Car mostly now. 2.5β Pioneer dash speakers, 6.5β Polks and 6.5β Kenwoods, 10β Pioneer sub and monoblock amp. About a million times better than any upgraded audio system in a new car. Crystal clear audio, very tight controlled bass. Itβs sublime.
Otherwise in the house from Apple Music Lossless through the Sonos Arc+sub gen 3+ surrounds and HomePod minis, very rarely through the home theater Atmos syste (Yamaha TSR-700 and Onkyo fronts and sub, and Niles in ceiling surrounds).
Iβm a firm believer in not wasting money on expensive amps and gear for marginal gains (pardon the pun). I went to school for audio engineering and have mixed on $100K speakers. They sounded phenomenal but I have more fun in my car with its ~$600 system than anywhere else. Audio is very psychoacoustic. When youβre groovinβ the system almost doesnβt matter.