I have an Empirical Audio Off-Ramp, but, after a year, have still not used it. One day soon, I promise myself. . .
Other than that:
System 1: Bryston BCD-1 black 17"
System 2: Tascam CD-01U Pro > Bryston BDA-1 black 19" rackmount
System 3: Sony SCD-XA5400ES CD/SACD player
System 4: Teac/Esoteric P70 > Universal Audio 2192
System 5: Teac VRDS-25X (with ASE-Audiotuning transport mods) > Lavry Black DA10 (with Upgrade Co. mods)
Wherever a digital IC is required, I use Mogami W3173 wire and the XLRs Neutrik makes specifically for digital applications.