*Theory and measurement*
*Equipment reviews* (NEW!)
*DIY projects*
- OPENAMP1 - MM phono preamplifier open project
- Audio Buffer
- ZT15VA power supply documentation
- ZT15VA power supply image
*Various audio amplifiers*
- Dispre 2-JFET preamplifier (updated 06/2022)
- ULTIM2 balanced preamplifier (update Jan 2023)
- PA4 Power Amplifier
- PM-A4 Class A Power Amplifier
- A250W4R - DIY 250W/4ohm amplifier
- ACCE3 CFA power amplifier
- UcD180HG module measurements
- PMA-NC252MP 2x250W power amplifier
- NC252MP in bridge-tied BTL mode
- Contact