

Dimension: 455mm x 438mm x 300mm (W x D x H)

Weight: 33.8kg ( one block )

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

Actual Price: 

Standard Version HK$88,800 with EML 300B-XLS 40W Class A output.

HK$86,800 with EML 300B  20W Class A output.

HK$95,800 with EML 1605 50W 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 
WhatsApp: 93440168   
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