Strict: Sony D-777, MDR-E484 (I can't stand Ety's on the move)
Strict, not mobile: D-777, ER4P's
Slightly less strict, not mobile: Denon DCP-150, ER4P's (According to Dan Pumphrey, the ER4S's are happier with WATTS of power in reserve)
Loose, outside noise not an issue, mobile: Japanese Panasonic SL-CT570, Cal Gamma DAC, Headroom Cosmic, Grado RS-1 (Flat pads)
Loose, outside noise not an issue, immobile: Denon DCP-150, (Cal Gamma, Headroom Cosmic), Grado RS-1
Loose, outside noise an issue, immobile: Denon DCP-150, (Cal Gamma, Headroom Cosmic), ER4P/S
Loose, outise noise an issue, mobile: Japanese Panasonic SL-CT570, Cal Gamma DAC, Headroom Cosmic, Sony MDR-CD1700 || Sennheiser HD-25 || Beyerdynamic DT831
(...) - Optional
DAC/amp a must (?) for the DVD-PA65-based setups.
Criteria:
Strict: Earbuds + CDP only.
Loose: Anything that can run off of 24 volts or less DC, or has internal batteries is allowed.
Immobile: Player/transport need not have anti-skip
Mobile: Player/transport must have 10 seconds anti-skip minimum. (SL-CT780 is thus excluded, as it has no anti-skip for digital out)