Gallien-Krueger

The Gallien-Krueger MB Fusion 500 incorporates the same all-tube preamp of the Fusion 550 and maintains the amazing portability of the MB2-500. The bass amp head delivers 500W at 4 ohms, 350W at 8 ohms, and features an all-tube, 3x12AX7 preamp. The GK MB Fusion head has a 4-band active EQ, variable contour with mid frequency select, and Deep and Bright switches, so you've got total tonal control.

Features:
500 watts @ 4 ohms, 350 watts @ 8 ohms
All tube preamp (Three 12AX7s)
4-band Active EQ
Variable contour with mid frequency select
Deep and Bright switch
Mute switch
Active/passive switch (-14dB)
Effects loop
Tuner out
XLR out with pre/post EQ and ground light
2 Speakon outputs