Just got it in yesterday and played with it tonight at church (see sig for rig...i run my power amp @1200 watts into my 210xst), and I totally love it. This thing has enough clarity to let my bass growl be heard easily, while at the same time having a nice warm sound that has a soft mellow attack when i play softly, and really can come through with that percussive punchyness when i pluck harder. It's surprising because when i thought about it it seems almost contradictory that it can be both soft and warm with a light touch, yet punchy and growly when i play hard. Overall it has a pretty meaty and full/satisfying sound. I also tried the DI out during the 2 sets, and it sounded very nice post-eq, i didnt try the DI pre-eq but i'm sure it would've been nice too. I kept the treble at 12 oclock, mids at 10, bass at 2, both bright and deep switch off. The effect loop options are awesome, and that fender-style jewel is nice. Only thing I dont like is the lack of a front panel power switch, but thats ok since I use a rack mounted surge strip on the back rails anyways. Oh yeah I also dialed in some overdrive with the volume/gain knob up, and the tubes broke up really well. Very different from the breakup i got from my old SWR IOD and current Ampeg SVP-Pro, but very satisfying. I never used the overdrive/distortion on the ampeg because it took too many knob twists to go from a clean sound to dirty sound with teh same volume, and i did use overdrive on the IOD a lot but the power tube breakup sounds more...hmmm...chunky and affects more of the tone, and I was able to blend in clean tone. the DB659 breaks up nicely for subtle grit without needing a clean blend. I always read about the db659 in comparison threads, but not too many about the unit itself, i'm kind of surprised more people don't talk about this guy. I got a great deal on it, so i'm a happy camper. Rock on.