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Renderer of Choice?
23-06-2016, 20:44
Post: #11
RE: Renderer of Choice?
I auditioned several renderers (all ethernet-to-SPDIF functionality) before buying one - Cyrus, Naim and Krell which were available in the UK. I heard differences: I felt the Krell was best, closely followed by the Naim with the Cyrus a poor 3rd. I bought a Sonore Rendu unheard and found it as good as the Naim and Krell, and less expensive. I recently replaced my DAC with one that had an on-board renderer - the PS Audio DirectStream DAC fitted with the Bridge 2 board. (I've just updated the firmware to the latest version with a concomitant jump in sound quality - it was already excellent!)

The basic Rendu is no longer available from Sonore and the replacement Signature is much more expensive, so I can see the attraction of the relatively inexpensive microRendu, however I do wonder whether using USB output rather than SPDIF or I2S can compromise sound quality by reducing the isolation from power- & earth-borne interference. I found that by putting optical isolation in the last leg of the ethernet connection to the renderer/DAC I got a small but worthwhile improvement in sound quality.

System: ALAC iTunes library on Synology DS412+ running MinimServer > Airport Extreme bridge > Optical isolation > PS Audio DirectStream DAC with Bridge II renderer (controlled by Nexus 7 tablet running BubbleUPnP) > Primare A60 > Harbeth SHL5plus
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24-06-2016, 04:46
Post: #12
RE: Renderer of Choice?
(23-06-2016 20:44)DavidL Wrote:  ...I can see the attraction of the relatively inexpensive microRendu, however I do wonder whether using USB output rather than SPDIF or I2S can compromise sound quality by reducing the isolation from power- & earth-borne interference. I found that by putting optical isolation in the last leg of the ethernet connection to the renderer/DAC I got a small but worthwhile improvement in sound quality.

Thanks for your detailed response.

How are you optically isolating the Airport Extreme-to-PS Audio connection?
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24-06-2016, 15:43
Post: #13
RE: Renderer of Choice?
(24-06-2016 04:46)krutsch Wrote:  How are you optically isolating the Airport Extreme-to-PS Audio connection?

I picked up details from a blog by Andrew Everard here:
https://andreweverard.com/2015/06/08/hig...ded-fibre/
(I think I may have quoted this earlier in another MinimServer thread)

The cost of 2 back-to-back ethernet-to-fibre converters with a 1m (say) stereo pair of fibre and 2 linear power supplies is low. If you read through this thread you will find a complete parts list. One thing to note: as pointed out in the thread some renderers cannot accept Gbps ethernet rates (e.g.. some Naim and Sonore boxes) so require 100/1000 converters. I'd advise checking this for your renderer.

When asked why renderers were designed with this "limitation" Sonore said that having Gbps streams around could compromise sound quality by introducing RF interference.

System: ALAC iTunes library on Synology DS412+ running MinimServer > Airport Extreme bridge > Optical isolation > PS Audio DirectStream DAC with Bridge II renderer (controlled by Nexus 7 tablet running BubbleUPnP) > Primare A60 > Harbeth SHL5plus
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01-05-2017, 23:01
Post: #14
RE: Renderer of Choice?
Simple ethernet wired Sony STR-DN850 7.2 Receiver, very happy with the sound quality.

Ubuntu Server 16.04.2 LTS
BubbleUPnP on Nexus 5 and Nexus 7
Sony STR-DN850 renderer
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