Reference One Power MK3  Mono Block Power Amplifier

Audio Experience Reference One MK3 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 two matched pair of Tung-Sol KT150 power tubes and Class AB1 UL PP working status to provide 160W 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 new design input stage is 12AU7  direct coupling to 5687WB driver stage to 6H30 cathode follow driver stage , The driver stage uses  coupling cap to KT150 power tube , The KT150 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 0.15dB 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.

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


refeonepowmk3a.jpg (580060 個位元組) refeonepowmk3b.jpg (506320 個位元組) refeonepowmk3c.jpg (601991 個位元組)  refeonepowmk3e.jpg (24731 個位元組) refeonepowmk3d.jpg (610286 個位元組) refeonepowmk3f.jpg (585912 個位元組) refeonepowmk3g.jpg (569096 個位元組) 

 refeonepowmk3i.jpg (404836 個位元組)  refeonepowmk3j.jpg (485413 個位元組)  refeonepowmk3h.jpg (539936 個位元組)   refeonepowmk3in2.jpg (582187 個位元組)


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


refeonepowmk3tran.jpg (450718 個位元組) The power supply with two separately HVB+ power supply for power output stage and  input driver stage.

refeonepowmk3in1.jpg (416182 個位元組)  M-CAP® Supreme Silver / Gold & Oil coupling cap



Output and T.H.D :  
1W , 1kHz total harmonic distortion typically 0.06% (20Hz 0.07%, 20KHz 0.08%)
160W 1kHz total harmonic distortion typically 1.9%  (30Hz 3%, 20KHz 2.5%)(rated output)

Max: 230W

Input :  RCA and XLR 

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

Frequency Response:  
1W    20Hz ~ 100KHz ( 20Hz 0dB, 100KHZ 0dB)
160W  20Hz ~ 100kHz (20Hz -1dB , 100kHz -2.6dB)

Noise: Less than 0.5mV

Input Sensitivity: 1.8V RMS rated output (160W)      27.8dB Gain ( Test at 8 ohm )  
Output Taps: 4 ohm , 8 ohm , 16 ohm.
Damping factor : approximately 36
Tubes Required for each black: (4) two matched pair KT150 Power Output , ( 1 ) 6H30 Driver, ( 1 ) 5687WB Driver , ( 1 )12AU7 Input .

Phase Mode : Normal

Dimension: 300mm x 438mm x 233mm (W x D x H) each

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


Actual Price: HK$58,800 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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