Having been pretty much always in possession of as good an audio system as I could afford ever since I started working more than 30 years ago, I have discovered my interest in audio (as well as of course music) to be deepening as years go by. Have a preference for tubes, open baffle dipole or planar speakers. Having fixed on my speakers, integrated amp, and tube DAC source, I recently discovered the strengths of balanced power conditioning. I find myself tweaking more than I should (perhaps) - resonance control, EMI/RFI, placement of speakers/components/random things in listening room, etc.