Bass combo amplifier. The Session 77 is loud enough to work with most drummers and compact enough to be carried around. The two super high-efficiency and proprietary 7-inch speakers were designed by Phil Jones to get the most of the 100 watts class D amplifier. These two proprietary woofers are complimented by a high energy 2-inch K high frequency transducer. The response of this speaker system is of the highest fidelity from 30Hz to 20KHz, which means it does not only sound great with bass guitar but any instrument that plugs into it. It is a single channel bass amplifier. By using all digital circuitry the amp will work on any AC voltage from 100 to 260 Volts without the need of a voltage selector. Digital circuits are far more efficient that the old analog counterparts and the benefit is less wasted power as heat, thus giving the amp a greater longevity. It has a 3-band EQ controls, master volume control and a 3-way switch for mute and two sensitivity levels for active or passive basses. Dimensions: 432 x 318 x 216 mm. Weight: 12,7 kg. Colour: Black.