Reccomend me an A/B box for my rig.

Discussion in 'The Stomp Box' started by Telefan33, Sep 28, 2020.

  1. Telefan33

    Telefan33 TDPRI Member

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    I have a Radial Tonebone Headbone pedal that I use to switch two amp heads through one cabinet I also a would like to add a A/B box to switch between my amp heads and combo amp. This should although me to switch between 3 amps and I have no need to for stereo or both. What would be a good A/B box preferable with the jacks on the top of the pedal?
     
  2. MojoTrwall

    MojoTrwall Tele-Meister

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    Any with jack on the top of the pedal.

    An A/B box is just one DPDT or a 3pdt with three jack.

    It costs 8€ to make, when being fancy with passive volume post 10€.

    Chose the one you visually enjoy more.
     
  3. Piotr

    Piotr Tele-Afflicted Silver Supporter

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    Couldn't disagree more. Yes, it is a simple device, but when switching between two amplifiers, you need make sure that the A/B box has proper isolation between the A/B channels, so you don't get a nasty ground hum (+ a ground lift switch, preferably).
    In addition, I would heartily recommend an A/B/Y pedal (running your guitar into two amps at the same time). Many people don't look back after they try running two amps in parallel (especially wet/dry, but that's a different can of worms). In that case, you'd need a phase switch to make sure that your amps are running in-phase.
     
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  4. MojoTrwall

    MojoTrwall Tele-Meister

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    A/B box has proper isolation between the A/B channels, so you don't get a nasty ground hum (+ a ground lift switch, preferably).

    That's the case for a number of pedal, especially for modulation where you can get clock ticking.

    Every pedal with no proper isolation gets noise since signal get through in an out.

    In fact, it's less a concern, since it's the basic switching of any pedal used for one jack to another.
     
  5. noname_dragon

    noname_dragon Tele-Meister

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    Radial Tonebone is their excellent ABY switcher with all the features, but I'm not sure of the jack arrangement
     
  6. sudogeek

    sudogeek Tele-Meister

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    I have a Radial ToneBone Twin City. Works well and has both ground lift and phase reversal switches which can be helpful for eliminating hum in dual amp/stereo set-ups. I would recommend this, even though output jack are on the side.
     
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  7. MojoTrwall

    MojoTrwall Tele-Meister

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    For Y concern.
     
  8. JuneauMike

    JuneauMike Poster Extraordinaire

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    Yep, this right here. I looked at passive AB/Y boxes to run two amps at the same time and the major issues are phase cancelling and ground loops and passive boxes don't have a remedy for either. I bought a Tone Bone, and as much as I hated spending the money toward such a simple objective, I have since needed both of those features to kill some noise or eliminate phase issues. Active AB/Y is the safest route.

    You might be able to get away with a passive box in most cases (if you are a hobbyist just playing on your couch), but if you can't risk it then I wouldn't. Those things always show up at the worst possible time.
     
  9. Telefan33

    Telefan33 TDPRI Member

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    I just ordered a JHS Mini A/B. Anyone use this?
     
  10. MojoTrwall

    MojoTrwall Tele-Meister

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    Damn everyone read the op.

    Before giving and advice, understanding the need is the first thing.

    Regarding the jhs it's an A/B box si it'll do the job as any A/B and is a 1590B enclosure so small.
     
  11. Piotr

    Piotr Tele-Afflicted Silver Supporter

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    Not really - you are confusing pedal power issues with a ground loop between the amps.
     
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  12. MojoTrwall

    MojoTrwall Tele-Meister

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    I know the differences between a non filtered power and ground loop.

    Your point is A/B box need more isolation than other pedals, which is totally untrue, since A/B is basic pedal wiring.

    Having a clock bleed on a modulation device has nothing to do with the power filtering but with wiring getting the noise in the signal path.

    By it's nature, A/B box is the easiest form of pedal to make.

    Your call applies to any build in a pedal.
     
  13. JuneauMike

    JuneauMike Poster Extraordinaire

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    Running an A/B box to switch between pedals and using an A/BY box to run different amplifiers are very different things.
     
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  14. MojoTrwall

    MojoTrwall Tele-Meister

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    Op don't want an A/BY he cleared stated this.
     
  15. Piotr

    Piotr Tele-Afflicted Silver Supporter

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    If it is only for A/B and there is just a single wire going to each of the outputs, it can work without a ground loop, I guess. What is inside that JHS, nobody knows, but if it's JHS, then it probably works hum-free.
     
  16. JuneauMike

    JuneauMike Poster Extraordinaire

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    He did not clearly state that, but that seems to be what he's getting. A pedal that switches between amps and cannot select both.
     
  17. Charlie Bernstein

    Charlie Bernstein Poster Extraordinaire

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    Loop-Master will make any configuration to order.

    He's slow, but the prices and quality are great.

    (Remember the good/cheap/fast triangle: A straight line can only bisect two sides. So you can get things good and cheap, good and fast, and cheap and fast, but you can't get anything good, cheap, and fast.)

    But you already ordered something. I'm sure it'll do what you want. Let us know!
     
  18. Telefan33

    Telefan33 TDPRI Member

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    I got the pedal and loud hum on amp head 1.

    Pedalboard looks like this: guitar - tuner - distortion - delay - ab - amp head switcher

    Any ideas why this is causing hum?
     
  19. JuneauMike

    JuneauMike Poster Extraordinaire

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    Ground loops maybe?
     
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  20. Peegoo

    Peegoo Friend of Leo's

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    Radial Big Shot ABY.

    It's AB or ABY, it has ground lift, phase flip, isolation, it's completely passive (no batteries to go dead), and it's built like a little bulldozer.

    This one...not the newer version with the LEDs.

    https://www.proaudiostar.com/radial-big-shot-aby.html
     
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