These amps are great for home theater.
I have used QSC CX series, the DCA series previously as well as consumer amps. What I like:
Auto standby using less than a watt - no more switches
Aysmetric loading - example -can use 50 watts on one channel and 350 on the other (4:2 model). In my setup I put my left tower and left surround on one amp, right on another. This gives me more power to larger more distant speaker and less to closer on wall. PLUS any crosstalk to same side and essentially monoblock when in 2 channel use.
Cool - these generate almost no heat. Beyond start up the fan is usually off or too slow to hear (I sit 6 feet away).
Fan - little fan, easy to switch out. The 4 channel version have two little fans for more airflow at even slower/quieter speeds
Size - one rack unit, great for additional speakers for Atmos, etc
Connectors - no screw down barrier strips. Connectors easily take big or small wire and slide in and out, cheap replacements.
Efficiency- 1 run 12 channels on one 20amp circuit with extra capacity.
Price - Can be picked up pretty I expensively new or used.
Protection - clipping, etc
Hum rejection- had ground problem after switching from emotiva to marantz with QSC amps and had to disconnect amp side sheilds. No problem with the Lab Gruppens
Dislike: had one unit that fan had a little rattle or squeak
Front panel- it is a brittle graphite like metal prone to cracking, chipping, etc. You don't want to tighten down in rack with cordless drill, etc
Prefer light meters, not just indicators
Availability- not tons of these out there to buy used.
No specific manual for the four channel s (aysmetric loading applies only to channel pairs)