MODEL GT-30H POWER 30w SPEAKER NO IMPEDANCE 16ohm,8ohm 4ohm (switchable) FEATURES Auto standby Four EL84s and three 12AX7s AC mains input, international voltage selector switch 100V/120V/200V/220V/230V/240V 50/60Hz 2-channel preamp Pre- post-gain controls on lead channel Normal volume control on clean channel 3-band passive EQ(bass, middle, treble) Boost switch Footswitch selectable channel switching and reverb Speaker output jack Spring Reverb Hi-Fi OPT precise parts used for lowest noise 5W metal oxide power resistors, 600V polypropylene film/foil and polyester military capacitors Black Vinyl covering Front board 3mm aluminum-alloy Back board 1 mm stainless steel Connect with GT-30C DIMENSIONS 51(W) x 27(H) x 25(D)(CM) (Unpacked) 58(W) x 35(H) x 37(D)(CM) (Packed) WEIGHT 15.5KG (Packed) 12 KG (Unpacked) OEM and ODM welecome Kits are provided Keyword kldguitar google ,and contact with us directly so we can reply you in time