I finally wrapped up my MR80 refurb today. The last item was replacing 4 ancient opamps (2x LM201 and 2x LF356) in the audio path with more modern and quiet Burr Brown/TI OPA132's.
The background noise/hiss is now completely gone. There's a few compensation caps that need to be removed to accommodate this swap so PM me if you're interested. This was an awesome upgrade!
Last edited by Cohibaman; 04-06-2016 at 11:48 AM.
|