VocoPro  VSP-M1 Multi-Effect Digital Signal Processor/Mixer Fully BPM (Beats Per Minute) synchronizable multi-effect signal processor includes reverb, echo, pan, flanger, trans, filter and pitch bend Vocal Harmonizer with 2 stages of higher octaves, 2 stages of lower octaves and double effect Professional Digital Echo can be used simultaneously with vocal harmonizer, reverb and all other effects Range and Level parameters for each effect 3 XLR or 1/4" mic inputs with invidual volume controls