Features: Powerful Analog Machine: The volca bass is an analog bassline groove box that has what you need for a wide range of bass lines. Great choice for acid house and many other styles of music.  Analog bass sound: Three oscillators generate a variety of bass sounds, newly designed analog filter for crisp, bright response, simple structure with single VCF, VCA, LFO, and EG.  Loop Sequencer: Slide function that’s indispensable for acid and other types of electronic music, with Active Step function to generate new bass lines by removing or inserting steps, a step sequencer distilled from the electribe series.  Convenient Functions: Self-tuning overcomes pitch drift - the weak point of an analog synth, Sync jack and MIDI IN connector allow synchronized performances with multiple units or with your DAW.  Compact & Portable: The machine size is only 7.6*4.5*1.8in, compact size with battery(Not included) powered feature makes it portable for easy control and convenient carry.   Specifications: Model: VOLCA BASS;  Keyboard: Multi touch keyboard / Step key;  --Synthesizer;  Type: Analog synthesis;  Structure 3VCO, 1VCF, 1VCA, 1LFO, 1EG;  VCO Wave: Saw, Square;  VCF: Cutoff, Peak, EG Int;  VCF Type: Low pass filter, 12db/oct;  VCA: EG on/off, Sustain on/off;  LFO: Rate, Int, Target(Amp, Pitch, Cutoff), Wave(Triangle, Square);  EG: Attack, Decay/ Release, Sustain;  --Sequencer;  Number of Parts: 3;  Number of Steps: 16;  Number of Recording: 8;  --Connectors;  Audio Output: Headphones(3.5mm stereo mini jack);  Sync: Sync In(3.5mm monaural mini jack, Maximum input level: 20V); Sync out(3.5mm monaural mini jack, Maximum output level: 5V);  MIDI: In;  Battery Life: Approximately 10 hours(using alkaline batteries);  Power Supply: AA alkaline battery * 6/ AA nickle-metal hydride battery * 6/ AC adapter"KA-350"(Not included);  Dimension: 19.3 * 11.5 * 4.6cm / 7.60 * 4.53 * 1.81in;  Net Weight: 370g / 13.05oz;  Package Size: 26.3 * 15.3 * 7.1cm / 10.35 * 6.02 * 2.80in;  Package Weight: 820g / 28.92oz;   Packing List: 1 * Analog Bass Machine;  1 * Sync Cable;  1 * User Manual