The orange Phase 90 effector allows for speed adjustment, adding depth to your guitar's tone. - Model Name: Phase 90 - Color: Orange - Output Terminals: Yes - Speed Adjustment Knob: Yes - Input Terminals: Yes Thank you for viewing. MXR CSP026 '74 Vintage Phase90 Said to be a reproduction of the vintage Phase 90 This model only runs on batteries, but I was using it with a plug that converts from the battery snap to a regular adapter. As you can see from the image, the casing has been modified to accommodate the plug. Retail Price: 13,800 yen (excluding tax) (Sound House) Operation has been confirmed.