Your question has languished unanswered. I can't answer specifically as I haven't used a ZTPRE with a Class D amp. I have been using lately a Chinese amp with a German chip--the manufacturer both says it uses a German chip as used in "chip amps" and that it is a Class D amp, so I'm not sure which it really is but. . . I'm using it with a CSP3 with Anniversary mods and a ZROCK2 and to be honest the sound comes very close to the Taboo Mk IV with Anniversary mods I stuck it in place of, just lacking the "roundness" of instrumental image that Taboo dishes out. It makes up for that with gobs of power and a bit of a warmer signature.

So my guess that the ZTPRE would also really make this amp shine, though so far I have only used it with Decware amps (I love it, very much, I keep thinking I should get the Anniversary Mod on it but. . . it's so hard to imagine my system without it even for a few weeks!--I live to listen to this system as is!)

I know that with its cost and the long long wait it's taking a chance, but my guess is that if you have a Class D amp you really like you'll like it even more with the ZTPRE.