I have 4 power amps and was going to get rid of 2 of them so I did an A/B test to see which ones I have the most use for. The amps are qsc 3402, qsc 1602, stewart 1.2 and a crest vs900. I used a modulus q5 with bart pu and aguilar pre, ashdown rpm1 evoII pre amp into a bergantino 322. I used one side of the amps at 4ohms. 3402 1100 watts 2 rack 21 lbs, 1602 500 watts 2 rack 21 lbs, crest 450 watts 3 rack arround 40-50 lbs, stewart 1.2 350 watts 1 rack 11 lbs. The winner was, well it depends on what your looking for. The crest sounded the best, a big difference. It had a much richer and fuller sound. Much better lows and crisper highs. The 1602 came in second. The stewart was a little to clean with the modulus. As far as volume the 3402 was loudest followed by the crest. Believe it or not, there isnt that much volume difference in all the amps. The 1100 watts has the headroom I need but I could get by with the 350 watts. All in all it depends on what you want. For the best sound, crest. For my gig rig, 3402. For studio or quiet amp use (like with upright bass) stewart 1.2. The qsc 1602 would be second choice in all the above wich maybe first for overall. btw, the fan in the 1602 is MUCH quieter than in the 3402. Even in idle. This is just my opinion, good luck.