SPECIFICATIONSSampling Frequency44.1 kHzAD Conversion24 bits + AF method * AF method (Adaptive Focus method) is a proprietary method from Roland & BOSS that vastly improves the signal-to-noise (SN) ratio of the AD and DA Conversion24 bitsEffects108 typesPatches99 (User) + 99 (Preset)Phrase Loop32 secNominal Input LevelINPUT: -10 dBu, AUX IN: -20 dBuMaximum Input LevelINPUT: +7 dBu, AUX IN: 0 dBuInput ImpedanceINPUT: 1 M ohm, AUX IN: 27 k ohmsNominal Output LevelOUTPUT (L/MONO, R): -10 dBu, PHONES: -10 dBuOutput ImpedanceOUTPUT (L/MONO, R): 1 k ohm, PHONES: 44 ohmsRecommended Load ImpedanceOUTPUT (L/MONO, R): 10 k ohms or greater, PHONES: 44 ohms or greaterControlsDOWN switch, UP switch CTL1 switch EASY SELECT button, EASY EDIT button, FX1/COMP button, OD/DS button, PREAMP button, FX2/MOD button, DELAY button, REVERB button, MEMORY EDIT button, EXIT button, ENTER button, MENU button 1 knob, 2 knob, 3 knob Expression pedalDisplayGraphic LCD (132 x 32 dots, backlit LCD)ConnectorsINPUT jack, OUTPUT (L/MONO, R) jacks: 1/4-inch phone type CTL2, 3/EXP2 jack: 1/4-inch TRS phone type AUX IN jack: Stereo miniature phone type USB COMPUTER port: USB type B DC IN jackPower SupplyAlkaline battery (AA, LR6) x 4, AC adaptor (sold separately)Current Draw200 mAExpected battery life under continuous useAlkaline: Approx. 7 hours * These figures will vary depending on the actual conditions of use.AccessoriesOwner's manual Leaflet "USING THE UNIT SAFELY" Alkaline battery (AA, LR6) x 4Options (sold separately)AC adaptor: PSA series Footswitch: FS-5U, FS-5L, FS-6, FS-7 Expression Pedal: FV-500L, FV-500H, Roland EV-5