Check the listing for details. Radial Engineering X-Amp Active Re-Amplifier. Condition: New. Listed at 249.99 USD. The Radial X-Amp™ is an active Reamper™ that allows the engineer to play a pre-recorded track back through guitar amplifiers and pedals. This opens the door to explore new musical sounds and spur on the creative process so that your recording stands out.Following the critically acclaimed Radial JD7™ Injector, the X-Amp employs a unique class-A circuit design that has been optimized for use with guitars. Features include balanced line level input with LED peak indicator and level control, class-A circuit topology for optimal reach and frequency response, a transformer isolated output to eliminate hum and buzz caused by ground loops, a 180° polarity reverse switch to bring both amps into phase, and a dual ground lift switch for noise-free operation. Active Reamp® with two outputs 100% discrete class-A signal path Transformer isolated to eliminate noise LED peak indicator and level control