2. pc-audio
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Computer audio, I am not convinced yet ......

I am extremely interested in using the computer (Mac or PC) as a source for a digital playback. It seems to be the right direction for modern digital playback, a good alternative to the age old CDP, has endless potential and most convenient. So, I got an EMM DAC2 (retail $10000) with USB input and connected it to an Windows laptop via USB. My preamp, amp, speakers and cables are also of very good quality. Played some track on my system from the PC (used Audacity software, a very good and high quality software for sound processing). In 2 minutes I had to turn it off. It is just mediocre sound compared to playing the same track through a $1000 CDP(Sony SCD XA5400ES). It is almost like listening to an internet-radio through my PC speakers. I was wondering what happened to my first rate sound system ? Later I replaced the Windows PC with a Linux based MacMini, hoping that I will get the result I wanted. But it did not improve much. I did not like the outcome. My listening experience with the computer set up was 4 minutes(2 with PC and 2 with Mac) total. Since then I have gone back to using the same old CDP. I think I blame on the USB interface for this failure. The USB interface has not come up to the state of the art of a modern CD player. I did not try other interfaces purposely. No High-Res, only 16bit/44.1 audio files. I dont listen to SACD. Fire Wire to USB, USB to SPDI/F, Fire wire to HDMI, Firewire to SPDI/F, and almost an infinite combinations of patch up ideas are out there. But I dont like a patch up solution nor do I like to compromise the sound in favor of convenience.

I have heard many audiophile friends changed to computer based playback system many years ago for good and they are happy too. But I am not convinced yet. I am eagerly waiting for computer audio to catch up. I am sure it is in the making but it still has to go quiet a long distance.

Your thoughts are most welcome.
topmostaudio
audioengr
3,282 posts
 
"Can you also mention some other high quality USB converter ? "

Diverter HR
Berkeley

"What is the best quality power supply to go with it ?"

Modified Hynes SR3-12

"A USB converter and then the DAC ?"

Yes, plus a good S/PDIF cable. You can get really good one for only $250.

"Also a DAC with high quality USB input and a high quality volume control will be my preference !!! Is there any such thing in the market which will outperform my Sony SCD XA-5400 ES player ?"

Easily, but the separate USB converter on its own power and DAC is still better.

Overdrive SE or Metrum Hex DACs should do the job on their own.

Steve N.
Empirical Audio
audioengr
3,282 posts
 
"good question, why must be USB ?"

If you want to not only beat, but exceed the performance of the very best CD transports/players, you will need to use USB, and not just any USB. You will also need to use a good computer platform and playback software. It is not rocket-science. Its just like buying a Vinyl or CD system. Separates will always sound better. A preamp and amps will beat an integrated. A transport and DAC will beat a CDP.

Look at the systems that get best of show at CES, RMAF and Newport. Most use USB.

Steve N.
Empirical Audio
spectron
130 posts
 
Topmostaudio: I believe your comparison between regular computer and music server (where you should not be able to run your 3D graphics) is correct.

" It [music server] will be an alternate transport which happen to use some processor and useless outside audio application"

Here I am not sure I unerstand it. Most even household electronics carry some processor so by itself its presence means nothing to me. "Useless" outside audio applications??? ...Depend what they are and how well they do their assigned job.

Audioeng: Indeed, most DAC manufacturers add cost effective USB interfaces which are not always the best! Stand-alone USB inteface make sense for me ONLY if it outputs I2S (not SPDIF !!!) but even fewer I2S inputs vast majority of DAC's have.

I would add only that very high quality stand-alone interface cost a lot. It could be much cheaper if USB output from a music server will be well designed and well executed, if music server designer would asume that USB DAC input is mediocre and do THE RIGHT JOB on the side of music servers. Not super easy but...possible

Of course, not all music servers and not all stand-alone USB interfaces are made equal...this why we do have EARS
;--)
Simon
topmostaudio OP
28 posts
 
Simon, I was referring to a computer of some sort with a CPU as in a normal computer, but the computer is designed for audio and thus will be extremely costly yet not usable as a normal computer.

I can see very clearly that with the on set of this so called computer audio, a new type of device called "interface converter" is going to find its importance in the audio system much like a preamp found its position in interconnecting various sources to an audio system previously.

So, the audio chain with a computer will look like the following:
Computer => Interface Converter => DAC => Preamp => Amp => Speaker.
Previously it was
CDP/TT => Preamp => Amp => Speaker. OR
Transport => DAC => Preamp => Amp => Speaker

This new component "Interface Converter" will convert various digital Interfaces (I2S/HDMI/USB/FireWire/SPDIF/TOSLINK) => Analog or
one form of digital => another form of digital signal.

The quality of this conversion will dictate the quality of the system sound. Better the conversion quality better is the isolation between a mediocre computer HW and a high end audio system.
mrmb's avatar
mrmb
299 posts
 
I really like the "internet radio through my PC speaker sound” that I'm obtaining from my CAT amps and Soundlab M1PX speakers.

Gesh, generalization about interfaces and suppositions about a technology not yet being mature enough, are just that suppositions and generalizations. In my PC audio experience (as well as audio experiences in general), I've found that these 2-words define conclusions that always prevent one from making really wonderful discoveries.

Based on my satisfaction with the present status of computer audio, perhaps I fell into PC Audio trough that contained the only good hardware, but that’s simply not the case!

PC audio and the USB interface are as mature as any other high-end audio playback chain – e.g., box vs open baffle speakers, planars, horns, active/passive preamps, no preamps, vinyl, M/M vs M/C cartridges etc….. Will advancements be made in each of these audio niches, you betcha. Should one put off buying one of these niches, because they’re not yet mature enough, no.

Years ago I moved from a Wadia 861 CDP to computer audio and haven't missed a thing sonically. My first USB DAC was a Wavelength Brick Silver. My present DAC is a Wavelength Crimson.

In my system, high definition files (96/24 and above) sound extremely close to vinyl which is being spun on a Galibier turntable, Tri-planar tonearm and a Dynavector XV1s cart. So, from that standpoint, my audio buddy's systems and from many of the rooms at 2012's RMAF, great digital audio (and yes, USB derived) can be had with a little effort and not as much gnashing of teeth as some think, or would have you believe.

With an external HD, a Mac mini, PureMusic, and an iPad, I’m enjoying the heck out of my setup and 28,000+ tracks – redbook and HD’s.

From my current and obvious audio standpoint, my past, present and future state-of-the-art audio software is USB PC audio and vinyl.
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