The Real  XL Power Amplifier  

Audio Experience THE REAL XL Mono Block Power Amplifier 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 three matched pair of Gold Lion KT77 power tubes and Class AB1 UL PP working status to provide 120W adequate output for most of the Hi-End Speakers to ideal performance. Moreover, the high quality output transformer combines with high performance Class AB1 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 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 three pair KT77 power tubes work at Class AB1 UL P-P mode to driver Hasimoto output transformer , The Hasimoto special grade CUT CORE orient high B output transformer has very low Insertion Loss 0.13dB 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 1.3dB 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 for power output stage.

The components ,  NFB value , tube type , circuit all select by listen test.

realxl2.jpg (699494 個位元組) realxl5.jpg (36396 個位元組)

real3.jpg (449722 個位元組) realxl6.jpg (552506 個位元組) realxl9.jpg (519027 個位元組)      

realxl10.jpg (510650 個位元組)  realxl12.jpg (478582 個位元組) realxlin1.jpg (612171 個位元組)   


The  use highest quality transformers and parts .

realxlout.jpg (707814 個位元組) Hasimoto special grade CUT CORE orient high B output transformer.

A-105.jpg (466866 個位元組) realxl7.jpg (630165 個位元組) Hasimoto A-105 Interstage Transformer to driver power tube.


realxl8.jpg (567626 個位元組) realxl11.jpg (603296 個位元組) The power supply with two separately HVB+ power supply for power output stage and  input driver stage

realxlin3.jpg (725842 個位元組) Input driver stage power supply with highly efficient solid-state regulator. 

realxlin2.jpg (435811 個位元組) Coupling cap use V-Cap CuTF



Output and T.H.D :  
1W , 1kHz total harmonic distortion typically 0.13% (20Hz 0.5%, 20KHz 0.3%)
120W 1kHz total harmonic distortion typically 1.5%  (Rated output)

Max: 200W

Input :  RCA and XLR 

Input Impedance :  100K ohm is RCA, 10K ohm is XLR .

Frequency Response:  
1W    20Hz ~ 98KHz ( 20Hz 0dB, 98KHZ -3dB)
120W  20Hz ~ 90kHz (20Hz -0.7dB , 90kHz -3dB)

Noise: Less than 0.5mV

Input Sensitivity: 1.55V RMS rated output.
Output Taps: 4 ohm , 8 ohm , 16 ohm.
Damping factor : approximately 40
Tubes Required for each black: (6) Three matched pair KT77 Power Output , ( 1 ) 6C45PI Driver, ( 1 ) 6DJ8 Input .

Phase Mode : Normal

Dimension: 455mm x 410mm x 245mm (W x D x H) each

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

Actual Price: HK$68000 one pair.


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