We have the Blackstar Amplug 2 Bass Fly Guitar Headphone Amplifier with FX. They sound so good isolated through headphones!

AmPlug2 FLY Bass is specifically designed for low frequencies and offers a wide range of response. There are three distinct channels built-in, Classic, Modern and Overdrive, and a custom Tone control, to take your sound from deep and booming to bright and cutting. Engage one of the six different Rhythm loops to find your groove and jam along.

3 bass channels in one unit.

Classic - Valve-inspired tone with mid-range growl
Modern - Fat bottom-end with a mid-scoop and extended treble
Overdrive - Smooth, natural overdrive with plenty of bite
Six different rhythm loops built-in

Select from Rock, Funk, R&B, Hip Hop, Blues, Metronome and set the beat with the simple Tap Tempo control.