The No.1 Website for Pro Audio
Class A Tube mic pre for under $400, with Jenson X
Old 17th May 2003
  #1
Lives for gear
Class A Tube mic pre for under $400, with Jenson X

OK it isn't new but I thought I'd pass on my new find. Peavey has discontinued there TMP-1 single channel, class A all tube mic pre (tube on both input and output stage) high voltage. So I bought one for $160 from Medley Music in Phili. Called up Audio Upgrades and sent him the schematics I got from Peavey. He said the mic pre design is similar to the VMP2 and he could make it sound better. So I sent it to him and for $225 he put in Jenson input transformer and upgraded any caps with the high grade stuff. The results is one increadible (clean sounding) tube mic pre. The one negative is that the phantom is only 24 vt which means you have to crank up the gain for phantom powered mics and you can get a little noise (although not excessive by any means). Anyways, I use a tube mic which has it's own power supply so it doesn't matter to me. The pre holds it's own against other great mic pre's I've tried it beside GR NV, Vintech and others I've tried it along with. Has more high end then those models and is slightly cleaner but has a nice tube sweetness.
Old 17th May 2003
  #2
Moderator
 
Tim Farrant's Avatar
 

Sounds like you got a bargin there Coldsnow !

It's amazing the difference capacitors can make to the sound of electronics. Whilst some say your better off without them, unfortunately some designs require their use.

In our MA2.2 mic preamp we use WIMA brand coupling caps and they cost us an arm and a leg !! so we decided to try cheaper caps from Taiwan and China. We auditioned about 5 different brands against the WIMA's and found nothing that sounded as good. Even though we could not measure any difference, most of the cheaper caps lacked bottom end and made the MA2.2 sound harsh. Very interesting experiment, but we do continue with the WIMA's...

Cheers
Tim
Buzz Audio
Old 17th May 2003
  #3
Lives for gear
Yea, you can definetly hear a bid difference in this mic pre, I'm sure some of it has to do with the replacing the transformer with a Jenson, but I'll bet the caps had a lot to do with it as well, particularly when using the transformerless output (the TMP has both). But overall, something I've noticed is when you add some high end eq to a recorded vocal, tracks recorded on the lower cost units (I'm generalizing of course not all I'm sure) tend to break up and not sound good, where tracks recorded on a higher end mic pre tend to get airy. So that is always one of my tests when trying out a new mic pre (of course it depends on how much high end the mic pre has to begin with as well).
Post Reply

Welcome to the Gearslutz Pro Audio Community!

Registration benefits include:
  • The ability to reply to and create new discussions
  • Access to members-only giveaways & competitions
  • Interact with VIP industry experts in our guest Q&As
  • Access to members-only sub forum discussions
  • Access to members-only Chat Room
  • Get INSTANT ACCESS to the world's best private pro audio Classifieds for only USD $20/year
  • Promote your eBay auctions and Reverb.com listings for free
  • Remove this message!
You need an account to post a reply. Create a username and password below and an account will be created and your post entered.


 
 
Slide to join now Processing…
Thread Tools
Search this Thread
Search this Thread:

Advanced Search
Forum Jump
Forum Jump