Any mini Bias tremolo or harmonic trem pedals?

Discussion in 'Effects, Pedals, Strings & Things' started by gillibi, May 5, 2017.

  1. gillibi

    gillibi Supporting Member

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    I have a Trelicopter that I really dig, was wondering if anyone makes a bias style tremolo mini pedal? Boutique, mass produced, or diy builder....doesn't matter to me, just must be a mini.

    Thanks
     
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  2. dave999z

    dave999z Member

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  3. gillibi

    gillibi Supporting Member

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    That
    That's an opto trem unfortunately, like my Trelicopter
     
  4. dave999z

    dave999z Member

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    Guess I don't know what a bias trem is. I assumed it was one with a bias knob, but obviously that's wrong.
     
  5. GA20T

    GA20T Member

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    I'm also looking forward to a time when good mini harmonic trems become available.

    Bias-vary, like that of a 6g2 Princeton. It's a smooth wave/wiggle, as opposed to the chop or stutter found on a Twin Reverb/Super Reverb/BF Bandmaster etc.
     
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  6. Drak

    Drak Supporting Member

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  7. gillibi

    gillibi Supporting Member

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  8. gillibi

    gillibi Supporting Member

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  9. 9520575

    9520575 Member

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    I'm confused as to what you're looking for. A harmonic tremolo, splits the signal. One goes through a hi pass filter and the other a low pass filter. Then the amplitude of signals is modulated opposite one another. The sound is close to a phaser.

    While a bias tremolo, varies the bias of a tube. Causing an amplitude modulation. The "shape" of that modulation is replicated quite nicely by a triangle wave of a tremolo pedal, whether it be optical controlled or not. Seems to be moot as to how the amplitude modulation is generated.
     
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  10. bgmacaw

    bgmacaw Member

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    I've noticed 2 that seem a bit different than the other Chinese ones, the Donner Ripple and the Mooer Varimolo. I think the Varimolo is digital modeler. The Ripple is probably optical since it's most likely based on the Hotone Trem circuit.
     
  11. pickdropper

    pickdropper Supporting Member

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    Are you familiar with the EA term circuit? It's not optical and does more of the sine wave type term than the square choppy thing. It's more like an old Fender amp. It can be stuffed in a mini enclosure as well. Here's one I did:

    [​IMG]
    [​IMG]

    There's an LFO bypass switch on it so that it can be used as a boost (or a cut) instead of the trem.
     
  12. gillibi

    gillibi Supporting Member

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    Mostly looking for a bias tremolo, but open to a harmonic as well. Want something different than the opto I'm using now
     
  13. Tri Pedal Reviews

    Tri Pedal Reviews Member

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    Most optical trems in amplifiers I believe are either Triangle wave or square wave, or somewhere in between there. They are usually described as choppier than bias trem. I believe most people describe bias modulated as smoother, indicating sine wave.

    However just because a tremolo pedal is optical, doesn't mean they are emulating optical tremolo in amplifiers, you can have optical tremolos that allow you to control wave shapes throughout the spectrum which give much greater options and range than amplifiers.

    Most "bias trem" pedals tout themselves as being bias trems. If there is no mention of what type it is, I've found it's usually optical.

    I haven't heard of or seen any mini pedals that tout themselves as Bias or Harmonic. But I haven't looked real closely at them either.

    A couple of full sized options in either category for reference

    Harmonic
    Earthquaker Nightwire
    Coldcut Harmonic Trem V2
    Catalinbread Pareidolia
    Cardinal Harmonic Tremolo

    Bias
    Swamp Thang
    Basic Audio Throbby
    Mr Black Deluxe +
    Kingsly Bard (Actually has tubes)
     
    Last edited: Aug 5, 2017
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  14. ChampReverb

    ChampReverb Silver Supporting Member

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    The BYOC tremolo sounds great and is based on the EA. I built one years ago and put it on a shelf. Recently I tried it and liked it so much that it's on my board ...along with a Rockett Revolver (pitch shifting tremolo).

    -bEn r.
     
  15. SeicheNZ

    SeicheNZ Member

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    try
    • vico vibe clone (bias trem)
    • 1776 cardinal tremolo (harmonic trem)
     
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  16. midwayfair

    midwayfair Member

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    I can't quiiiiite get the new Cardinal in a 1590A ... though I haven't tried with 1/8W resistors. I did manage to get a variant of V1 in a 1590A but it had some limitations.
     
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  17. misa

    misa Silver Supporting Member

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    I never found out whether the Lovepedal Babyface was opto or not, but it has a nice, smooth term sound that I liked (and I usually dislike opto style terms). For a mini pedal, I'd recommend looking there.
     
  18. tbader

    tbader Member

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    One could ditch his or her reverb pedal and get a Flint. The reverbs and tremolos, though digital, are fantastic.

    The physical size is similar to two 1590A boxes + cable ends.
     
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  19. martijn

    martijn Member

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    Has a company released a harmonic tremolo in a mini pedal form factor yet?
     
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  20. Blue Bee

    Blue Bee Member

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    I really like the options on this one. Are they available for purchase?
     

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