AFAIK, this previously required a second purchase from W4S and a some shipping costs:
To my surprise, Len Wallis here in Oz is offering this as a 'turnkey' product -
1100 AUD still isnt cheap, but if you can avoid purchasing an external reclocker from the likes of Empirical, I assume that's worth the upgrade over the standard ZP90 ? Peachtree dont seem to offer the hidden compartment in their newer integrated DAC/amps, but for those with the older Nova/decco/decco2/idecco models .....
Interested to hear from someone who has heard the Cullen-modded version - seems to get rave reviews everywhere else.