Small and simple USB audio amp anyone?

**JC-S60** · 11-15-2007, 08:03 AM

Originally Posted by pokki

If you're happy to desolder the CM chip or build uppon an existing solution, I can help you source a complete CM106 USB soundcard for sub $25 USD.

We are asking our assembly company if they dan set up a robot to desolder the chip, maybe there is some light at the end of the tunnel here...thanks!

Joachim

**pokki** · 11-16-2007, 01:29 AM

Fom my limited knowledge of PCB boards the CM chip appears to be surface mounted not through hole - just in case that effects your abilities to de-solder them.

I'll post a photo of my sample board tomorrow.

**pokki** · 11-18-2007, 02:28 PM

**Nerd2** · 11-18-2007, 03:45 PM

Just another +1 to say I think this is a great idea. Head-unit replacement is what it's all about, forget big amps and posh optical soundcards - most people will be happy with something the level of their HU (or slightly better). Great idea.

**peijffertje** · 11-19-2007, 04:17 AM

Same here. I hope you'll be getting this on the market really soon

**JC-S60** · 11-19-2007, 06:01 AM

[QUOTE=pokki;1143238]...[QUOTE]

Thanks! We'll look into it...

Joachim

**ThunderStick** · 11-19-2007, 09:26 AM

Im all in for this idea. Since mitch's developement of his HD radio cable, this would incline me to go with out a head unit. Something I wanted to do for years. The only thing stopping me before was the cost of the amp, wiring and accessories needed for the amp. And of course a good radio tuner.
With a "USB amp" this would help to get me over the final hurdle.

**JC-S60** · 11-22-2007, 06:14 PM

Originally Posted by ThunderStick

Im all in for this idea. Since mitch's developement of his HD radio cable, this would incline me to go with out a head unit. Something I wanted to do for years. The only thing stopping me before was the cost of the amp, wiring and accessories needed for the amp. And of course a good radio tuner.
With a "USB amp" this would help to get me over the final hurdle.

Thanks for your interest!

Tomorrow I'm taking the first production PCB to the housing guys...another 3 weeks I reckon...

Joachim

**JC-S60** · 11-23-2007, 04:15 PM

Preview of the PCB - ATTENTION: Optical IN/OUT will not be on the final product, only available as an option for large orders!

Connections:

- Stereo line-input (goes to the PC as recording channel - ideal for AM/FM, Sirius, DAB, XM... modules with analog output so you can use the equalizer and timeshifting/recording of the PC)
- 2x Stereo line-output (front and rear - fader on-board with trimpots)
- USB type B connector to PC (Audio and control)
- Molex with
- 4x speaker output - 4x40w (front and rear - fader on-board with trimpots)
- Remote power input (Acc wire)
- 12v power input

Optional: standard ISO wiring harnass for power, remote and speakers: really plug and play!

Joachim