Peavey MAX 115 Bass Combo Amplifier Low, Mid, Mid Shift and High semi-parametric EQ Fantastic bass from this small combo 15 inch speaker 60 watts (rms) into 4 ohms Max/Modern/Vintage voicing switch with patented TransTube(r) tube emulation circuitry Tuned, ported enclosure with exclusive dual HyperVent(tm) technology Legendary Peavey reliability