That’s not correct. The platform, the control software, the sled were all changed. It’s a significant redo. As Alan himself says::
”A big part of the reason for the D1.5’s significance in 21st Century top-notch disc-spinning comes down to the transport. That high mass transport mechanism (MORSe to its friends) is a thing of beauty. There are two parts of a transport that are ludicrously expensive to fabricate for a company that isn’t making transports by the millions; the laser eye and the spindle. Technically, a company could even fabricate the spindle if it went a little crazy, but even in the highest of high-end there’s a degree of pragmatism that holds when facing vast tooling costs to make something that is already well-designed and engineered elsewhere. The laser eye… well, that’s simply outside of the wheelhouse of almost all companies in the audio world. In making its transport mech, CH Precision used the spindle-housing and laser eye from top-end Denon/Marantz CD/SACD players and engineered the rest. In other words, this is a massively engineered, 3kg transport mechanism that uses two parts from another company’s CD/SACD sled. The cynics in audio – of which there are many – will doubtless claim this means the D1.5 ‘is built around a Denon or a Marantz’ but that’s like saying a gin and tonic that’s in the same room as a bottle of vermouth is a martini!”