Bastl Instruments Kastle ARP; Modular Mini Synthesizer with Sequencer; Sinewave oscillator with pitch quantizer and digital waveshaper; Note control knob for selecting the pitch and Chord control knob for choosing a triad chord; Boot Mode allows to set root note and fine-tuning; Timbre control (waveshaper) with modulation input and attenuator; adjustable decay envelope; separate outputs for Arp and Bass signals; internal LFO with triangle and pulse waveforms; clock input and patch points to manipulate the internal sequencer / shift register; patch points for connecting to external gear; line/headphones output (3.5mm jack); powered via batteries (x3 type AA) or Micro USB port (batteries and power supply not included); dimensions (WxDxH): 70 x 60 x 50 mm; including 10 patch cables