Headway EDB-2 VAP; Equaliser Direct Blender; 2-Channel Preamplifier and Harmonic Enhancer, Acoustic Preamplifier, Pro Audio Valve (tube), Equaliser, D.I., anti-feedback, blender, 48v, 10v & 5v phantom power, dual action harmonic enhancers, USB charger; for pickups & microphones via battery or D. C power supply; with custom enhanced features, for two instruments; Harmonically enhanced analogue technology with tunable high harmonics; Two channels with two sets of interactive 5-band EQs and two mutes; Enhanced class "A" inputs & top pro audio circuitry producing a huge 32dB of low noise gain; Send & return FX loop; Mono, stereo or mixed outputs via jack & XLR; Tunable notch filter to bypass feedback and resonance on both channels, 2-way phase reverse and ground lift switch; Range switch (HPF) for guitar, bass or violin/mandolin across each channel; Power supply included