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