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Thread: Amarra/iTunes question
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04-10-2012, 10:54 AM #1
Amarra/iTunes question
Hi,
First post here and a bit of a Computer Audio(phile) noob, slowly being weaned off vinyl, or at least becoming a lot more open minded!
My current setup is using a MacMini as my audio server, driven by iTunes. The MacMini outputs optically straight into my AV Receiver for now (DAC questions will come later no doubt).
The colourful comments regarding Amarra notwithstanding, I thought I would give it a try so now have a trial version installed. I am not sure my question related to iTunes setup or Amarra setup but I was hoping someone can help me with the following.
I downloaded a piece of music from Blue Coast Records and it is now sitting in iTunes. "Get Info" tells me that it is 192.000 khz and 24 bit. When I play it, however, Amarra tells me it is 44100. I don't think iTunes can play 192k files but I understand it is capable of 96k so was wondering what in my setup needs tweaking. In Audio Midi, if I set it manually to 96.000 hz, Amarra shows 96000 until the next time I play a lower resolution piece, at which time it reverts to 44100, and doesn't show the higher rate until I manually set it back.
I am very sure I am doing something stupid, but it would be good to know what!
Help and/or advice appreciated.
Thanks
Marc
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04-10-2012, 11:11 AM #2
Hi Marc -
Welcome to the MadHouse!

Did you check to be sure your AVR digital input can accept 96kbs input? Most can, but some - well some cannot.
Open up the Audio Midi Setup application (found under Applications -> Utilities) and example the output device you are using. There should be a "format" drop down box with a range of sample rates. Make sure that it goes up at least to 96K.
iTunes will playback music up to 384k sample rates, but will resample the music down to whatever you have set in the Audio Midi Setup for the device. Amarra will catch that device and set the device sample rates to match the music file sample rate. Or rather, it does when it is working correctly.
-Paul
Main Music: AIFF Library -> Mac Mini i5 (Late 2012) -> MacOS 10.8.3 -> JRMC 18 -> Siltech Optical -> Jolida Tube DAC II -> Parasound M2100 Preamp -> Outlaw Audio M2200 Monos -> Nodost Flatline MKII Speaker cables -> PSB Synchrony 1Bs on 36" stands
Vinyl -> Audio Technica LP120 w/ AT440MLa cart installed -> Phono input on Parasound M2100
Video -> NAD 557 Bluray + Apple TV 3g -> NAD T747 -> Preouts -> Parasound M2100 HT Bypass -> same as music
Bedroom -> Macbook Pro -> JRMC18 -> Peachtree DAC*IT -> NAD B33326 -> PSB Imagine Bs
Office -> Mac Mini i5 -> Amarra -> Kimber USB -> Wavelength Proton -> Creek e50 -> Maggie MMGs
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04-10-2012, 11:54 AM #3
Hi Paul,Thanks for the
Hi Paul,
Thanks for the speedy reply! The receiver, a Yamaha RX-V2700 says it accepts 96/24 signals. The format dropdown in Audio Midi setup is what I was referring to when I said I set it "manually", ie I selected 96000, the maximum under Digital Out.
That all said, for some reason it seems to be working now, Amarra is correctly reflecting the sample rate for each track, be it 44100 or 96000.
Not sure about Amarra though, it is very expensive. I need to do some serious listening with and without it on. Reminds me of all the "serious listening" I have done over the years comparing CD to Vinyl!
Thanks again
Marc
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04-10-2012, 12:09 PM #4
Amarra vs. "the other guys"
(grin)
Well, Amarra is my reference sound, as I like it the most. On the other paw, I find that on the Macs I use iTunes straight for most redbook (16/44.1K) material. There are many other players to audition too.
Pure Music ($129) - top competition IMO for Amarra. Sounds just as good, if a little different, has far more options to customize it just the way you like, and does some really advanced things. Have to use it to believe it.
Bitperfect (Apple App Store) $5 - great sound, great support here from teh developer and if nothing else, it will auto switch the sample rate and bit depths for you in iTunes. It is a good investment.
Audirvana (~$45) - well regarded by most here, a lot of people think it sounds like Amarra.
Decibel (~$40) - also well regarded here by many. I like the way it sounds, but miss the iTunes interface too much to use it as a primary player.
Fidelia (~$40 to ~$80, depending upon options) - some here prefer it above all others. I actually like the pacing from this software very much. There are some user interface issues, and who knows when or if they will ever update it?
Take your time and try them all. They all have free trials I think, except for BitPerfect, and at $5, it is a pretty safe investment.
