1. Please take 30 seconds to register your free account to post, make friends, earn reward points at our store, and more!  
     
    TalkBass.com has been uniting the low end since 1998.  Join us! :)

Mesa 400+ Pre-tubes??

Discussion in 'Amps and Cabs [BG]' started by thirdeye, Dec 10, 2002.


  1. I'm wondering if anyone can help me select some preamp tubes for my 400+,any experience with different makes of 12ax7s',and the different charactaristics of each???

    I'm after a very warm tone with clean trebley highs and grunting high mids.I find the original mesa tubes (2 yrs old) have a very harsh treble attack (I play with a pick) almost like a slight treble boost overdrives the tubes too much,but if I back off on the treble I loose the high end crispness I'm after.

    thanks.

    p.s. the poweramp tubes are about 4 months old.
     
  2. I don't think changing tubes will re-voice your pre-amp that much. What you are trying to do is to slightly overdrive the high-mids and leave the treble clean. I don't how to get selective overdrive without bi-amping of some sort... :confused:
     
  3. Electro Harmonics
    12ax7eh
    tubestore or lord valve
     
  4. The stock Mesa tubes should already be EH's. I like 'em.