The Ampeg SVT-4 PRO Series Bass Head gives you lots of tonal control and lots of power. This true hybrid features a 3-tube preamp, a Mos-Fet power amp that delivers 1,200W into 4 ohms, tone-shaping tools, and all the Pro features you'll ever need. For tone control you get 3 tone controls, a 5-position mid switch, a 9-band graphic, and ultralow/high boosts. It also features a defeatable optocoupler limiter, a variable 0-7:1 compressor, an internal 24dB/octave crossover, a 50Hz-1kHz crossover point, high/low balance control, tuner out/mute function, 1/4" biamp outputs, 2 balanced line outs with transformers, 2 effects loops, and 2 preamp out/power amp ins. It gives you classic SVT tone and more..