My dad, who is a guitar player in NYC, says that just about all you see up there are Walter Woods heads and GK MB combos. Well, I can't afford a WW's and I've heard a lot a bad things about the MB combos on TB
That says a lot right there, doesn't it? People on TalkBass don't like it, yet all the NY pros are using it.
A lot of the gear I own and have owned (strings, pickups, amps, basses) has been bashed to some degree here. I guess that why there are more choices than ever in the vast world of bass gear.
Honestly, I undestand why some people don't like the GK combos. Compared to some of the newer and/or boutique amplification, it is not a "hi-fi, natural, transparent, my-bass-only-louder" type of amp. The amp has a sound character of it's own which you either like or you don't. I like it because it's so portable, puts out a lot of sound, takes up very little room on crowded stages/theater pits, never sounds boomy and the active 4-band EQ and voicing filters let me control the crucial midrange frequencies that allow me to dial out harsh mids for a smooth, deep sound or add some midrange punch to cut though on a noisy stage or in a room with bad acoustics. My SWR WorkingMan's 12 with it's bigger cabinet and tweeter would just sound muddy in these situations. My biggest beef with that amp is the inability to control the midrange frequencies.
I've compared the GK to an AI Contra more than once and I prefered the "direct" sound of the GK every time. I will say that an AI Clarus through AER cabinet sounded great, but now you are talking about twice the price of the GK. I'm sure the EA, AER, IA and AEIOU gear does sound more natural, but as far as a big sound in a small, tough package the GK is hard to beat and a lot of people besides myself seem to think it's a great amp for amplifying a double bass. It's versatile too. I've used it to drive a 2x12 cabinet at rock band volume levels and with the internal speaker switched off it could have driven two of them.
End of GK commercial.
Good luck on your amp quest.
- Steve