SY-1 puts BOSS's legendary guitar synth technology at your side with over 121 ultra responsive sounds in one pedal. Unleash your creativity in any pedal set-up, no background or special pickup required. From leads to basses and layered organs, 11 types and 11 variations bring you a total of 121 versatile sounds to explore. Control is quick and simple for Tone, Rate, and Depth adjustment, while latency-free performance keeps your sound unrestricted and right on time. Additional features such as mode switch, parallel send/return lops, and hold functions make SY-1 a dynamite tool to add to your performance.Features121 total sounds (11 types and 11 variations), all ready to play with no programming knowledge neededLatency-free performance for unrestricted musical expressionQuickly adjust sounds to taste with Tone/Rate and Depth controlsHold function for playing normal guitar over sustained synth voicesParallel send/return loop for easy integration with other pedals on your boardMode switch optimizes the synth engine for guitar or bassSupports extended control with an external footswitch or expression pedalSpecificationsNominal Input Level: INPUT, RETURN: -20 dBuInput Impedance: INPUT, RETURN: 2.2 M ohmsNominal Output Level: OUTPUT, SEND: -20 dBuOutput Impedance: OUTPUT, SEND: 1 k ohmsRecommended Load Impedance: 10 k ohms or greaterBypass: Buffered bypassControls: Pedal switch, GUITAR/BASS switch, TYPE knob. VARIATION knob, TONE knob, DEPTH knob, EFFECT knob, DIRECT knobIndicator: CHECK indicator (Serves also as battery check indicator)Connectors:INPUT jack: 1/4-inch phone typeOUTPUT jack: 1/4-inch phone typeSEND jack: 1/4-inch phone typeRETURN jack: 1/4-inch phone typeEXP/CTL jack: Stereo 1/4-inch phone typeDC IN jackPower Supply:Alkaline battery (9 V, 6LR61)AC adaptor (PSA series: sold separately)Current Draw: 85 mAExpected battery life under continuous use: Alkaline Approx. 3 hoursAccessories:Owner's manualLeaflet ("USING THE UNIT SAFELY," "IMPORTANT NOTES," and "Information")Alkaline battery (9 V, 6LR61)Dimensions (approx.): 3" x 5. 2" x 2.4"Weight: 1 lb. Boss SY-1 SYNTHESIZER PEDAL.