Radial Engineering Tonebone Bigshot ABY/Y MKII

ABY Amplifier selector

Image Radial Engineering Tonebone Bigshot ABY/Y MKII

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Latest User Reviews

5 years ago

Using two amps have never been easier

This thing works as it should, with no hum or noise when using two amps together.

6 years ago

So far this meets my expectations well. Have used it to send one signal to an amp with solid state preamp/ tube power amp, and the other signal going to DAW via a USBinterface. Very quiet. Also worth mentioning I used an isolated power supply. When tried with 2 Amps, the previously mentioned one and a Blackstar id core 40 v2, ground lift helped to remove some noise. However there was some higher pitched noise from the Blackstar. I suspect it is something to do with the digital amp circuitry. I am yet to try the device with two completely non digital amps. With both setup scenarios I did not notice any tone loss.

6 years ago

Works as intended

Not sure what to review on this. It works as intended, and it helped get rid of some ground loop hum. Great bang for your buck.

6 years ago

I use this to split my signal to a dry and a wet amplifier, so the ground lift and isolation switches are necessary to avoid ground loops and unwanted hum in either amplifier.

Costs a bit more than other alternatives, but the build quality and added switches make it more than worth it.

+) Build quality. I don't expect this to give up on me anytime soon.

+) Great added features to a simple ABY concept. (tuner out, ground lift, isolation and phase swap)

-) Higher price. But justified by great features and reliability.

6 years ago

does the job well.

7 years ago

Solid and works!

I love Raidial gear. Just found out about them and this is my 2nd piece in the last few months. Like the JDI this piece just does what it should in a really solid and clear way. Split your signal to A or B or have both playing. I just tried with vocals through 2 little amps for a live show and it worked perfectly. Its passive so you dont need power (unless you want the LED). It's a bit on the heavy side but still small. I can tell it's going to last for years. Solid, easy, small = Great.

7 years ago

I needed an ABY switch and juggled between this and the cheap Fender ABY switch. Somehow I decided to buy the one that was three times more expensive, just because the switch is more than likely to never break.

Didn't know why I would ever need a ground lift or isolation feature, but it definitely came in handy when I bought a second amp and plugged that into the pedal system. Massive amount of interference and fuzz kicked in, but with a push of a button, all noise disappeared!

7 years ago

Great tool if you use two amps. Compact size, sturdy construction, and it needs power just to lit the LEDs! The only thing I don't understand is why the ISO mode (which enables polarity inversion and ground/lift) is switchable.. to me it would make sense to have it always on. But it's just a small detail.

8 years ago

Nice ABY

I needed to run two amps at the same time, while I was recording. So, I was in hunt of nice ABY switch and this came up.

Pro: It has every features proper ABY switch should have. Built like tank, has enough LEDs so you know where your signal goes. On output [B], ground lift and isolation transformer to eliminate ground hums and buzz, can reverse polarity to prevent phase problem between two amps. Very effective and thoughtful.

Con: There's noticeable tone shifting when you engage 'Isolation transformer' on. So you had to tweak amp's knobs on output B again to get the sound you like.

If you are looking for proper ABY switch, look no further. Get this. I am giving just 4 stars because after recording, I hardly use it in actual gig or practice situations.

8 years ago

perfect!

I use this for a wet/dry setup.

pro:

isolation is key

gnd lift and phase switch

con

none

easy to use 10/10

Read all reviews >>

Technical Data

  • Manufactured by Radial Engineering
  • Average price : $165
  • Passive operation - no power supply required
  • True Bypass
  • Ground lift switch for output B
  • Phase reversing switches to match the phase orientation of the amplifiers
  • Switch for internal transformer isolation to eliminate hum
  • Toggle A / B foot switch
  • Both foot switch
  • 6.3 mm mono jack input
  • 6.3 mm mono jack tuner output
  • 2 x 6.3 mm mono jack outputs
  • Power supply via 9 V DC power supply (not included) with polarity (-) inside and min. 120 mA
  • Status LEDs
  • Metal housing
  • Power supply only required for status LEDs
  • Dimensions (L x W x H): 96 x 92 x 52 mm
  • Weight : 560grams
  • Made in Canada
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