"This pedal I used to use as my splitter. It's a great pedal. It does a lot of things. But I used to use it as a splitter when we had only two amps. It has such a warm boost that I have in there now just for the boost so that when we use that, which is something we kick on very often, it's not like a lot of other boost pedals that add a lot of top end to them. This keeps kind of a transparent sound," explains Dan Auerbach's guitar tech about the Tonebone Switchbone JX-2 Pro.

00:49, at 2010 Tour in Russia.

Full routing

• Boss Chromatic Tuner,
• T-Rex Luxury Drive booster

then the signal goes to the pedalboard, apparently to

Overdrives/distortions:
* Ibanez Tube Screamer TS808, * Digitech Bad Monkey Tube Overdrive, * T-Rex Møller.

Chorus/Phasers/Flangers:
* T-Rex Twister Chorus & Flange above

Reverbs/Delays:
* Boss FRV-1 '63 Fender Reverb by his side, * Boss Digital Reverb RV-5 below, * Electro Harmonix Holy Grail reverb by his side, * Line6 DL-4 Delay Modeler outside the pedalboard.

Amp switcher: * Tonebone Radial JX-2 Switchbone AB amp switcher + booster.

As he seems to select which amp he goes to (there's the both option too; maybe he just uses it as a final boost for both amps), I imagine he doesn't use the effects loop of the amps, or maybe the reverb/delays part goes through the effects loop of only one of the amps?

After going crazy I found this great work by a japanese that saved me from searching the Holy Grail (don't think I'd had identified it) and the Delay:

http://garymoore.blog.fc2.com/blog-category-25.html

In this tour of Kerrys Rig you can see his JX-2 Pro. Best shot at about 2:00.

At 3:24 The Radial Tonebone can be seen in the bottom left.

On Radial's website, Townsend was mentioned as user of Radial Switchbone.

This image comes from an article from Austin City Limits where they outline some of Jeff's gear. You can see a Radial Switchbone on top of his Vox AC30.

The Radial Switchbone is a fantastic addition to my rig. It allows me to run my two favorite amps at the same time without compromising my tone. The mid boost is the coolest feature. I turn it on when I need a lead to sing and sustain without thinning out my sound. If only I had this pedal 20 years earlier!

"I run both of the heads into a Radial Tonebone Switchbone and that allows me to plug both heads into one cabinet."

"The Radial Switchbone sounds great! It is the best ABY box that I have used and the transformer isolation makes it easy to combine any two amps without noise." - Holdsworth about Radial Switchbone.

As spotted on his pedalboard, Doyle Bramhall II is using this effect.

At 4:53, you can see the Tonebone Switchbone on Seth's pedalboard. He uses it to switch between amps.

The Radial Tonebone JX¢2 Pro Switchbone is an exceptional AB-Y switcher. It allows you to drive 2 guitar amplifiers at the same time without introducing noise, hum, or coloration and to switch between amplifiers without problems. It employs the class-A circuitry from the acclaimed Radial JD7 Injector for exceptional audio performance. The compact pedal has been optimized for maximum, yet simple, performance.