Currently I have a stereo system in the living room with the following components.
DAC: Matrix Mini I Pro
AMP: Marantz SR5400 AVR
Speaker: Vaf DC Floorstander.
Now I am looking to upgrade the AMP to something better (I know AV receivers are usually not that great in SQ). I've read pretty good reviews with
the inexpensive T-amps (Topping TP60, SMSL SA160, 98E, etc.) but have not actually listened to them. How do they stack up to Marantz SR5400 in terms of SQ? Would I be better off to get a second hand Marantz, NAD, rotel, etc?