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I'm a 1st-year hobbyist amp modder and would like to debug noise problems, etc. I assume a very simple O-scope would be sufficient, but my only experience is with using > $10K O-Scopes. Certainly I could get the Tube amp job done with a scope under $200? Any advice or recommendations for make/model? Are there trustworthy websites to purchase refurbs, etc, in the USA?
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While waiting for others to chime in, you might considering reviewing two other MEF posts on Oscopes that I found-
https://music-electronics-forum.com/forum/music-electronics/tools-test-gear/49377-
https://music-electronics-forum.com/...tronics/47188-
And there are probably more.
I have a digital scope and for day to day use, a Tektronix 2205 dual Trace, something I purchased on eBay for < $100. My only complaint is that is does not have attenuation when measuring high AC voltages. But I use a 10:1 probe and have an attenuation box. So I am mainly looking at wave forms and not measuring RMS voltages.It's not just an amp, it's an adventure!
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