Ruby KT-66 tubes as good as Valve Arts?

Get support and show off your MetroAmp JTM 45 kit builds.

Moderator: VelvetGeorge

Post Reply
Blues Rocker
Senior Member
Posts: 96
Joined: Sat Sep 19, 2009 3:03 am
Just the numbers in order: 7

Ruby KT-66 tubes as good as Valve Arts?

Post by Blues Rocker » Wed Jul 07, 2010 2:26 am

I was spec'd with Valve Arts in my JTM-45 kit, but it came with Ruby Tubes. I had and liked the Valuve Arts in my last build.
Can anyone tell me if they've compared the two and what they think of the Ruby's?

Both built by Shuang if I'm not mistaken, but are they essentially the same (quality/tonal) tube?

User avatar
gutpile
Senior Member
Posts: 1370
Joined: Wed Nov 01, 2006 3:47 pm
Just the numbers in order: 13492
Location: Northville, MI

Re: Ruby KT-66 tubes as good as Valve Arts?

Post by gutpile » Wed Jul 07, 2010 10:44 pm

right out of the same factory and machines from what I understand!!!
Metro Clips
Amps:Metro-(JTM45,50w,'69 spec 100w,45/100,100wMV,Bluesbreaker Combo),Orig. 65BFTR
Axes:LP Custom,Am. Strat,Am. Tele,61 SGRI

Blues Rocker
Senior Member
Posts: 96
Joined: Sat Sep 19, 2009 3:03 am
Just the numbers in order: 7

Re: Ruby KT-66 tubes as good as Valve Arts?

Post by Blues Rocker » Thu Jul 08, 2010 1:05 am

Well, now that I've built my second JTM-45 (this one with the Rubys), I can say perhaps prematurely, that I can't tell any difference between the two tonewise. It is possible I could discern that the Valve Arts I had at least sounded a bit smoother, but this could be attributed to that fact that the tubes only have an hour or two of power through them at this point. That could quite conceivably even things up after 20-30 hours of playing.

Post Reply