Teenage Engineering OP-1 Accessory Kit Features:

• Accessory kit for OP-1 synthesizer workstation
• Crank gives you full control over hand-crank recording mode and endless sequencer playback
• Bender includes rubber band for a unique style of manual modulation
• Brick Shafts are LEGO-compatible, allowing you to customize your control knobs
• FM Antenna allows you to use radio frequencies as an audio source