�??�?�¢�??�¢??�??�?� B1 FOUR offers over 60 built-in effects�??�?�¢�??�¢??�??�?� B1X FOUR offers over 70 built-in effects�??�?�¢�??�¢??�??�?� 9 amp models for simulating classic rigs�??�?�¢�??�¢??�??�?� Up to 5 effects can be used simultaneously chained together in any order�??�?�¢�??�¢??�??�?� Built-in expression pedal for control over any parameter (B1X FOUR only)�??�?�¢�??�¢??�??�?� Looper for recording up to 30 seconds / 64 beats of CD-quality audio�??�?�¢�??�¢??�??�?� ZOOM Guitar Lab software for creating editing and managing effects and patches�??�?�¢�??�¢??�??�?� 68 built-in rhythm patterns which can be used in conjunction with the Looper�??�?�¢�??�¢??�??�?� 50 memory locations for storing user-created patches�??�?�¢�??�¢??�??�?� Auto Save function for automatic saving of all patch parameters�??�?�¢�??�¢??�??�?� PRESELECT function allows silent patch selection while the current patch remains operational�??�?�¢�??�¢??�??�?� Onboard chromatic tuner�??�?�¢�??�¢??�??�?� Input jack accepts standard mono bass guitar cable (both active and passive instruments supported)�??�?�¢�??�¢??�??�?� Auxiliary input jack for connection of personal music players�??�?�¢�??�¢??�??�?� Output jack for connection to amp or headphones�??�?�¢�??�¢??�??�?� Lightweight and small enough to fit in your gig bag�??�?�¢�??�¢??�??�?� Easily integrated into any existing pedal board�??�?�¢�??�¢??�??�?� Runs on 4 AA batteries with alkaline battery life of 18 hours�??�?�¢�??�¢??�??�?� USB port for firmware updates power and connection to ZOOM Guitar LabWhat�??�?�¢�??�¢?�¬�??�¢?�¢s in the Box