The Blackstar U120 is a Unity Series 12" 120W bass amplifier designed to deliver versatile tones and built-in effects for bassists in the studio and onstage. It features 120W of solid-state power driving a custom-designed Eminence Opus 12" speaker mounted in a closed-back cabinet. Classic, Modern, and Overdrive voices are available at the flip of a switch, as are the built-in compressor and chorus. A footswitch is provided for hands-free toggling of the overdrive and chorus.Effectively manage your gain structure using the input gain, clip indicator, -10 dB pad, and master volume. The pad allows easy accommodation of basses with low-output passive pickups or hot active electronics. Shape your tone with the 3-band EQ, which boasts a semi-parametric mid band. Connect your mobile device to the 3.5mm aux input and play along with backing tracks or your favorite songs. Output connections include an XLR for linking to a Blackstar U250ACT (available separately), an XLR line output with a ground-lift switch, and a 1/4" headphone jack with an independent level control.