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DoubleAA

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  1. Yeah, that was the goal. And honestly, I think you might be right, though I'm still befuddled by what experiments I ran. In the end, it has become moot for me - my good friend thinks I'm crazy with my 24/96 fetish (and maybe he's right...), and has offered to take the DAC off my hands. So problem solved. I think the key thing here is, Music Hall does not advertise their input specs and one must not assume just because it can upsample to 24/96 that it can accept it. The good thing is I found this site - and there's a lot more going on now then when I first discovered it sometime ago. Clearly, MUCH more research is in order for me, but some of the pro gear I hear discussed has opened up new avenues of research for me. Thanks to all those who provided input on this 'issue'. Aaron
  2. I see where you're coming from but...I'm more perplexed now as I'm not convinced my computer is not the issue. Yes, jitter could be an issue, but, I just want to see if the 25.2 will play any 24/96 files... My experiment: In my DVD player, I set the output to PCM and I could set the frequency (dvd player upsamples) to 48, 96, or 192. Playing redbook CD via coax/spdif: plays at 48, 96, 192 from the player with a lock. Playing redbook CD via optical: plays at 48, 96, 192 from the player with lock. Yo can imagine my bewilderment. Not convinced my DVD player is doing what it says (or maybe defaulting to 48 (no 44k setting)), I do manage to burn one track of 24/96 file. I confirmed prior to burning it was a 24/96 wav file. I burned this disc, and tried this with both the outputs: coax/spdif: plays at 48, 96, 192 - upsample button on 25.2 works at 96 and 192 settings. optical: plays at 48, 96, 192 - upsample button only works at 96, not 192. Is it the macbook pro that's the issue? Incidentally, I tried a new macbook (unibody) and, with the same adapter I use on my mbp, I could not get ANY sample rate to play on the 25.2 (my HT receiver works just fine). My mbp immediately worked at 44 and 48 (as before) but not 96. If the computer is potentially the issue, then one of the aforementioned USB adapters might be needed even if I ended up with another DAC. Logically speaking, I should be able to use a firewire 'sound card' with digital out (kind of like Andrew mentioned above, sans DAC...if they exist) and it should work. So....any thoughts on what this means? Yes, I'm screwing around more than I wanted to, but...since I have the equipment on hand, and if I can help even 1 other person from going through this...I'd like to get this to work. Aaron
  3. Thanks for the welcome! My dealer emailed me and indicated that he spoke to Music Hall who said that the spdif would work with one of those USB adapters I mentioned. But now I am utterly confused. The BelCanto has a spdif/coax out, but the MAudio has an optical out. My tests via my mac and the email from Music Hall indicates that the optical cuts out after 48khz. Here's where things get confusing. I hooked up my DVD player which I can set the LPCM output to 48/96/192. When I switch while playing a normal CD, I here clicks and the sound is different making think the device is switching/upsampling. When I hooked this up via the spdif coax to the DAC 25.2, I would get the 'lock' light (only) on, and regardless of it being 48/96/192, the DAC continued to perform. I thought this was it! Then, since I don't know for sure that it is outputting what it says, I used the optical output of the DVD player into the DAC. ALL of the frequencies worked and the light stayed on 'lock'. Sooooo.....is this a mac thing or is my dvd player not doing what it says? The M-Audio device uses a driver in OSX so maybe it is a deficiency of the mac (though the BelCanto does not). Thoughts? This is getting beyond frustrating! I'm trying to burn a 24/96 DVD-A from one of the FLACS and then play that on the DVD player (which then I know I'm starting with a redbook cd which maybe the DVD player locks at 44/48.... Aaron
  4. I just received my Music Hall DAC 25.2 and am seriously thinking of returning it (if I can't get this figured out). Via USB and/or toslink, I am only able to send upto a 48khz signal to the 25.2. I have a number of vinyl rips at 24/96 and the DAC just turns off the lights (and the sound) on the face when I feed it a 96khz signal. This is on my MacBookPro, output sample rate to 24/96 in Audio Midi Setup. No sound enhancer and I am not using Itunes (since my files are FLAC). I sent an email to Music Hall and Roy Hall actually replied (props to them as a company there) with: The USB can only handle 48/16. The optical input is 48/24. It is not designed for higher frequencies. He does not mention the spdif. The dealer I purchased from suggested I try a Bel Canto or M-Audio USB adapter device. This allows USB to handle 24/96 signal and appears to output it on the spdif (RCA). The BelCanto is ~$500 (no way!) and the M-Audio is ~$100. I'd get the M-Audio if I knew it would work. I bought this DAC specifically to play my 24/96 collection. I have an awesome, upsampling CDP, but was ready (and still am) to go the full computer route. I'm going to attempt to get the spdif/coax input working with something and see if I can confirm what it's max input sample rate is. Incidentally, I've searched the net (which is what led me here to sign up) and the manual and the Music Hall web site and can find NO info on the input sample rate. Benchmark says it and a few others. I've been livid for two days now with this as it's a PITA to send it back... Aaron
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