Solid State Guitar Amp Forum | DIY Guitar Amplifiers
Solid State Amplifiers => Amplifier Discussion => Topic started by: DreamSeller on May 25, 2006, 10:11:41 AM
I recently brought a 10 watt practice amp from my guitar teacher for around AUD $50. The sound is alright but when you turn it up the gain is so unbeleiveably fuzzy that I am actually thinking of making it into a noise maker stompbox.
Never tried to reverse engineer before but this has given me the inscentive to try.
If I figure it out I will post the schematic.
-Dream
Is it solid state or tube? What brand is it?
It is solid state and the only markings it has on it is GA-12. It has a 3 knob tonestack a gain and volume pot a phones output and high and low inputs.
Sorry I was so brief in my first post.
-Dream
Did a quick google search and all I came up with is a stedman DI box that is a GA-12.
http://www.amptone.com/images/ga12_hir.jpg
Nah, Not it. I will take pics as soon as I can
-Dream
Well I kinda figured it wasn't it since you said it was an amp, not a DI box :P
OK opened it up and it uses a tda2003 car radio amp chip and an other IC that im yet to identify.
If anyone wants to try and reverse engineer it tell me and I will take some photos.
-Dream
I built a small bass amp using a TDA2003 kit from vellman or whatever and hated it. NO clean headroom.