Another great, cheapish pedal for bass: EHX Hot Tubes

Discussion in 'Effects [BG]' started by jumblemind, Dec 30, 2014.

  1. jumblemind

    jumblemind I also answer to Bryan Supporting Member

    Aug 27, 2011
    Knoxville
    For anyone looking for a low-cost way to make a sterile or hifi amp (or bass) sound warm and tubey, check this thing out. At low gain settings with the tone control turned off, the EHX Hot Tubes (nano) does a very convincing tube sound, rolling off the highs and adding a bit of compression without any real noticeable low end loss. Instant old-school "warmth" to any rig.

    I've seen just a little bit of talk of it here and there, particularly from Gregmon over in the Pedal Breeders thread, but I figured I'd dedicate a post to it for those interested. I read Greg compare it favorably to his Blue Tube, and would agree with that very much. You even get some nice harmonic content that often only comes with a real tube pedal. As he points out, the EQ control is nice on the Blue Tube, but the compact form factor and 9v of the Hot Tubes is a win.

    As on overdrive, it's just kind of okay. I would never recommend it as a "tube growl" pedal. With the drive dialed up it is very similar to what I've heard from the EQD Speaker Cranker. I'm not a huge fan of that farty way-overdriven tube thing, but if you like it, this one has it. Mostly I think it's a great, inexpensive way to add the old school tube sound to your arsenal.
     
    Last edited: Feb 28, 2015
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  2. zapped777

    zapped777

    Jul 6, 2011
    man EHX is killing it lately,,,, wish they could get the muff right though,,.... they did invent that one,,,, right??
     
  3. jumblemind

    jumblemind I also answer to Bryan Supporting Member

    Aug 27, 2011
    Knoxville
    Haha, no kidding. I think their best muffs were happening without a lot of their involvement.

    I just wish they could get their knobs right.
     
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  4. +1 for the Hot Tubes. I picked it up recently. The gain is not bad at all... kind of typical CMOS dirt similar to a B3k or Red Llama at low levels.
     
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  5. jumblemind

    jumblemind I also answer to Bryan Supporting Member

    Aug 27, 2011
    Knoxville
    Got around to recording a sample. Looped bass line of a jazz bass into a new Fender rumble/210, recorded with a Zoom recorder about 5 feet away. Starts clean, then you can hear the pedal click on. I make adjustments to the gain/volume at each round of the loop.
     
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  6. gregmon79

    gregmon79 Supporting Member

    Dec 20, 2012
    Chicago IL
    I agree jumble, the hot tubes is awesome with bass. It really does pushed tubes very well. And the tone bypass is killer on it. I really enjoyed mine while I had it. The only reason I sold it was because I had other OD's that fit my needs better right now. I could totally see myself getting this pedal again down the line. Great pedal. This coupled with the glove, you've got your tubey grit and od fully covered.
     
  7. eloann

    eloann

    May 14, 2012
    Switzerland
    I've been wanting one for guitar for a while. Never thought it would be useable on bass as well but I like what I hear until 0:55 where it becomes too much.
     
  8. Stan_da_man

    Stan_da_man

    Aug 29, 2006
    UK
    How did you find the bass loss? Was there any with the tone engaged or disengaged?
     
  9. ChaseBassism

    ChaseBassism

    May 17, 2019
    Does the hardwire cm2 sound more "tube-like" than this Hot tubes?
     
  10. The Hot Tubes is the same circuit as the Way Huge Red Llama, just some different values. Personally, I thought the EHX was fizzy. I like the Way Huge a lot more.

    None of these pedals sound like tube amps though. They’re meant to overdrive tubes. So the question becomes, what are you looking for?
     
  11. They both have a generic "tube warmth" to my ear but those terms are so relative these days because there are so many differing reference points. I take my reference point from my 1967 Fender Bassman head that I keep in my studio. Both of those pedals have the same saturation characteristics because of the circuit design as the Fender Bassman Circuit. Hot Tubes has a simple tone control that can be bypassed for a full range tone a bit more bass but can be a bit strident with a bright or active bass. The CM10 is a really nice pedal because it has two gain stagings and tone sections one more vintage and the other more modern, to my ear there is less bass loss more of a tightening unless you are a real boom junkie.

    There are other budget pedals that do a more comprehensive job of tube emulation but you will need to pick your flavor. The Joyo "Soound" series are very good based on the Tech 21 series that is all but discontinued.
     
  12. Stan_da_man

    Stan_da_man

    Aug 29, 2006
    UK
    No matter what low gain OD or dirty boost tube emulation pedal I use, it never sounds like a tube amp.
     
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  13. jumblemind

    jumblemind I also answer to Bryan Supporting Member

    Aug 27, 2011
    Knoxville
    IIRC, there was some perceived loss when the tone was engaged, but I'm not sure if there was actual loss or just more focus on the upper mids.
     
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  14. It all depends on your reference point for "tube amp" that good old Fender Bassman/Showman/Twin clean tube amp "pickup truck" tone or some souped up hot rodded tube monsterized gain stacked Marshall/Boogie/Bogner freakazoid tube amp?
     
  15. johnk_10

    johnk_10 vintage bass nut Supporting Member Commercial User

    Feb 16, 2008
    Washington, Utah
    John K Custom Basses
    actually the hot tubes uses a 4558 dual opamp going into 4 of the 4049UBE CMOS stages, whereas a red llama just uses two of the 4049UBE stages and no 4558. while they're both CMOS based, the red llama is a much simpler circuit and, IMO, the two don't sound anything like
     
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  16. Thanks for the explanation. I found a lot of similarities feel-wise, but just couldn't get over the high end response on the Hot Tubes.
     
  17. Stan_da_man

    Stan_da_man

    Aug 29, 2006
    UK
    Is the Red Llama still produced?
     
  18. johnk_10

    johnk_10 vintage bass nut Supporting Member Commercial User

    Feb 16, 2008
    Washington, Utah
    John K Custom Basses