soulman969:
First, thank you for taking the time to reply. I know that "sound" can be a little like "wine tasting". In many respects, it's a perception thing. We all got these different "ears" when we were made
I am in Japan right now so my opportunities to try both a GK and a TC are limited in that so far, I haven't found a TC to play.
That being said, I did get to play a GK MB115 (MK-1) in a couple different stores. I think I could qualify my impressions like this: If the GK was the only amp I could get, I would be very happy with it. As far as my concerns about the "low end" tone, the GK had it with no issues I could hear. I know what you mean by a "round bass" tone and it was "enough" for me with the GK. The tone had plenty of bottom and had a wonderful "clarity" to it. This is what single coil / single coil stacked pickups are about right?
Something I really liked hearing when I tested this amp with my Bacchus "24" (fret) 5 String, was that unlike my old Ampeg SVT 115 combo, (weighs like a million pounds - feels like - use a hand truck with it), I could make use of every and all settings on my bass effectively. Rather than weighting everything to the low end, I could get something useful out of all the settings on my bass. Even switching from active ~ passive, I was getting really nice musical tone out of my bass. Yeah, I was very very impressed. I fell in love with my instrument all the more! Isn't that what it's about?
Now, would I like a BG250 more? I wouldn't know (yet).
I have seen a few more postings with the BG250 having some issue that required a replacement. I have seen I think? none, (doesn't mean that they never fail but...) for a GK amp.
I did write the company and their amps are assembled and tested, in the US, and the TC is assembled in China. That says something to me.
I also asked about the differences in the MB 115-II and they are 90~95% the same amp with a few nice changes:
Enclosure changes, circular port now, no more metal grill, just a wooden backed grill cloth, rotated the direct out to make more room for the release button on an XLR, DI has a Pre/Post switch now, the "chain out" (that does not support an un-powered extension cabinet - (unless you get the MB 210-II), one jack with a switch rather than two jacks to accommodate passive/active basses. It's an esthetic thing, but I like the black enclosure and control panel a lot.
I also asked specifically, and both models use switch mode power supplies. Interesting to me because as one who travels between US and Japan, that means "one amp".
My experience with pre-sales was really good. Answered all my questions very specifically - he actually read my email carefully! That was refreshing. And, he sent me a manual for the MK-II upon request.
I think I could easily just buy the GK and be very happy at this point. It has a sound I like, and I feel it would be more reliable. If I need "effects" or a tuner, I'll just use one of my pedals. I have more confidence in the US assembled and tested quality.
I'll be sure to write my own personal review when the deal is done.
Happy playing all!