Good tube mic pres... 1st post!

Discussion in 'Preamps / Channel Strips' started by snooch, Aug 21, 2006.

  • AT5047

    The New AT5047 Premier Studio Microphone Purity Transformed

  1. snooch

    snooch Guest

    I don' t mean any cheap starved plate jobs.

    What do you expect from a GOOD tube mic pre?

    What do you want to hear from it when you audition it?

    What features are must haves?

  2. pr0gr4m

    pr0gr4m Well-Known Member

    Feb 9, 2005
    South Florida
    Home Page:
    Good sound, low noise, high gain.
    When I want a transparent pre, I want to hear how close the pre sounds to the sound I hear from the mic'd source.
    Other times I may want to hear how it enhances (colors) that sound. It depends on the source and what my needs are.
    I also like to compare mic/pre pairs. I'll take one mic and listen to it through different preamps and see what I like best.
    Since I don't have a great knowledge of the inner-workings of a preamp, like their transformers, tubes and whatnot, these are the things I look for, in no particular order...

    Low Noise
    High Headroom
    Lotsa Gain
    Phantom Power - check that voltage!
    I like a DI input on them too

    There are many, Many, MANY posts on this forum about mic preamps. Lots of good info in them too.
  3. snooch

    snooch Guest

    thanks pr0gr4m, appreciate the input.
  4. chrispick

    chrispick Guest

    To add to program's post: I'd look for additional functionality like impedance switching, pad switching and Hi-Z input.
  5. snooch

    snooch Guest

    does anyone use/need 1/4" outs and should it be balanced or unbalanced?

    thanks chris
  6. RemyRAD

    RemyRAD Member

    Sep 26, 2005
    Generally with most tube circuits, on good preamplifier's and not your bargain variety, the outputs are transformer balanced. The outputs are generally on "XLR" connectors, barrier blocks or even 1/4" TRS "tip ring sleeve" balanced outputs. Of course, one can create a transformerless output with a hybrid device with solid-state components for the output. I don't like depleted plate preamps either. A plate voltage of at least 250 volts DC is usually necessary. Any less and its pooped out.

    No plate at almost 51 but I am feeling rather depleted.
    Ms. Remy Ann David
  7. moonbaby

    moonbaby Mmmmmm Well-Known Member

    Feb 23, 2005
    A polarity reverse switch (sometimes erroneously referred to as a "phase reverse" switch) comes in darned handy at times...
  8. snooch

    snooch Guest

    Thanks for responding. Very helpful.
    Cheers. :D
  9. dementedchord

    dementedchord Well-Known Member

    May 11, 2006
    $ .02

    i'm starting to become alarmed at how often i'm agreeing with remy....

    BTW Question... how do i thank you for the spanking the other day????

    glad to hear your already aware of starved plates... if you like most of us are concerned with budget i would recommend checking into the DBX 368
    around 200V on the plates not as coloured as some ... i even use it for my live keyboard rig...

    remy answer: $50 just like downtown...

Share This Page