Still there, Mr. Kaz? :) On Fri, Oct 12, 2018, 18:27 Pilau Tigered wrote: > Hey Kaz, good to hear from you. > > So are you saying that level of noise is just how this device is? > > Modding/upgrading the MP-1 is definitely worth it! In that note, do you > think you could maybe share what exactly you changed with the opamps? > > On Fri, Oct 12, 2018, 18:23 Kaz Kylheku wrote: > >> Stock ADA MP-1's are noisy. In your Youtube video, nothing strikes me as >> odd, other than the buzz when the audio interface is used. (I concur that >> it is probably a ground loop.) >> >> I haven't done anything to my MP-1 in a bunch of years now; just enjoying >> it daily! >> >> When I ripped out all the audio-passing op-amps and replaced them with >> better ones, it really cleaned up. I couldn't believe I could just put down >> the guitar on a stand, mute the strings and walk away. >> >> Those ADA people created a lot of future work for hobbyists by creating a >> great design, and then stuffing it with some crappy components. But for >> some of us it is worth it. >> >> On 2018-10-10 06:03, Pilau Tigered wrote: >> >> Hello Kaz and the ADA MP-1 mailing list! >> >> I have recently acquired a used ADA MP-1. The unit is rather noisy and it >> has a faulty front input plug. These issue led to hours of research and >> discovery, including finding out about this mailing list and Mr. Kylheku >> (among other leading figures in the mp1 technical community) >> >> ** I'd love it if someone could help me debug and locate the source of >> the issue ** >> >> I have also put together a list of information and >> mods/upgrades/refurbishing instructions and other technical resources for >> the ADA MP-1: https://tinyurl.com/ada-mp1-refurbish-upgrades, feel free >> to check it out >> >> Pilau >> >> >> >> >