I'm pretty sure it is stock with no mods done at all. Just went over the two ADA Depot noise mods (v1 & v2) and couldn't identify any of the mods on my MP1. This unit is from 1988 and marked as revision D (it also has the 1.38 software) Thanks! On Wed, Oct 10, 2018 at 6:36 PM Darrall Dougherty wrote: > Can you tell if it's had the noise mod done to it? > > Darrall > ------------------------------ > *From:* ada-mp1-bounces@kylheku.com on > behalf of Pilau Tigered > *Sent:* Wednesday, October 10, 2018 8:03 AM > *To:* kaz@kylheku.com; ada-mp1@kylheku.com > *Subject:* Noisy ADA MP-1 > > 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 > >