I played my MTD 535 through Kuma9's Tec Amp 1000, which was connected to my UL410 S2, and my views of the tonal characteristics are consistent with Bowlus review in Bass Gear Magazine. In typical German fashion, it was hi-fi, of the highest quality, and controlled; not boomy in the bottom, nor brittle in the highs. I question whether a Rocker would like this head. It fits perfectly in the pop, R&B, Smooth Jazz genre. Interestingly, when I A/Bed it with my Mark BAss LMII, and had my back turned to both rigs, I picked the LMII. To my ears the LMII was more open. I also went to hear KUMA'9's band perform at a Showcase. He was playing his NordyJ5 through Berg 210, and he cut like a hot knife through butter. He had to cut through 2 horns, 3 vocalist, drummer, keys and guitar. I liked the bass and treble boost as well as the compressor. The Tec Amp 500 does not have these features. So the Tec Amp is worthy of serious consideration.
Thanks for posting that clip.