GK Update:
Well, I got the new GK amp out to band practice yesterday and gave it a good workout, and WOW! It sounded great! It takes my sound to a whole new level. There were times it seemed like the bass was playing itself, because I was standing there listening and I couldn't believe this incredible sound was coming from me!
Yea, I know that is as much due to the bass as to the amp, but at least this amp lets the Alembic come through, loud and clear. I also can't say enough about these Dr. Bass cabinets. They sound fabulous, they look classy, and they are built like rocks. An incredible value for the price I think.
So anyway, this GK amp has a little switch on it, to change the amp to be voiced (whatever that means) for a 5 string bass vs. a 4 string. I was a bit curious about this, because I have never been entirely pleased with the tone of the B string on my bass. It just always seemed too muddy and undefined for my taste. And if I tried to set the tone so the B string sounded acceptable, it ruined the tone of the other four strings for me. So when I first got the bass about six months ago, I tried to incorporate the 5th string into what I play, which was easy enough to do from a playing perspective. It was easy enough to extend my scales onto the new string, since it is an even interval, but I never liked the sound. It didn't have the drive and punch I like. So honestly, for the last 2 or 3 months, I have just been avoiding the B string.
Of course, it is not always so easy to just ignore that 5th string. You see, I have a few, admittedly bad, habits from 25 years of teaching myself to play. Like, sometimes I wrap my thumb up over the top of the neck to deaden an open E note, while my other fingers are off playing something else which would clash with the E if it kept ringing out. And of course I can't do that with the 5th string in the way. This technique, or lack thereof, is an integral part of a few songs I play. Now, I have other ways to mute strings while I play, so for the most part it is ok, but there are a ccouple of songs where these new techniques just sound sloppy to me, or at least not right.
Sorry to ramble on, this is just a long way of saying, that even though I was skeptical about what it would really do, I did push that little 5 string switch on the GK amp, and WOW! It completely brought the B string to life! It has all the punch and clarity I want, while still keeping a great tone on all the other strings. And I am not sure if I understand how it does it, but it also fixes the problem with muting my open E. Those techniques that sounded sloppy through my old amp, sound just fine now!
Sorry for such a long post, I am just really hyped up here.
And thanks to everyone for the responses. It is great to see that other folks have had good experiences with these amps.
Curt