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#264157 2017-05-12 11:27
Joined: Oct 2009
Posts: 138
Hitchhiker
Hitchhiker
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Posts: 138
Hi,

I'm thinking of installing Roon on my Mac mini and store the FLAC music files on my (5 year old) QNAP.

I only have apodizing in the HD621, so which of the following will give the best audio quality?

1. Mac mini -> HD621 -> 568.2MM (with apodizing/ upsampling)
2. Mac mini -> Explorer 1 -> 568.2MM (via Toslink digital optical, no apodizing/ upsampling)

Thanks in advance for your help!

Regards,
Bob



861v4/ID40/LPSU, G55, HD621, 504
Wilson Benesch Square Five front, Square Centre & Square Two rear, Velodyne SPL-1200 Ultra
Mac mini, QNAP TS-219P II, Apple TV 4K, Marantz UD8004, Pioneer Kuro 500M isf
NBS Monitor IV cables
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President of the Imperial Galactic Government
President of the Imperial Galactic Government
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Roon will upsample any way you want it to, then you can send it to the Explorer as 176/192. That would be my choice.

(Can't say what Roon filter approximates most closely to Meridian's apodising, mind you. But someone else will be able to.)


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Sitting room: dCS Network Bridge, 818v3, HD621, 8kSE
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Harmless
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Hi Bob,

I would go the Explorer way as well. Roon is a very powerful program and you can set the Sample Rate Conversion to 96KHz (since 24bit / 96KHz is what the 568 can decode).

But if you have a toshlink and a HDMI cable you can try both and tell us your opinion.

Regards
George


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Senior Shouting Officer
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HD621 handles 24/192KHz input on HDMI and downsamples to 24/96 for 568.2MM so this might not be so clearcut as you may think.

Use a recent HS 10/18Gbit certified good quality HDMI cable and tell us your results. cool


DSP8000SE, DSP7200SEHC, DSP5200SE sides, DSP7200SE rears, 861v8, 210, Sim2 Ultranero 4, Stewart Cinecurve 2.35:1, XEIT CM-5E Anamorphic lens, Dune HD Duo Cinema 8K and Wireworld Platinum 48G HDMI -> UHD722 -> Shunyata Omega Ethernet. Shunyata/Furutech power-cables/filters. SR Master Fuse@861v8. Uptone Etherregen with 10MHz OCXO clock.
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President of the Imperial Galactic Government
President of the Imperial Galactic Government
Joined: Sep 2009
Posts: 5,358
Likes: 2
I missed the bit about Toslink, sorry. But I'd still use the Explorer.


Ex-moderator
Sitting room: dCS Network Bridge, 818v3, HD621, 8kSE
Library: dCS Rossini Apex DAC/Clock, Clearaudio Performance Wood, Audio Research PH2, Mjölnir KGST, Mjölnir PureBipolar
SWMBO Room: 210, D33
Kitchen: RPi/RoonBridge, Genelec 6010 actives
Desk: Merging Anubis
Server: Roon/ROCK/NUC

Headphones: Stax SR-X9000, Stax SR-007, Stax SR-404LE, Audeze LCD-X...

Oldest audio file: 1889 Edison cylinder
Joined: Jan 2004
Posts: 2,474
Likes: 18
Senior Shouting Officer
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If Roon eventually handles MQA decode/upsampling he can just set his Mac to HDMI audio 2ch 24/192 and skip the apodizing in HD621 and use the flavor he wants from Roon @24/192KHz.

Anyways, I'm interested in the results if you try this.


DSP8000SE, DSP7200SEHC, DSP5200SE sides, DSP7200SE rears, 861v8, 210, Sim2 Ultranero 4, Stewart Cinecurve 2.35:1, XEIT CM-5E Anamorphic lens, Dune HD Duo Cinema 8K and Wireworld Platinum 48G HDMI -> UHD722 -> Shunyata Omega Ethernet. Shunyata/Furutech power-cables/filters. SR Master Fuse@861v8. Uptone Etherregen with 10MHz OCXO clock.
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Vogon Civil Servant
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For me, if I used Roon, my set-up would be...

Mac Mini > Network > MS200 > SpeakerLink > AC12 > G95.

I already have a ReadyNAS for system backup.


Not an Actor, nor married to Jamie-Lee Curtis.

#1: DSP5200SE|DSW.2|218|210|506.2|504
#2: Prime/PSU|SOtM sMS-200 Mini NEO SE|Focal Stellia
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Ian Offline
President of the Imperial Galactic Government
President of the Imperial Galactic Government
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Why not just go MS200 to G95 via optical?


Meridian owner since 1992
Prime & PSU, Focal Elear headphones, Roon (ROCK 8Gi5 NUC), Explorer 1 & 2, F80. 200/203, various Sonos (via Roon).
Ian #264195 2017-05-13 11:23
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Vogon Civil Servant
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Comms, and Coax.

I already have the AC12.


Not an Actor, nor married to Jamie-Lee Curtis.

#1: DSP5200SE|DSW.2|218|210|506.2|504
#2: Prime/PSU|SOtM sMS-200 Mini NEO SE|Focal Stellia
#3: Other stuff
Joined: Aug 2004
Posts: 7,950
Likes: 19
Ian Offline
President of the Imperial Galactic Government
President of the Imperial Galactic Government
Joined: Aug 2004
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Likes: 19
Ah yes, comms although for anyone else without an AC12, optical and comms only dongle would be a very cost effective method especially as anyone even with basic soldering skills and good eyesight could make one with for a few quid.


Meridian owner since 1992
Prime & PSU, Focal Elear headphones, Roon (ROCK 8Gi5 NUC), Explorer 1 & 2, F80. 200/203, various Sonos (via Roon).
Ian #264220 2017-05-13 17:53
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Vogon Civil Servant
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I don't have good eyesight (far from it).


Not an Actor, nor married to Jamie-Lee Curtis.

#1: DSP5200SE|DSW.2|218|210|506.2|504
#2: Prime/PSU|SOtM sMS-200 Mini NEO SE|Focal Stellia
#3: Other stuff
Joined: Oct 2009
Posts: 138
Hitchhiker
Hitchhiker
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Posts: 138
Thanks for your help guys!
Will let you know the results.

Cheers,
Bob


861v4/ID40/LPSU, G55, HD621, 504
Wilson Benesch Square Five front, Square Centre & Square Two rear, Velodyne SPL-1200 Ultra
Mac mini, QNAP TS-219P II, Apple TV 4K, Marantz UD8004, Pioneer Kuro 500M isf
NBS Monitor IV cables

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