Mr. Black Pedals Analog Chorus/Vibrato Deluxe; effect type: chorus, vibrato, 100% pure analog BBD modulation, 100% pure analog signal path, extremely faithful frequency response: Dry Freq. frequency response: 22KHz - 15Hz, Wet (BBD) Freq. Frequency Response: 11.6KHz - 16Hz, very high headroom (18VDC capable), digitally controlled true analog output waveform/modulation, full wet/dry mix control, lag control (basic BBD delay: 4mS - 12mS), Shine control (smooth BBD high-freq roll-off), Tap tempo with dedicated real-time LED waveform/rate indicator, Extremely wide LFO speed range: rate control: 16.66Hz - 0.423Hz cycle (60mS - 2.36S), Up to 0.076Hz (13S) cycle via Tap tempo footswitch, Four true analog waveforms (selected via Tap[Wave] footswitch): Triangle, Square, Sine, Glitch/Random, True-Bypass, Input impedance: ~500K Ohms, Output impedance: ~2K Ohms, True-Bypass, 9VDC - 18VDC 2.1mm negative center-pin power, ~62mA current draw (=100mA recommended), Country of manufacture: USA.