Tags » Amplifier

Fender Champion 100 amplifier - review

I play in a band. My son, Harry, plays in a band. By default we own a lot of amps and guitars. Our collection includes a couple of beautiful valve amps: a… 692 more words


BJT amplifier

This article is an instructional exercise to outline a BJT speaker circuit. 1,693 more words

Headphone Protection V2.1

Today I would like to show You my protection circuit.

This circuit is designed to do few functions:

– delay at startup – few seconds set by RC… 43 more words

Audio Tunning

TPA6120 + LT1028 for HeadFun

Next amplifier for HeadFun is based on TPA6120 TI current feedback, high current, operational amplifier + Linear LT1028 for input buffer/voltage amplification. TPA6120 needs input buffer on non-inverting input due to ~6uA of current sourcing from this pin.

Audio Tunning

How To Tell If You're Installing Foil Capacitors Backwards

It only takes one mistake to realize electrolytic capacitors have a polarity, but if you’re working with old tube gear, tube amps, or any old equipment with those old orange dip, brown dip, or green dip foil capacitors… 234 more words

Classic Hacks

HDP01 Discrete for HeadFun

Design based on corrected and improved schematic originaly posted by Knut Harald Nygaard on his home page:


but now project is unavailable, maybe cause of instability of original design. 136 more words