The Carl Martin Andy Timmons Signature Compressor/Limiter. It has been developed in corporation with Andy Timmons to create a user-friendly yet versatile Compressor/Limiter with its two presets. Andy Timmons, long-time user and fan of the Carl Martin Compressor/Limiter, suggested to Carl to create a Compressor/Limiter with two presets, so that he had a preset for more subtle rhythm parts, and a preset with more hard compression and sustain for other parts as solos without having to take up real-estate on the board for two Compressor/Limiters. The result is a two-preset option for Compression Rate and Level. In order to save knobs and to be as user-friendly as possible, the Threshold and Response settings are fixed for both presets, leaving the pedal with only six knobs, the Threshold and Response being 6 mm miniature knobs. As something new, the Carl Martin Andy Timmons Signature Compressor/Limiter incorporates the newly developed DC/DC converter circuitry. This enables us to run the pedal with + -12V internally, which is necessary in order to maintain the same sonic quality and headroom as on the ''old'' Compressor/Limiter using a regular 9V DC 200 mA power supply(not included). The Carl Martin Andy Timmons Signature Compressor/Limiter has been developed to incorporate the same features, sonic clarity, quietness, and performance of the best studio Compressor/Limiters. Spend a little time with us here in the manual and you can learn some of the basics of compression and limiting, and how to get the most out of your pedal.