The JHS AT+ is Andy Timmons' signature overdrive with a second channel. The drive side is the original AT circuit, unchanged: Volume, EQ, Drive and Air, plus a three-way toggle that gives the feel of different amp wattages. Up is 25-watt, with the most compression and saturation; down is 50-watt, a balance of compression and openness; the middle is 100-watt, with the most volume and open crunch.
The addition is an independent footswitchable Boost, a slightly dirty pre-boost that hits the front of the drive channel for more saturation and definition. Because it is independent, it also works on its own to push your amp or another drive. The AT Mini is the same AT circuit fixed at 100 watts in a smaller box; the AT+ is the one with all three voicings and the extra gain stage. It runs on 9V or 18V.
SPECIFICATIONS
SPECS
Country of Origin: United States
Type: Overdrive with independent Boost
Drive Channel: identical to the original AT
Boost: slightly dirty, overdriven pre-boost; usable alone or with the drive channel
CONTROLS
Volume: output level
EQ: bright/dark tone control
Drive: high gain blues to heavy distortion
Air: rolls in top end like a presence control
SWITCHES
Wattage Toggle: 25-watt (up), 100-watt (middle), 50-watt (down)
Footswitches: two, drive channel and independent Boost
POWER
Power: 9V DC center negative; can be safely run on 18 or 9 volts
Current Draw: 15mA
DIMENSIONS
Dimensions: 2.2" x 4.8" x 1.6"



