Roland Rt-30Hr Dual Trigger HARM is a phaser-like psychedelic

HARM is a phaser-like psychedelic harmonic tremolo not unlike the Uni-vibe found in some rare old amplifiers

For those learning music

perfect for powering a wireless microphone system such as the Electro-Voice RE3 or R300 (see user manual for details)

K&M 122a Tray walnut

If you turn it counterclockwise

Roland Rt-30Hr Dual Trigger HARM is a phaser-like psychedelicTrigger 2 (Head, Rim) Connector Output Jack (1 4 inch Phone Type) Accessories Owner's Manual Leaflet "USING THE UNIT SAFELY" Stereo Cable (3. 5 m, 11. 48 ft) Guide for Installation Rim Height 8mm 13mm (0. 31 inch 0. 51 inch), Rim Thickness (Max): 12mm (0. 48 inch) Inward Curved Allowance: 5mm (0. 20 inch) * in the case of Inward Curved hoop Size and Weight Width 39 mm 1 9 16 inches Depth 112 mm 4 7 16 inches Height 45 mm 1 13 16 inches Weight 69 g 0