Pettyjohn Shift

Pettyjohn Shift pedal takes all of the balanced I/O options from the PreDrive Studio and fits them into a Foundry Series box! The design of the pedal started with the buffer/boost circuit found in all three versions of the PreDrive and Lift. The pedal provides a 30dB boost of crystal clean gain from a basic 9v power supply.

The Shift’s most significant use may be as a direct box. We call it an active/passive direct box design as it uses our buffer/boost circuit to drive a high quality, USA made transformer to balance the signal. To activate this mode simply switch the output mode mini-toggle to ‘B’ for balanced out mode. This design is paramount and unique in the direct box world because it utilized an active gain stage to drive a transformer, just like high end studio mic preamps.

The output transformer can be activated via the output mini-toggle which, beyond direct box mode, it can also be used with an unbalanced cable to add real analog color to the tone.

The balanced line-in mode is designed for two tasks. The first task we designed for is re-amping guitar takes in the studio. When the input mini-toggle is switched to ‘B’ for Balanced-in mode it activates a studio grade Burr Brown Line receiver stage that can be run at unity gain or line level via the PAD switch, which inserts a -20dB pad for accepting true line level signals. The SHIFT in this mode can accept virtually any balanced signal and then convert it to an unbalanced signal for sending to your pedals or an amp with utmost fidelity and transparency. Use the PAD and Gain knob to adjust the gain staging until it is perfect for your use.