jros, I received my 1.7i s in June of of 21. After a year of listening to all types of music, I am very satisfied with the current system, all digital amps.
Digital Amp Co, 4800A 200wpc, sent back for a new transformer due to tranny buzz. Up graded power supply and power rails. Now called a Megaschimo 265wpc. This powers my 1.7i s and DWMs Very black background, music seems to boil up out of nowhere.
Peactree Audio, AMP500 250wpc. This powers my swarm/DBA sub system from 40 hz on down. The swarm is 3 10s in three large boxes, a pair of tens together in smaller box 23x10x13, last 12 woofer in a large box. These are seldom needed.
Dac Maraschino w/ 60 volt power supply 200wpc for side channel MMGs.
2 MiniGan5s for rear channels and Atmos.
1.7i s use magnarisers airborn stands, best spent money anywhere.
2 DWMs wired to Megaschino also used. DWMs are 200 to 40 hz, not much, together a nice full bottom end. DWMs use Mye stands
Marantz AV8801, Panasonic BDUP9000, ZU speaker wire and Audio Envy ICs, DBX XLR223. Questions PM me.