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Ammonite Audio
18-05-2010, 06:38
I recently bought Lovejoy's HiFace USB audio adapter and after a bit of head scratching, managed to get it and Foobar working properly on my mid-spec HP laptop, running XP. Rich gave me a a few good tips, including using ASIO to bypass the XP audio controls.

Initially, I just ripped a familiar CD (Solveig Slettahjell's 'Silver') into Foobar, and then connected the laptop to my Lyngdorf digital amp using the same MIT Shotgun cable that I use for the CD transport. The sound that greeted me was considerably more colourful than the transport usually produces, with no apparent loss of other musical qualities. Time will tell, of course, but this is a promising start!

Fortified by that little experiment, I downloaded Carol Kidd's 'All My Tomorrows' from Linn in 24/96 FLAC. I own this album in both CD and vinyl and I like it, so it's a good reference. After a lengthy download, the laptop was connected up as before. Ye Gods! What clarity! What depth of sound and a total sense of ease! Unlike the CD version, I found myself listening much louder than usual because of the total lack of stress to the sound. I know that this particular album is not compressed in the normal pop sense, but in comparison to the 24/96 version, the CD does sound compressed and a little raw edged. I'm actually very surprised that the added bit depth can have such an effect on overall dynamics. The LP (an original ALOI issue) sounds slightly indistinct and comes very much second to the 24/96 version, but still more enjoyable than the CD.

So, I find myself converted to the idea of computer based audio; at least Hi-Res audio. I really don't know how the HiFace thing can be sold for so little money when it produces such a wonderful sound. It's also reassuring that, when fed the right quality digits, my Lyngdorf amp is truly stunning. I kind of knew that, since the A to D input card operates at 24/96, with very good results but the HiFace confirms that without doubt.

Out of curiosity, I loaded up Foobar, ASIO and the Carol Kidd album onto my little Advent Netbook (it's the MSI Wind underneath the logo). It worked, but the sound was not as interesting or absorbing as before - I assume that's because the FLAC conversion stretches the little Atom processor too far.

I will look for a sub-notebook that packs a reasonable punch at reasonable cost (also with a built in optical drive) - can anyone recommend anything that's really good value?

Ali Tait
18-05-2010, 07:39
Yes,the hi rez stuff is rather good isn't it,at least on well recorded stuff.It's what I'm spending the majority of time listening to on the Touch.Cd level stuff can still sound good,but to my ears does not give the depth of soundstage or sense of ease of a good hi rez.Closer to vinyl methinks.

Ali Tait
18-05-2010, 07:40
Good selection of 24/96 at the HDTracks website.

leo
18-05-2010, 07:49
Not bad little things at all, an easy cheap option of supplying the dac quality up to 24/192 recordings

roob
18-05-2010, 09:41
You should try JKeny's battery powered version.;)

purite audio
18-05-2010, 20:37
Or M2 Tech's own soon to be released 'evo'!

jkeny
25-05-2010, 01:25
I'm happy for anybody to evaluate my modified version against an 'Evo' or stock Hiface on a sale or return basis - let the customer evaluate the options themselves.

webby
22-07-2010, 11:10
You should try JKeny's battery powered version.;)

How is it usually powered?

jkeny
22-07-2010, 11:37
How is it usually powered?

From the USB 5V

webby
22-07-2010, 12:27
From the USB 5V

Doesn't it need to be plugged into a USB port? Forgive the daft questions

jkeny
22-07-2010, 12:30
Let me just direct you to a FAQ (http://sites.google.com/site/hifacemods/home/faq)which might answer all your questions?

webby
22-07-2010, 12:45
Thanks, um, er, what's yer name?

jkeny
22-07-2010, 12:46
Sorry, I'll put it in my sig, John

webby
22-07-2010, 12:48
Cheers for the link John.

Clive
22-07-2010, 12:54
Hi John,

Is there any feedback yet about how your conversion stacks up vs the Evo?

jkeny
22-07-2010, 12:59
Hi John,

Is there any feedback yet about how your conversion stacks up vs the Evo?

The Evo hasn't been released into the wild yet, AFAIK - I'm sure an opinion from me could be considered biased so I'll say nothing.

Clive
22-07-2010, 13:02
The Evo hasn't been released into the wild yet, AFAIK - I'm sure an opinion from me could be considered biased so I'll say nothing.
An opinion of what HiFace have done technically vs your conversion would be appreciated by myself at least! Of course you will be biased as would HiFace but your view would be of interest.

jkeny
22-07-2010, 13:26
Ok, I'll try to be as un-biased as I can :)

There is great flexibility in outputs/inputs with the Evo & they have also focused on the PS with external PS & the clock with external word clock input. All these options have to be evaluated for implementation rigour as this is where the devil is.

I don't know what regulators they have used internally but they do use regulators to knock down the external supply to 3.3V & 1.8V & whatever other voltages are needed by the various chips. As you know my modified Hiface uses LiFePo4 batteries for powering the critical clock & clock handling functions. The batteries have been independently tested against commercially available purpose built discrete regulators costing 3 to 4 times as much as the batteries & to well respected DIY regulators such as the PFM Flea - the batteries were found to be easily better sonically than any of these regulators. these tests were done on the AVCC supplies of a Sabre DAC (we all know how sensitive these are) & subsequently on the clock supply. In both instances the batteries out-performed the existing purpose built regulated PS.

roob
22-07-2010, 20:11
John
Why are customs confiscating HiFaces that are sent to you for modification?

jkeny
22-07-2010, 23:00
I PMed you!

Labarum
23-07-2010, 12:24
How much does this HiFace USB Thingy cost?

And how much for the mods? (Not that I think I might want the mods.)

webby
23-07-2010, 12:58
The HiFace is around £100. I don't know how much the mods are.

Labarum
23-07-2010, 13:11
This looks the better deal then

http://www.dolphinmusic.co.uk/product/15385-e-mu-0404-usb.html/?utm_source=google&utm_medium=shopping&utm_campaign=base

24/192 USB DAC complete for £150

Long thread here

http://www.computeraudiophile.com/content/24192-USB-20-beer-budget-EMU-0404-mini-review

roob
23-07-2010, 16:07
I PMed you!
Not received.

jkeny
13-09-2010, 23:35
New version of modified Hiface reviewed here http://tirnahifi.org/reviews/?page_id=193

Details here https://sites.google.com/site/hifacemods/home/mk2-boxed-hiface-1

Now contains internal battery charger & internal 5V supply. No power over USB connection is now needed. It sound a deal better, yet again!

jkeny
30-10-2010, 09:50
Check out the latest review in enjoythemusic for a comparison between Evo, Halide Bridge & my modified Hiface
http://enjoythemusic.com/magazine/equipment/1110/m2tech_hiface_evo_dac.htm