ADA Depot - A Forum To Support Users of ADA Amplification Gear

Please login or register.

Login with username, password and session length
Advanced search  


Temp "Time Format" issue Fix in Discussions

Pages: [1]   Go Down

Author Topic: Groove Tubes GT12AX7M Mullard  (Read 4435 times)

0 Members and 1 Guest are viewing this topic.

Systematic Chaos

  • Administrator
  • Hero Member
  • ******
  • Offline Offline
  • Posts: 705
  • Blood type: Becks Positive
Groove Tubes GT12AX7M Mullard
« on: Time Format »

Anyone remember these?
They were hyped some 10-12 years ago and IIRC Harley was a massive user and was raving about them.
I always thought they were discontinued....
I went to a music store today and they had a massive stock so I bought 2 (18$ a piece, fairly reasonable) for my also newly acquired Mesa V-Twin.
First impression is really good....detailed and musically rich


  • Administrator
  • Superhero Member
  • ******
  • Offline Offline
  • Posts: 5835
Re: Groove Tubes GT12AX7M Mullard
« Reply #1 on: Time Format »

He SC, no I don't recall them, but Harley (where is he these days  :dunno: ) know his stuff  :thumb-up: So what are they really ?  GT don't make tubes (as you know) just test and rebrand.Shame you don't have an ADA preamp with you to test them in  :facepalm: .  My guess is these (from what you say) would be nice in a MP1.
Studio Rig: Stuff; Live Rig: More Stuff; Guitars: A few


  • Superhero Member
  • ******
  • Offline Offline
  • Posts: 4698
Re: Groove Tubes GT12AX7M Mullard
« Reply #2 on: Time Format »

They were supposed to be a reissue mullard back in 2000, they still sell them but now they are just rebranded Chinese tubes.

Chip Roberts

  • Full Member
  • ***
  • Offline Offline
  • Posts: 188
  • Anything worth doing is worth overdoing.
    • Chip Roberts Official
Re: Groove Tubes GT12AX7M Mullard
« Reply #3 on: Time Format »

I have GT12AX7s in both of my MP1s.  What makes this particular pair different?
Rack of Death:
MP1 v2.01/Roland GP8/Boss NS50/ADA B200s

Boss TU2, Mooer Pitchbox, Boss BF2, Boss CE5, MXR EVH Phase 90, Behringer HB01 Wah/ART X15 Ultrafoot/

Custom 2X12 with WGS Retro 30/HM75
Pages: [1]   Go Up