In this picture, Andreas Kisser is posing with his ADA MP-1 guitar preamp, third from the bottom in the bottom rack.

In an interview with Seymour Duncan, Alex Skolnick mentioned that he owned an A/DA MP-1 MIDI Programmable Tube Preamp and may have used it on "The New World Order."

Kenny Hickey used the A/DA MP-1 MIDI Programmable Tube Preamp during a tour, as shown in a user-uploaded photo on Tumblr.

Vernon Reid is listed as an ADA MP-1 user in this advertisement.

In an Instagram post by Brandon Ellis (@brandonellisgtr), he can be seen with an A/DA MP-1 MIDI Programmable Tube Preamp in his rack.

Senoue used the A/DA MP-1 during his Kazaly band days in the early 90s, as stated on mixi.

Gear Gods: Whenever I get the chance to talk to bands that were playing years and years ago, I think about how the tones that were available then were so different, and so much more limited. Cynic was trailblazing the ability to jump between so many different genres, which was a lot harder to do back in the early ‘90s. What were you and Jason playing through on the Focus tours? And how difficult was it to achieve the breadth of tones?

Paul Masvidal: Was I running an MP-1? I think I was. Yeah, at that time I was a rack guy. I had a 15-space rackmount. My main preamp was an ADA MP-1 and I used an ADA midi controller. I had a Roland GM-70 guitar synth, which was really cool back then because it had Portamento [pitch glide between notes, instead of set intervals]. You could assign custom midi controllers to the unit on your guitar. It was just really hip for its time. It was very clunky in terms of a big, bulky thing, but what you could do with it was phenomenal. It just had this natural, flawed, organic kind of thing that was very cool at the time.

In an Instagram post, guitarist Scotti Hill discussed his gear from the 1990s, specifically mentioning the A/DA MP-1 MIDI Programmable Tube Preamp. He stated, "The ADA was left over from the first tour. It is not 'THE ADA', which I am proud to say I own." This confirms his use and ownership of the A/DA MP-1 during that period. The post provides a behind-the-scenes look at his rig from the Slave To The Grind tour in 1991.

Vito seen in this ADA MP-1 advertisement.

As mentioned in Blueblood album scorebook, Pata-san used this Pre-amp.

As spotted in Michael's rack case.

Juan Valdivia used the A/DA MP-1 MIDI Programmable Tube Preamp in the studio for the album "Senderos de Traición" and likely during live performances, as documented by Daniel Perez on Dp-foto.