Pyle PT8000CH Multichannel Amplifier Teardown

[amirm]

Amir, thank you for this. A question to you (and the membership) : when you were in there inspecting and looking around, what did you think of the build quality? How confident are you that this amp would last five years under 'normal' operating conditions?

Hard to predict given the no-name caps, and transistors with no branding. Repair would be hard too given lack of marking on the transistors.

Cooling is good though. So I would guess 3 to 5 years of life.

 

[HarmonicTHD]

Wow. Just the two toroidal transformers come close (2/3 maybe) to the sales price if one would buy them individually. Plus case plus heatsinks and connectors. If one would need cheap parts for a diy amp project buy this amp and take out the amp modules and put in your own. Amazing

 

[dfuller]

[Goes directly into strategies for lowering noise and distortion...]

Interesting how many of the resistors are carbon film instead metal film. I wonder of any of those e-caps are DC coupled and could be replaced with poly? I also wonder what the spec on the output transistors is? For maybe $100, this could possibly be turned into a contender. Too bad I don't have an Audio Precision on my bench. I would be very tempted...

On top of this... I think just increasing global feedback by a few dB would drop distortion considerably. I agree with you re: noise, looks to be mostly random so probably resistor noise and maybe not particularly low noise discretes.