TC Electronic RH450 450W Bass Amp Head with TubeTone, SpectraComp, Onboard Tuner and Presets Adapt your sound to your instrument and preferred music style in a snap (presets, tuner, TubeTone, SpectraComp per string compression) Ultra portable due to size, weight, auto-sensing PSU and built-in tuner control your sound in any application with rehearsal input, recording output and DI output 3 user memories easily switch between your 4- and 5-string basses, or your Rickenbacker and Fender Jazz Flexible Tone Controls voiced to give you plenty of tweaking options to nail the perfect tone