Living room system: class A or AB amps?


Would class A be suitable for a living room system? Apart from hi-fi listening sessions, it's also used a lot for watching TV.

Would it make more sense to get good class AB amplifiers, which can be switched on permanently without drawing huge amounts of power? I wouldn't want to warm-up an amp first before getting good sound.

For this system, I have so far only purchased the speakers: Focal Stella Utopia Evo. Room is big: 1,200 square feet with openings to hallways.

I'd consider to pair them with Gryphon Mephisto and Pandora. But that's class A...

Opinions and amp suggestions are welcome!

robert1976
Clayton Audio Class-A amps fly under the radar but get stellar reviews and most models have a high/low-bias switch.  The S2000 would sufficiently power pretty much anything and costs $11,500.  Just another option to consider, and best of luck. 
Personally, I have my stereo on most of the day if not 24/7, so AB for me.

If you are looking into class A, consider the Lusman 590, which has much more power than it's spec.

https://onahighernote.com/oahn/wp-content/uploads/2016/05/REVIEW_160601_Hi-Fi-World_Luxman_L-590AXII...
Class A amps do sound good very quickly after fire up, and I prefer the ones I have, anyway, to many Class AB amps.

The downside is that the smaller versions of my amps put out 25 watts of sound and 300 watts of heat, and power consumption is accordingly high. (I believe mine put out 40 w and emit around 400 watts of heat)
Class A amps do sound good very quickly after fire up,
Because they (at least mine do) reach around 80% of their "A" bias straight away, the other 20% takes a bit longer once the heatsinks get warmed up.
This is why I always recommend "if you have the money", the Gryphon Antllion, as when switched to low bias everything is on, but it's only 5w bias, kind on your power bill, but warm enough so that when your ready to listen, you press 100w high bias and it gets there much quicker. Or you leave it at 5w for parties, background music, etc There is a 50w medium button, but I don't know what you'd use that for.

Cheers George