Purifi Class D: Junk?

I have listened quite carefully to a pair of monoblocks made by Apollon Audio using the PuriFi modules. In my system, in my room, with my own source material, I consider them in the same league as the well-respected Class AB amp I normally use -- I might wind up liking them better. As a frame of reference, the AB amp has an MSRP more than twice what I paid for the monoblocks, delivered. (I don’t intend a value comparison -- there are reasons for the cost differential, at least some of which involve value added, such as dealer support, longer warranty, and so on. Just to say it’s not a low-cost item.)
Oh -- I don't think either the AB or the PuriFi amps are "junk."

Well, I installed the VTV input boards and Sparkos opamps today. I won’t post immediate findings because those are always defunct within a day or two so I’ll let it burn in for the time being.

I got the VTV with their buffer. I tried all of the op amps, (each requiring at least 36-50 hrs break-in with noticeable changes), and the Weiss, which is from their $25k Medeus DAC, absolutely blew everything out of the water. Pure transparency. Only then do you hear what the Purifi is capable of...completely on another level of musicality, sweetness, transparency. Completely smoked the Sparkos and Sonic Imagery.

Granted, I also upgraded all internal cabling to Furutech DSS and added their pure copper posts and inlets. Phenomenal once you get through a few hundred hours of burn in.. I played for a friend that has a whole setup of Tron amps (do the $ math) and $10k+ in power conditioning, with the same Furutech cables I have, and he was blown away. The Purifi module really does accomplish what Bruno set out to do, which is give you the best of tubes without the artifacts (that some like for hi-fi listening). I use this in my studio.

And yes, the amp out of the box sounded like complete garbage, worse than a portable bluetooth speaker. Needs real burn in to get there. And the buffer board exists for a reason..email Daniel Weiss for more info. ;)

@clustrocasual That's very interesting. If the Weiss is that good perhaps I'll hold off on returning it. How did you replace the cabling? Including the Molex connector cables?

I did not replace the Molex from the hypex power unit to the amp module, but its on my list. I would have to source the right cabling for this.

I did remove the Molex that connects to the IEC inlet and soldered the DPS directly to that board. I used the Furutech pure-copper connector clips for all other points, and soldered the interconnect from the XLR inlet to the board.

I plan to do a write up with pictures once I'm done with some final testing in a couple weeks. I did each part one at a time so I could hear differences, and with Furutech's notorious 300hr burn in, its taken me a few months. I don't change anything unless I hear a clear improvement. 

But the first thing I did was test the op-amps with basic OFC cabling and the Weiss really opened my eyes. (or is it the Purifi opened my eyes because the Weiss is transparent?).