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Just the test bed..... Zero hiss or hum fantastic sounding amps! I am just blown away. Thank you Peter Daniel! now the hard part chassis' for the blocks.

An externally hosted image should be here but it was not working when we last tested it.

I really like these! does anyone have a source for these heat sinks?
 
Bought a kit from ebay, using lm3875 chips. Stuffed it in an old speaker box. :pLooks porn, but does the job.
 

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ARGA10W

A Really Good Amplifier 10W (?)


Got sick and tired to the noisy computer sound cards,
so I made this...

ARGA10front.jpg


ARGA10back.jpg


Size: H75mm (3"), W200mm (8"), D200mm (8").
Direct answer for the question "how in h...???" you will find from here:
http://www.diyaudio.com/forums/everything-else/13246-way-build-chassis-7.html#post3741821


Amplifier section simulated THD 0.0007% 1kHz/1W/8R
Reality is different because of the PCM to analog signal converted from USB port (@ max.16bit48kHz).
Expected THD around 0.006%, still need to test that though...

Anyhow:
USB DAC/ADC chip is PCM2904 by TI.
Amplifiers are LME49990 (by TI) driving CFP output stage.
Max output power to 8R is 10W and 20W to 4R.

Power supply is regulated 2x18.5V for inputstage,
and 2x16V for outputstage.
Oh, and; its "auto power on/off". Control voltage from USB.
Power light behind volume pot...