Zoom B1X Four Bass Multi Effect, Multi-Effect Pedal for Electric Bass, 71 Internal effects, 9 Amp simulations, Usable up to five effects simultaneously and in any order, Looper with a length of up to 30 seconds / 64 beats in CD quality, Integrated expression pedal, Guitar Lab software for creating, editing and managing effects and patches, 68 Internal rhythm patterns, 50 Memory slots, Swap function for a particularly simple patch management, Automatic storage of all patch parameters, Integrated chromatic tuner, Auxiliary input jack, Output jacks for connection to the amplifier or headphones, Back-lit LCD with contrast adjustment, Lightweight and compact for transport in your gigbag, Easy integration into existing pedal-boards, Running time of up to 18 hours, USB port for firmware updates, power, and connection to Guitar Lab, Controls: Bass, Mid, Treble, Volume, Push-buttons: Rhythm, 5 x Effect Slots, Looper, Settings, Memory, Switch: Effect Up, Effect Down, LED: Effect On, Foot-switch: Looper, tuner, expression pedal, Input and output: 6.3 mm Jack, AC adapter connector, USB, AUX IN, Power consumption: 500 mA, Power supply by way of 4 AA-batteries (running time of up to 18 hours or an optional 9 V DC power supply (not included, suitable power supply: Art. #105835#), Dimensions (W x D x H): 156 x 216 x 52 mm, Weight: 610 g