Burn in time varies. However, IME, most perform 80-90% after a couple of days.
About tweaks, IME by far, the biggest ROI came with Townshend Seismic Podiums under my speakers. It is $2K+ but the change in SQ was literally transformative. Night and day! The improvement was as much, or more, than changing from a $3K cartridge to a $13K cartridge.
About tweaks, IME by far, the biggest ROI came with Townshend Seismic Podiums under my speakers. It is $2K+ but the change in SQ was literally transformative. Night and day! The improvement was as much, or more, than changing from a $3K cartridge to a $13K cartridge.