The BOSS GX-1B is an ultra-portable digital multi-effects and amp modeling processor specifically designed for bass players. According to the manufacturer specs via West Music and official BOSS product listings, the technical specifications include: Audio Processing & Core FeaturesAudio Quality: 24-bit AD conversion (utilizing BOSS’s proprietary Adaptive Focus method), 32-bit DA conversion, 48 kHz sampling rate, and 32-bit floating-point internal processing.Amp Modeling: 16 bass amplifier types powered by AIRD (Augmented Impulse Response Dynamics) technology.Effects: 135 integrated BOSS effect types.Simultaneous Blocks: Supports up to 8 simultaneous effect blocks, plus a dedicated volume pedal block and noise suppression.Memory Slots: 99 Factory Presets and 99 User Memories.Looper: Onboard phrase looper with 38 seconds in Mono.