• 2x100W - 4 ohm, 2x60W - 8 ohm
• Audiophile sound quality, < 0,015% TDH+N at 2x50 W RMS,8 ohm
• Line level analog audio inputs
• High efficiency 85-90%; small heat sink and small transformer
• High power supply power rejection ratio
• Click-less on-off
• Over / under voltage turn off
• Over current protection
• Temperature overload protection

Sébastien describes his work:

"The box comes from RadioSpares with part number 517-3260 and cost around 17€. It was machined by a friend and painted by a car painter for 15€.

Connectors (ALPS 50k) and knob are from china (by eBay).

Inside, I use a 2x22V 250VA transformer, 2x 35A bridge and 2x 10mF/40V capacitor.

I put some wire on the transformer to get the +5V. I use a DIL4 bridge, a 2,2mF/16V capacitor, an 7805 with 100nF SMD capacitor on output.

All connectors comes from MOLEX.

Earth is connected to box by inductor VK200 and I use a 60 ohms CTN on primary transformer to limit start up current to 4A. When it's warm , CTN is around 0,1 ohms.

TA2022 is insulated by 3M Kapton. It's the same orange scotch we can see on the transformer.

A red LED is connected between +30V and -30V."

More Featured Customer Projects here

If you have an interesting project for this page, let us know, under contact us and we may publish it as a coming "featured customer project".

There are also pictures of many interesting customer projects under The Photo Gallery in the forum