-Paul
Main Music: AIFF Library -> Mac Mini i5 (Late 2012) -> MacOS 10.8.3 -> JRMC 18 -> Siltech Optical -> Jolida Tube DAC II -> Parasound M2100 Preamp -> Outlaw Audio M2200 Monos -> Nodost Flatline MKII Speaker cables -> PSB Synchrony 1Bs on 36" stands
Vinyl -> Audio Technica LP120 w/ AT440MLa cart installed -> Phono input on Parasound M2100
Video -> NAD 557 Bluray + Apple TV 3g -> NAD T747 -> Preouts -> Parasound M2100 HT Bypass -> same as music
Bedroom -> Macbook Pro -> JRMC18 -> Peachtree DAC*IT -> NAD B33326 -> PSB Imagine Bs
Office -> Mac Mini i5 -> Amarra -> Kimber USB -> Wavelength Proton -> Creek e50 -> Maggie MMGs
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04-20-2012, 11:37 AM #5
Amarra/iTunes question
Hello Marc,
The issue that you are running into is the optical out on your Mac is limited to 96k sample rates. Anything above that (176k, 192k, 352k, 384k) will be handed off to iTunes for processing as Amarra does not do any real time up or down sampling. Our feeling is that real time sample rate conversion results in non bit-perfect, inconsistent output and recommend doing any sample rate conversion offline through the use of Amarra's Background Manager or other such utility.
Once you down sample your 192k files to 96k, you should have no problem playing them through Amarra and you will not need to manually set your DAC to any sample rate, Amarra will do that for you.
Once you get a DAC that supports 192k via either USB or Firewire, you should have no issue playing your 192k files.
If you have any other questions, please direct them to support@sonicstudio.com
Thank You, Sonic Support[br]support@sonicstudio.com[br]__________________[br]Sonic Studio, LLC .:.[br]__________________[br]
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04-20-2012, 11:55 AM #6
neildm, the response from
neildm, the response from Sonic Studios in furtherance of helping you sort out your inquiries might be enough to explain the present results. For me, as someone who owns all of the players, which is not a distinction other than I own all of the players, my player of choice is Amarra. If you find that Amarra is not delivering the SQ you desire that is another criteria. I am also one to appreciate what Tim, Damien and Rob have developed that for many answer their preferences. Isn't that a good outcome?
Full Disclosure: I am a beta tester for both Amarra and BitPerfect, and I appreciate all the players. My player of choice is Amarra. No incentive to do so, other than my own subjective discernment. You probably can find any of the other truly fine software players satisfactory. I rate Amarra number 1 with all its thises and thates. I do so not blindly as some fanboy, but as someone who values the pursuit of excellence and while all the other players fit that description, the nuances for me favor Amarra. That conclusion must always be yours to determine.
Best,
Richard
Software: Mountain Lion, iTunes, Amarra Symphony, Audirvana Plus+, BitPerfect, Decibel, Fidelia, Pure Music; Computer: Mac Mini (2011, 2.7 GHz Intel Core 2 Duo i7, 16GB, int. SSD 256GB; Video: 27" Cinema Thunderbolt Display; Storage: Promise Pegasus 12TB Raid 5; Digital: Oppo BDP-95/93/83SE; Wyred 4 Sound DAC2, Atlona AT-HD577; Preamplification: Wyred 4 Sound STP-SE; Amplification: W4S SX1000 (x2); Bryston 10B Sub LR 50Hz, 24dB/Octave/2-way active crossover; Speakers: KEF Reference 107; JL Audio F112 x 2 set to mono; KEF X300A; Cables: Synergistic Research: Tricon USB, Tesla LE Acoustic Reference & Precision Reference XLR ICs, Tesla LE Acoustic Reference speaker cables, Tesla LE Subwoofer 2 cables, QLS9 & T2 power cable; Black Cat Veloce 75 ohm; DH Lab Silver HDMI 1.4; W4S P1 Ultra Power cables, DH Labs Power Plus AC Cable; Shunyata Venom 3.
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04-22-2012, 01:38 PM #7
Thank you so much for all the responses guys, this is invaluable help.
I should explain a little more about my environment and would welcome any comments or advice on the setup before I start investing any cash in the wrong direction.
I have three listening "zones", my living room, bedroom and kitchen, sound distribution is controlled by a Crestron controller (irrelevant to this discussion). My music in on my Mac Mini. For music in the living room I take the optical out of the Mac Mini into an AV Receiver (Yamaha RX-V2700) and from there to my living room speakers (fairly decent B&W's). For the bedroom and kitchen, I am using a USB output on the Mac Mini into this cheapo Maplins DAC and from there two RCA cables run to two Rotel amps powering ceiling speakers in bedroom and kitchen. Some clever Crestronny stuff handles the switching of the Mac's audio outs so that I don't have to do it manually every time I want to listen to a different zone.
I guess my question is, where should I focus any upgrade attention? Clearly the DAC could be better, but how about something like a HiFace adapter from the MacMini's USB port into the Maplins DAC? Is that like running a Linn Sondek into a boombox?
Help on the above and any other comments would be very welcome indeed.
Thanks again
Marc
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04-23-2012, 03:16 AM #8
Apologies for the above post, I realise it is in the wrong forum. I had forgotten my original reason for posting!
I will repost in the appropriate forum.
Thanks again
Marc



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