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AUDIO FORUMS >> General Discussion and Support >> iFi SPDIF iPurifier Digital Optical Audio Filter
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Message started by Matchstikman on 11/10/16 at 16:44:46

Title: iFi SPDIF iPurifier Digital Optical Audio Filter
Post by Matchstikman on 11/10/16 at 16:44:46

Has anyone seen this? I bumped into this while buying socks, of all things, on Amazon.

https://www.amazon.com/gp/product/B01KKFTM5S/ref=ox_sc_act_title_2?ie=UTF8&psc=1&smid=A13BNE3P7C8THK

Title: Re: iFi SPDIF iPurifier Digital Optical Audio Filter
Post by Lonely Raven on 11/10/16 at 20:11:13

I've not tried it, but everyone's getting on that bandwagon now that people are starting to believe that bits-is-bits is a fallacy.

IMHO, Optical Digital has too many conversions (from one media to another) and each conversion is jitter prone, and I think the bandwidth on optical SPDIF is only 24/96.

In theory optical would be ideal as it would galvanically isolate equipment, could better transmit the on/off bits than voltage based USB, and could have crazy bandwidth...but we'd need to drop the current optical standard and start fresh with a new format.

So I think there are better options out there.

Title: Re: iFi SPDIF iPurifier Digital Optical Audio Filter
Post by Donnie on 11/10/16 at 23:22:25

Bits is bits, zero is zero, and one is one. If so, why does it all sound so different to me? I must live in the grey zone in a black or white world.

Title: Re: iFi SPDIF iPurifier Digital Optical Audio Filter
Post by Ninja00151 on 11/17/16 at 06:12:13

I bought one and the smps that it uses injects a metric fuckload of noise into your power supply, contaminating everything else.

It was so bad I was able to find noise on my SPDIF output alone, with just the smps brick plugged in. I have no idea how this thing can pass FCC regulations, let alone be a "hifi" product.

Imho you're better off getting a DAC with built-in jitter correction. I plan on a Schiit Gungnir Multibit if I ever feel the need to upgrade from my Modi MB. Nothing against Steve's DACs, I just like Multibit DACs conceptually.

Title: Re: iFi SPDIF iPurifier Digital Optical Audio Filter
Post by Matchstikman on 11/17/16 at 14:39:57

Okay, in that same vein I ran into this:

https://www.amazon.com/Wyred-Sound-Recovery-USB-Reclocker/dp/B01CUTMKYM/ref=sr_1_1?ie=UTF8&qid=1479393531&sr=8-1&keywords=USB+Reclocker

Title: Re: iFi SPDIF iPurifier Digital Optical Audio Filter
Post by Lon on 11/17/16 at 14:45:40

Just thought I'd put this here in case it was not known about. . . .

http://www.psaudio.com/products/lanrover-usb-transporter/#tab-features

http://www.psaudio.com/pauls-posts/the-lanrover/

Title: Re: iFi SPDIF iPurifier Digital Optical Audio Filter
Post by Matchstikman on 11/17/16 at 14:53:47

Thanks, Lon. I did not know those products existed.

Title: Re: iFi SPDIF iPurifier Digital Optical Audio Filter
Post by Lon on 11/17/16 at 15:01:57

They're just hitting the market, just out of beta testing I believe.

Beta testing experience in part is chronicled here:

http://www.psaudio.com/forum/directstream-all-about-it/ps-audio-lanrover/

http://www.psaudio.com/forum/accessories-cables-tweaks-tuning/beta-testers-wanted-for-lanrover/page-14/

Title: Re: iFi SPDIF iPurifier Digital Optical Audio Filter
Post by Matchstikman on 11/17/16 at 15:42:08

PS Audio makes some nice stuff.

Title: Re: iFi SPDIF iPurifier Digital Optical Audio Filter
Post by Lon on 11/17/16 at 15:48:15

Indeed. PS Audio and Decware are a great combo in my two systems.

Title: Re: iFi SPDIF iPurifier Digital Optical Audio Filter
Post by Lonely Raven on 11/17/16 at 16:53:57

Also an option, that is out and has been working well for a while.

http://www.sonore.us/microRendu.html

It's Roon compatible, and basically allows your playback software to see it as a Network interface, and outputs USB to your DAC.

Almost like a PS Audio Bridge, but handles higher speed DSD, and is $700 vs the cost of the bridge.