Wow, I just have to say, this is an amazing power amp that I should have tried years ago. For the longest time I thought I needed more power after owning an QSC PLX 2402 for like 12 years and was using a 1/4" to 1/4" connection to an Eden Navigator. That was a big mistake. I should have at least been using a mono TS to XLR connection, it would have drove the amp with a higher gain. And after owning both a QSC 3002 and 3402 recently, the 1804 to me works much better. That input sensitivity of 1.2V, no bridging (because who really needs to bridge 3000W at 4 ohms into one cab?) The 900W at 4 ohms per channel is devistating. I love it. Tons of headroom and great clarity. And at 13 lbs.....man what an amp. I just picked up an Aguilar DB750 and man does that amp rock. But the QSC seems to offer a little more clarity as it's much dead flat.....so your preamp matters. It was interesting running the preamp out from the DB750 into the PLX 1804.....got a different sound. I liked it! It's fun playing around with amps. Just thought I'd share this post for anyone still messing around with rack gear.