Joefish nailed it!
At first its largely about getting the right "focus" and allowing initial break in. Once it sounds as Joe describes, then you assess what tweaks if any might be applied upstream to take things to a higher level. I've found once dialed in that the OHMs will respond to most all common tweak types that knowledgeable listeners might recommend. That can be anything from maxing out performance with the amp, tweaking the sound via a pre-amp, or even via ICs, cleaner power, etc.
At first its largely about getting the right "focus" and allowing initial break in. Once it sounds as Joe describes, then you assess what tweaks if any might be applied upstream to take things to a higher level. I've found once dialed in that the OHMs will respond to most all common tweak types that knowledgeable listeners might recommend. That can be anything from maxing out performance with the amp, tweaking the sound via a pre-amp, or even via ICs, cleaner power, etc.