The ALESIS/SR16 is a standard drum machine equipped with real & natural sounds. It features 233 realistic and natural sounds. Each sound includes both dry and reverb-applied versions. The SR16 also incorporates Alesis' unique Dynamic Articulation feature, which changes the drum sound depending on the playing strength. Specifications: ■ 24-bit stereo drum machine ■ Number of sounds: 233 sounds ■ 50 preset patterns ■ Adapter included Operation confirmed. Instruction manual included. AC adapter is not included. ■ Specifications Audio Output: 4 (stereo pair x2) Input Pads: 12 (velocity-sensitive) Sample/DAC Bit Depth: 16/18 bit Sounds: 233 sounds Polyphony: 16 voices Pan: 7 positions Velocity: 8 levels on pads, 127 levels via MIDI Timing Resolution: 96 (per quarter note) Tempo Range: 20-255 BPM Notes/Patterns/Songs: 12000/400 (200 user, 200 preset)/100 Drum Kits: 50 user, 50 preset (MIDI program change compatible) Synchronization: MIDI clock/song position pointer To prevent swapping, refunds and returns will not be accepted. Please be assured that I will handle any issues with sincerity only if it is clearly determined that the fault lies with me. Thank you for your understanding.