Go for both Tidal and ATC! My room is 30’x20’x9’ and I sit 20’ from my ATC300 towers firing down the long axis of the room using a Tidal Preos preamp/dac, fed by a Melco N10 player/streamer. With these ancillaries fronting the big ATCs, they are as musical at ANY level, not just loud. Though if you like your music loud, The Wall by Pink Floyd at 120db is something else, the Contrivas just cannot match them. I too also use 3 15” ATC subs in this system just to correct a small low frequency dip at my listening seat. Also, regarding costings, here in the UK ATC300s are £38k and this includes the matching active amps. Beware though that the amps are fan cooled and really need to be in a different room! With the cost savings add some ultra 5 Stillpoints under the speakers and they totally disappear for such a large, wide baffled speaker. They will not be too big for your room, believe me. I have lived with these speakers for 14 years now, they just get better and better with each front end upgrade. Truly superb value for money if you have a large room and like to “wind it up”. You can’t even damage them, push ‘em too far (after several pints) and the amps just go into standby ready for you to stagger into the next room and press the standby button again!