Tr1 and Tr2 transistors functions as direct coupled voltage amplifiers. R6 resistor, D1 and D2 diodes determine the standby current of complement driver stage (Tr3/Tr4) and output stage (Tr5/Tr6). C3, ...
Now available in the UK is the flagship stereo amplifier from US manufacturer conrad-johnson, the ARTsa. An all-valve design, delivering 140W per channel, it sells for £18,500. The ARTsa is based on ...
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