Hi-Fi Headphone Amplifier


Posted on Oct 19, 2012

This design for a headphone amplifier arose after the purchase of commercial equipment with separate pre and power amplifiers without a headphone output. Its advantages are ... * low output impedance to drive several pairs of phones * the active gain stage is, almost, perfectly logarithmic and ... o is independent of the absolute value of the pot o has excellent channel tracking o the O/P noise reduces with gain reduction.


Hi-Fi Headphone Amplifier
Click here to download the full size of the above Circuit.

The intention is to permanently insert the headphone amp between pre and power amps, although it can be used as a stand-alone item. The input relay is operated by auxiliary contacts on the headphone sockets through a transistor driver (with a small delay)




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

PC Remote Control
autodetects baud rate circuit MAX202 and PIC16C54
7-segment display with encoder
Video Stabilizer circuit
Wireless On-Off Switch
Audio Amplifier Op amp
fully automatic emergency light
Transistor Hartley Oscillator



Top