The listening tests of the single ended class A output stage of the phono preamplifer were very promising, so I did not test different circuit variations of the line level amplifier. I just copied the circuit of the second stage of the phono preamplifier and did the following changes. Link
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10-14W Class A amplifier with [...]
If friend want Bipolar Transistor power Amplifier Circuit. , In model HIFI OCL 100W RMS. I sizes think this circuit may is the one choice interesting , use Transistor the important be BD317 and BD318 unless have transistor number BD139,BD140,BC556 then seek buy easy , when see power supply use voltage source 35V just then [...]
This is very basic amplifier circuit,so I use IC digital Cmos 4011 quad NAND gate.
It is to give equal to 10x linear amplifier.
The resistor R1 = 1M ohm , R2 = 10M ohm.
This circuit can not output speaker because it is very low power amplifier.
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LM1875 Channel Stereo Power Amplifier 20 Watt
00W Mosfet [...]
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