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#264157 - 2017-05-12 12:27 HD621 vs Explorer
Bobfett Offline
Hitchhiker

Registered: 2009-10-16
Posts: 123
Loc: The Netherlands
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

_________________________
568.2MM, 558, 504, HD621, Mac mini, Wilson Benesch Square Two front & rears, Wilson Benesch Square Centre, Velodyne SPL-1200 Ultra, Marantz UD8004, Pioneer Kuro 500M isf, NBS Monitor IV cables

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#264162 - 2017-05-12 14:09 Re: HD621 vs Explorer [Re: Bobfett]
Ludwig Offline
President of the Imperial Galactic Government

Registered: 2009-09-13
Posts: 5295
Loc: Europe
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.)
_________________________
Ex-moderator
Sitting room: 818v3, 8kSE
Office: 818v3, Stax SRM-T1, Stax SR404LE
TV room: HD621, 518, D33
Kitchen: MS200, Genelec 6010 actives
Server: Roon/NUC/Touchscreen

Oldest audio file: 1889 Edison cylinder

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#264167 - 2017-05-12 17:06 Re: HD621 vs Explorer [Re: Bobfett]
Sailor2004 Offline
Harmless

Registered: 2004-10-17
Posts: 18
Loc: Thessaloniki, Greece
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
_________________________
HOME THEATER: Meridian(861v4,ID40),JVC HD750,M.Logan (SL3,Clarity),PS3,PanasonicDMR-EH68,Oppo95,CinenovaAmp, HivionHD Sat, KD8x8 4K HDMI switch

LIVING ROOM: Meridian (G61RSL,G55,504,Ensemble,C15), QnapTS-870PRO, Epson 5900, Panasonic TX-P50V10, M.Logan Electromotion, iPadPro, Popcorn A300, iPod Classic, Russound (Multi Room), AppleTV, AMX, Roon

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#264177 - 2017-05-13 01:43 Re: HD621 vs Explorer [Re: Sailor2004]
Crion Offline
Senior Shouting Officer

Registered: 2004-01-12
Posts: 2253
Loc: Stockholm, Sweden
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
_________________________
Future ID80 with video owner!
DSP8000SE, DSP7200SEHC, DSP5200SE sides, DSP7200SE rears, 861v8/ID41, MC200, Sim2 HT380 T2 1080P, Stewart Cinecurve 2.35:1, XEIT CM-5E Anamorphic lens, HDI Dune BD Prime 3.0 with Wireworld Platinum HDMI -> HD621 -> Audioquest Diamond RJ45. Shunyata Sigma Digital@861v8.

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#264183 - 2017-05-13 07:24 Re: HD621 vs Explorer [Re: Crion]
Ludwig Offline
President of the Imperial Galactic Government

Registered: 2009-09-13
Posts: 5295
Loc: Europe
I missed the bit about Toslink, sorry. But I'd still use the Explorer.
_________________________
Ex-moderator
Sitting room: 818v3, 8kSE
Office: 818v3, Stax SRM-T1, Stax SR404LE
TV room: HD621, 518, D33
Kitchen: MS200, Genelec 6010 actives
Server: Roon/NUC/Touchscreen

Oldest audio file: 1889 Edison cylinder

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#264191 - 2017-05-13 09:50 Re: HD621 vs Explorer [Re: Ludwig]
Crion Offline
Senior Shouting Officer

Registered: 2004-01-12
Posts: 2253
Loc: Stockholm, Sweden
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.
_________________________
Future ID80 with video owner!
DSP8000SE, DSP7200SEHC, DSP5200SE sides, DSP7200SE rears, 861v8/ID41, MC200, Sim2 HT380 T2 1080P, Stewart Cinecurve 2.35:1, XEIT CM-5E Anamorphic lens, HDI Dune BD Prime 3.0 with Wireworld Platinum HDMI -> HD621 -> Audioquest Diamond RJ45. Shunyata Sigma Digital@861v8.

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#264192 - 2017-05-13 11:13 Re: HD621 vs Explorer [Re: Crion]
spinaltap Offline
Knows where his towel is

Registered: 2003-10-04
Posts: 1782
Loc: Bournville, UK
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.
_________________________
My Mac can go all the way to XI

Meridian owner since 1994 - Mac user since 1988

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#264194 - 2017-05-13 11:51 Re: HD621 vs Explorer [Re: spinaltap]
Ian Offline
President of the Imperial Galactic Government

Registered: 2004-08-07
Posts: 7194
Loc: Surrey, England, UK
Why not just go MS200 to G95 via optical?
_________________________
Meridian owner since 1992
DSP5000 96/24, MC200, Prime & PSU, Focal Elear, Explorer 1 & 2, F80, 200/203 and various Sonos.

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#264195 - 2017-05-13 12:23 Re: HD621 vs Explorer [Re: Ian]
spinaltap Offline
Knows where his towel is

Registered: 2003-10-04
Posts: 1782
Loc: Bournville, UK
Comms, and Coax.

I already have the AC12.
_________________________
My Mac can go all the way to XI

Meridian owner since 1994 - Mac user since 1988

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#264210 - 2017-05-13 16:53 Re: HD621 vs Explorer [Re: spinaltap]
Ian Offline
President of the Imperial Galactic Government

Registered: 2004-08-07
Posts: 7194
Loc: Surrey, England, UK
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
DSP5000 96/24, MC200, Prime & PSU, Focal Elear, Explorer 1 & 2, F80, 200/203 and various Sonos.

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#264220 - 2017-05-13 18:53 Re: HD621 vs Explorer [Re: Ian]
spinaltap Offline
Knows where his towel is

Registered: 2003-10-04
Posts: 1782
Loc: Bournville, UK
I don't have good eyesight (far from it).
_________________________
My Mac can go all the way to XI

Meridian owner since 1994 - Mac user since 1988

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#264567 - 2017-05-23 12:49 Re: HD621 vs Explorer [Re: spinaltap]
Bobfett Offline
Hitchhiker

Registered: 2009-10-16
Posts: 123
Loc: The Netherlands
Thanks for your help guys!
Will let you know the results.

Cheers,
Bob
_________________________
568.2MM, 558, 504, HD621, Mac mini, Wilson Benesch Square Two front & rears, Wilson Benesch Square Centre, Velodyne SPL-1200 Ultra, Marantz UD8004, Pioneer Kuro 500M isf, NBS Monitor IV cables

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