Electro Harmonix BASS9 Bass Machine, Effects pedal for electric guitar, Generates different bass sounds from the instrument signal, No special pickups necessary, With a new algorithm that has been revised for transposing one to two octaves down with superior dynamics and optimised tracking, 9 Bass sounds: Precision, Longhorn, Fretless, Synth, Virtual, Bowed, Split Bass, 3:03, and Flip-Flop, Instrument signal can be mixed with bass sound (effect), Fast tracking, Independent Effect and Dry volume controls for effect output, Extra Dry output socket outputs your input signal unchanged, Controls: Dry Vol, Effect Vol, Control 1, Control 2 and Preset selector switch, Powered via included 9 V DC power supply, Power consumption: 100 mA, Dimensions (W x D x H): 102 x 121 x 89 mm@+*Connectors:*@+@+, Input: 6.3 mm jack, Effects output: 6.3 mm jack, Dry output: 6.3 mm jack, Power adapter: AC adapter, 5.5 x 2.1 mm, negative polarity inside