I thought about getting that amp from the same seller for a friend. I had a defective Db 2K also, and I think the same people do the repairs when it goes bad? I had the DB fixed and it still ran hot and started smoking again. I could have have got it fixed again, but what's the point when the repair guy has no clue. I had these problems at a 2 ohm load. I have 2 BRZ2400.1ds now and have no problems, and they never get hot. I could fry an egg on the Db Drive amp. Someone was complaining about the BB2400 on another forum (ROE) and they bought it from the same seller.