Check the listing for details. AnalogWorkshop - Dyna Comp - Onboard Compressor. Condition: New. Listed at 78.00 USD. Hello, I offer for sale AnalogWorkshop DynaComp - onboard guitar compressor: https://analogworkshop.eu/products/dyna-comp/ Features: > Effect is analog design, > Handmade, high quality, each unit tested, > Power: 9V battery (the battery is not included), > Low current consumption > High-quality components, > Volume control, > Sensitivity control, > Small size PCB: 48 x 30mm > Easy installation on guitar, > Included: manual (pdf), battery connector, potentiometers, > Ability to work with other instruments than guitars. Please keep in mind that depending on the case of a given guitar, installing the preamplifier may require a luthier to fit the PCB into the guitar's electronics chamber. Before buying, please consult your dealer or a trusted luthier.Made by AnalogWorkshop.eu