If amps sound bright or trouble with silibance, it is the pre-amp/room corrections software in my experience. Source material also makes a difference when selecting an amp. Will the main source be vinyl, digital stream, ect. Then the DAC's come into play. Myself, I use a vintage Yamaha M 80 which is hard to beat without spending several thousands of dollars.
Klipsch RF 7 based HT 7.4, Pioneer SC 35, Acurus 200 Five, Dayton 18 Ultimxa Dual Sub Cab(2), Dayton 18 Ultimax Large Vented Sub Cab (2), on Berhinger I Nuke DPS amps, Samsung BDP F 7500, Asus/My Book Live HPC 4 TB
Yaquin VK 2100 amp, McIntosh XR 5 speakers, Samsung BDP F 7500