- Boss ME-90; Multi Effects Pedal for Electric Guitar; compact Hands-on guitar processor; Eleven onboard AIRD amp models and 60 different effects derived from the GT-1000; 36 preset and 36 user patches; Manual mode for pedalboard-style operation and Memory mode for switching complete patch setups; Load up to three user speaker IRs; Send/return loop for external pedals; Edit parameters, swap out amp and effect types, and more with BOSS Tone Studio; Controls: Preamp type, Gain, Bass, Middle, Treble, Level, Reverb, Comp/fx1 type, Sustain/Sens/-1oct, Attack/Tone/-2oct/depth, Level/Peak/Direct, OD/DS type, Drive, Tone, Level, Mod type, Rate/Key, Depth/Harmony, E.level/Resonance, Delay type, Time, Feedback, E.Level, Output level, Pedal FX type; Push Buttons: Exit, Write, CTL, Edit; Switches: Bank Down/Amp, Bank Up/Eq, CTL/REV, Memory/Manual, 1/Comp, 2/OD/DS, 3/Mod, 4/Delay, Pedal FX, GT. Amp/Line, Power; LED: 2 Characters; Connections: Input (1/4" Jack), Output (L/Mono, R) (2 x 1/4" Jack), Send & Return (2 x 1/4" Jack), Phones (1/8" Stereolinke), USB Type-C; Power Supply connector: Barrel Connector 5.5 x 2.1 mm, center negative; Current Draw: 190 mA; powered by a 4 x AA Batteries or a DC Power Supply (not included); suitable optional Power Supply: Item no. #409939; True Bypass; Dimensions (W x D x H): 443 x 220 x 67 mm (17,44" x 8,66" x 2,64"); Weight: 2,9 kg (6,39 lbs)