I connect a metal muff in topology 2 with the drive at 9 oclock with the dist. at 10 - 12 oclock and level adj. to level with no problems.. no clipping heard. I also use it as a clean boost on all channels I set it with the dist on 0 and the level maxed. ive also used a ts9 wich tightens it up. Overall it acts like a regular amp with boosts in front.