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In Reply to: RE: Purifi Based Amps posted by Joe Mags on September 10, 2020 at 18:22:19
Here is the most up to date list that I know of (@ 20 listings).
https://www.audiosciencereview.com/forum/index.php?threads/ultimate-1et400a-purifi-amplifier-sonic-shootout-%E2%82%AC820-to-%E2%82%AC8-344.14048/
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Someone posted an interesting podcast interview with Bruno Putzeys a few weeks ago. After hearing him speak - and owning a Hypex-based amp for over a year - I'd be very inclined to buy a Purifi amp if I was in the market. I have a Nord amp and I see a few Purifi options from Nord on the list. I'm very happy with the service and build quality from Nord.
I just would like to see someone do a test of one of those amps that cost two to five times as much but based on the same modules. What surrounding components could justify the added cost? Are those discreet input buffers that special, or just made from more expensive and labor intensive parts?
Agilist, Musician, Photographer, Audiophile
Magneplanar: 3.7, CC5, MC1, DWM; Outlaw: UltraX12, LFM-1C; Emotiva: XMC-1, PA-1; Nord: Nord One NC500DM; Outlaw: Model 7500; OPPO 205
@MarcL,All of the boutique opamp input buffer versions that ASR has measured to date have measured less clean than Purifi's EVAL1 input buffer.
The EVAL1 measures 3dB better without pre-gain than with pre-gain so if any improvements are to be had, would be have pregain without the 3dB loss in SINAD. So far, I haven't seen anyone achieve that.
These boutique opamps appear to be expensive tone controls (which can be done elsewhere).
VTV just posted a tube based input buffer version for a significant price increase (+ $1,250). I understand they are a tube company, but don't see the value add other than marketing.
The only possible "value add" that I have seen is a micro-controller version from Vera Audio that allows bridging of both the NC500 and Purifi modules but they aren't cheap.
https://www.vera-audio.com/newsarticle.php?news_id=3
Edits: 09/11/20 09/11/20
Someday someone will offer a vinyl input buffer that cuts a vinyl master and plays it back into the amp in real time for that "pure analog" fidelity :-)
Agilist, Musician, Photographer, Audiophile
Magneplanar: 3.7, CC5, MC1, DWM; Outlaw: UltraX12, LFM-1C; Emotiva: XMC-1, PA-1; Nord: Nord One NC500DM; Outlaw: Model 7500; OPPO 205
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