Loaded with a nearly limitless amount of tonal control, the HA4000 produces 400 watts into 4 ohms and 220 watts into 8 ohms. Extensive tone-shaping includes a special Shape circuit with a variable intensity control that lets you change the voicing of your instrument to suit different amp setups and applications. In tandem with a comprehensive 4-band EQ section with two fully parametric mids, it gives anyone the freedom to create more tone colors A D-Bass EQ control provides sub harmonics enhancement for deep bass tones. In terms of interfacing flexibility, the HA4000 features a special DI output that converts a buffered version of the guitar input signal to a balanced, low impedance format for driving any cable length, PA or slave bass system. A balanced Preamp output lets you drive another bass system while retaining all of the original tone settings. A Sub Bass output provides a preamp signal suitable for driving a combination subwoofer/amplifier system. Other features include a special Mute switch for all outputs except the tuner output to allow instant tuning on stage; Pre and Post-EQ effects loops and more.