MIDI Recorder - Real-time recording, playback Number of Songs: 1 Capacity: Approximately 40,000 notes (per song) Demo Function - 1 demo song; 10 piano demo songs. Function Volume Adjustment Metronome Other Functions Transpose: ±1 octave (-12 to 0 to +12 semitones) Octave Shift: Main part, layer part, ±3 octaves Tuning: A4 = 415.5 to 465.9 Hz (Initial Default: 440.0 Hz) Scales: 17 preset scales" MIDI Function 16-channel multi-timbre receive; GM Level 1 standard APP Function Supported Devices: iOS, Android (USB terminal connection) Jacks PHONES/OUTPUT jack: Stereo mini jack (3.5 mm) AUDIO IN jack: Stereo mini jack (3.5 mm) (Input impedance: 10 kΩ; Input sensitivity: 200 mV) USB TO HOST port: micro-B USB TO DEVICE port: Type A PEDAL jack: Standard jack (6.3 mm) (pedal sustain, sostenuto, soft, metronome) AC adaptor terminal 9.5V DC Power Requirements 2-Way Power [Batteries] AA-size alkaline batteries × 6 or AA-size rechargeable nickel metal hydride batteries × 6 Battery Life: Approximately 3 hours continuous operation Actual continuous operation time may be shorter due to battery type, performance type, and usage environment. [AC Adaptor] AD-E95100L (DC 9.5V) Speakers 13 cm × 6 cm (oval) × 2 (Output: 2.5 W + 2.5 W) Power Consumption 9.5 V = 7.5 W Dimensions 93.0 (W) × 25.8 (D) × 8.3 (H) cm (36 5/8 × 10 3/16 × 3 1/4 inch) Weight Approximately 4.5 kg (9.9 lbs.) (Excluding batteries)