I recently saw a Radial newsblurb about a new device to share a pedalboard between two amps, they had a diagram showing the setup etc.
DAMNED if I can find the diagram again!
!@#$%^&*
So you'd run "Amp-A" to your amp, and "Amp-B" to to a DI/FOH.
One FX board with two different signal chains, Done.
DAMNED if I can find the diagram again!
!@#$%^&*
Twinline Guitar Effects Router
The Twinline begins with two effects-loop connections for the two amps, each of which is equipped with send and receive ¼” jacks along with individual send and receive level controls plus a polarity reverse to ensure the amps and pedals are in phase with each other. A third send and receive effects-loop is then used to connect to the pedalboard using ¼” hi-Z jacks or balanced lo-Z XLRs for use with studio-grade professional line level effects. In effort to eliminate hum causing ground loops, the two amplifier effects-loops are 100% transformer isolated and supplemented with ground lift switches. Switching between the loops may be performed using the front panel AB switch or via the optional JR2 remote control. The JR2 is equipped with two footswitches whereby the first is used to select the amplifier effects-loop and the second is used to bypass the effects altogether. Bypassing the effects is done via gold contact sealed relays for true-bypass signal flow. Using the remote control is particularly advantageous as it allows the Twinline to be positioned adjacent to the amplifiers, eliminating a tangled mess of spaghetti!
As with all Radial products, the Twinline is made in Canada using heavy duty 14 gauge steel. A recessed front panel creates a protective zone around the knobs and switches to keep them safe from overly zealous roadies. A full bottom no-slip pad allows the Twinline to be positioned on the guitar amp without fear of it sliding off. Powering is done with the included 15VDC power supply.
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So you'd run "Amp-A" to your amp, and "Amp-B" to to a DI/FOH.
One FX board with two different signal chains, Done.