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 <kaz@kylheku.com> 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
>
>
>
>