Well as many of you know Mr. Jung purchased a Heart Rock a couple of weeks ago and published a review here on these very pages. But (as every one who went to the Bowlous GTG knows) an amp isn't tested until the Burk man puts it thru it's paces LOUDLY! Mikebass was going to show but both of these amps were over mikes 8 lb. weight limit for an amp head! For our test we had a Thunderfunk with a new Schroder 1210L cab and a Heartrock thru an Epiphani 410UL. The basses used were Kens Celinder with Stainless round, My Sadowsky NYC with Bright Nickels and Kens MTD 535. The Scotch was Maccallen 12. And now the results. The Heartrock w/ the Epiphani: Thru the Sadowsky this combo sounded good, very clean with lots of headroom. Finger-style the tone was "livable", to my ears this combo didn't work slapping at all. I personally would not want to own this combo with my Sadowsky for the "top 40" type R & B gigs I play. With the Celinders exaggerated Top end this combo sounded more "gritty" and would probably work better. The MTD brought out the best of this combo, think Richard Bono or Jimmy Hislips VERY clean BIG sound. Pretty cool combo for a Jazz or fusion gig. The Heartrock w/ the Schroder. First I'm not a huge fan of schroders sound, I think they lack a "roundness" in the bottom end IMHO. But I liked this combo better overall. The Schroders exaggerated low mids added punch w/out bottom to the Heartrock. The Celinder sounded aggressive and fairly Marcus like with this rig although the bottom was still clean. The Sadowsky sounded very "even" and the extra grit of the Schroder and low end punch of the Sadowsky made for a very big sound. You would have no problem laying the foundation at any reasonable sized gig with this rig. The Thunderfunk w/ the Schroder. Ken said if he had to chose he would still chose this rig and I agree wholeheartedly! The Celinder sounded like a funkmonster with this rig EVEN with me playing! Ken remarked that my playing sounded better, nope, it was the rig! The Sadowsky rocked with this combo. It sounded very cool slapping and the finger-style tone was most excellent. The rear pickup Jaco "burp" was there! Conclusions: The Heartrock is kinda off a cleaner DB750 (Agullar) with unlimited headroom and a very even sound. It didn't have the blooming low end of the aggie, to me a good thing, but it lacks the grittiness of the aggie, to me a bad thing. The MTD with the Heartrock/Epiphani would be a killer combo for a player who plays a lot of chords and solos a lot. But for a meat and potatoes gigging musician the Thunderfunk/Schroder (Jorge got it much closer with this cab!) with either a Sadowsky or Celinder is a KILLER RIG at about 70 lbs. total for the amp. Here's a shot of the setup and one of Ken enjoying a REAL man's bass!