The Real KT150Power Amplifier
The input stage is 12AU7 direct coupling to 5687WB driver stage to 6H30 cathode follow driver stage , The driver stage uses AudioCap Theta coupling cap to KT150 power tube , The KT150 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.
The two power supply separately with Hasimoto C-core choke.
The components , NFB value , tube type , circuit all select by listen test.
The use highest quality transformers .
Review by HiFi review.
Output and T.H.D :
Input : RCA and XLR
Input Impedance : 100K ohm is RCA, 10K ohm is XLR .
Noise: Less than 1mV
|Input Sensitivity: 1.35V RMS rated output.|
|Output Taps: 4 ohm , 8 ohm , 16 ohm.|
|Damping factor : approximately 35|
|Tubes Required for each black: (2) one matched pair KT150 Power Output , ( 1 ) 6H30 Driver, ( 1 ) 5687WB Driver , ( 1 )12AU7 Input .|
Phase Mode : Normal
Dimension: 455mm x 350mm x 245mm (W x D x H) each
Power Source: 110-117/220-240V,50/60Hz
Actual Price: HK$49000 one pair.
Room1308, 13/F,BLK C,.
Kai Tak FTY BLDG.
99-101 King Fuk ST,.
San Po Kong, KLN,.
E-mail : firstname.lastname@example.org
facebook : https://www.facebook.com/AudioExperienceYSaudio/