audiophilleo 2

Having used the AP2, JKSPDIF Mk3, Wavelink HS, and Weiss INT203 at the same time I'd say it's a matter of preference. They all sound great, but different. AP2 and Mk3, which are around the same price point, also sound the most different.

Having heard both AP and JK mk3 I can echo Eugene81 on the differencies between the two. JK is smoother and more analog like, where AP is more vivid and more resolving. Adding the PurePower battery PSU greatly improves the AP and I think that in that configuration, it is the best of both worlds.

In order of performance, I would rate all the converters involwed as follows:

AP + Pure Power
AP
JK mk 3
Stello U3
Halide
V-Link
HiFace

I haven't tried the SOtM piece.

@Devilboy yes, haven't updated my system for a very long time. A lot has changed - coincidentally the only constant has been my speakers and AP2, now with PP.

Nkbg: Thanks for the input. I've been living with the AP sans the PP and LOVING it. Two questions: 1) Can I add a PP to a standalone AP2? 2) Is the improvement of adding a PP to an AP2 big?

Devilboy - the word 'big' (improvement) is very relative in this hobby :) I found the improvement to be very worthwile cost wise. The fact that you can do it in stages (first buy a regular AP 1/2 and the add PP) is another bonus.

I'm affraid you will have to send your AP for upgrade as well. They need to make an internal modification to make the PP option work.