yes, leaving headroom for the pre-emp is only about 1 bit. Gerzon made excellent digital EQ curve RIAA de-emp presets in the Waves Q10 and was well aware of phase response issues, being MAG. At 8:43 -0800 3/10/10, Jim Sam wrote: >On Tue, Mar 9, 2010 at 6:42 PM, Eric Jacobs <[log in to unmask]>wrote: > >> Transfering FLAT will cost you about 6-7 bits of dynamic >> range - an audible loss. >> > >36-42 dB*? ~10-12 is more like it, which is two bits max. That leaves 22 >bits, which is more than adequate.