Hardware hacks, microcontrollers and audio.
Car amplifier (power inverter+bridged amplifier).
Car subwoofer with a 15" speaker.
Cooling fan controller for PC. More info.
High-quality condenser microphone preamp.
Audio amplifier built by using the Symasym schematics.
My second preamplifier. Built in 2011. Used every day.
A subwoofer amplifier based on the UCD400 module.
Velleman K8055-based interface to PC.
Audio amplifier built by using the Leach schematics.
Experimental class D amplifier built in 2006.
Handful of Soviet-era electronic parts.
Experimental class D amplifier.
A 2x50W audio amplifier.
12V to 2x40V inverter to power an amplifier inside a car.
Partially restored Soviet amplifier U-7111.
A 300W subwoofer amplifier.
My first preamplifier. Built into a case of an old cassette deck. Done in 2003.
Heavy-duty party amplifier built in 2002.