Hi-End S/PDIF Output Interface


Highest quality digital audio up to 192kHz/24bit S/PDIF audio format available from your PC or MAC Very low jitter oscillators and proprietary drivers Compact size (2x2.2x10.2cm) with hi-end performances hiFace USB interface has been conceived to obtain the highest quality digital audio signal using a PC or MAC. hiFace input format is a data stream signal with sampling frequency/resolution up to 192kHz/24bits, available from a PC or MAC USB port. A very high quality S/PDIF stereo audio output signal is available from hiFace for your Hi-Fi system DAC (Digital to Analog Converter). HiFace looks like a small USB pendrive, featuring a very compact size. Internal very low jitter oscillators and proprietary drivers allow for playing 192kHz/24bits audio files that feature the best signal quality.


1) LOW JITTER, LOW PHASE NOISE, HIGH STABILITY OSCILLATORS Most audio interfaces and USB-provided DACs refer the data stream clock to the same USB interface clock, that often suffers a very heavy jitter (short range oscillator frequency variations). Thanks to two quartz precision oscillators used on M2Tech hiFace, clock source for output data stream features a very low jitter. A more stable clock is recovered by DAC S/PDIF receiver; a low jitter produces a very limited sound image distortion and degradation. Phase noise (main responsible for jitter) is also very low: this guarantees a short and long range clock stability, also reinforced by a board supply voltage regulation (e.g. at environmental temperature stability is 2-5ppm approximately, compared to 50-100ppm performed by oscillators normally used on commercial CD players).
The standard audio drivers available on the market (e.g. Microsoft Windows operating system) dictated constraints can be overcome thanks to hiFace proprietary drivers: they allow for transferring audio data, maintaining the original file quality without any loss of resolution quality; also, sampling frequency constraints are overcome, while Microsoft and ASIO drivers oblige to operate at no more than 96kHz. When hiFace is used together with a player application such as FooBar (available for free on Internet), you can transfer S/PDIF stream music files to a D/A converter at 192kHz/24bits maximum frequency/resolution, avoiding undesired PC or MAC audio mixer data processing during the data transfer from hard disk to interface. Presently, Windows XP, Vista, Windows 7 drivers are available, as well as Mac drivers for 10.4, 10.5 and 10.6.
M2Tech hiFace features a very compact size and can be directly (or using an accessory USB A-A adapter, not supplied with hiFace) connected to a High Speed USB 2.0 port of any computer. A very high electric and mechanical performance RCA gold connector provides an output signal, ready to be connected to a Hi-End system. No external power supply is required, as hiFace draws its power from USB bus itself and regulates it with its internal regulators. hiFace USB interface connected to a last generation mini PC provided with a High Speed USB port makes for a complete music transport system at very low prices (in the range of few hundreds Euros). Such system allows for listening any density and resolution music files, playing own CD's using a CD ROM drive, obtaining access to more than 10,000 web radio, many of which broadcast their transmissions with CD quality.


Input 1 x USB A type male
Output 1 x RCA female
I/O Standard
Input USB 2.0 Format
Output S/PDIF Stereo Digital Audio Format
Sampling Frequency
44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4khZ, 192kHz
Resolution 16 up to 24 bit
Dimensions 10.2(d) x 2.2(h) x 2(w) cm
Power Supply 5V DC from USB bus
Temperature from 0°C to 70°C
Weight 50gr approx.



   User manual - English (PDF 2,1 MB)       hiFace user manual 1-0.pdf      updated 24.01.2011
   Manuale Utente - Italiano (PDF 2,1 MB)       hiFace manuale uso 1-0 italiano.pdf      updated 04.01.2012
   User manual - Japanese       http://www.m2tech.org/hiface.html      updated 19.04.2013


     Microsoft Windows Vista/7/8
(32 and 64 bit)
          win7vista103.zip      730.1 KB  updated 24.01.2011
     XP & 2003           xp103.zip      729.7 KB  updated 24.01.2011
     10.4 Tiger           Hiface1045104.zip      420.5 KB  updated 24.01.2011
     10.5 Leopard           Hiface1045105.zip      476.1 KB  updated 24.01.2011
     10.6 Snow Leopard
10.7 Lion
10.8 Mountain Lion
          HiFace1048106.dmg.zip      80.0 KB  updated 03.05.2011
     snd-usb-asyncaudio Linux compliant           github.com      updated 30.10.2012


     White paper on hiFace (PDF 125KB)           White Paper on hiFace.pdf      updated 24.01.2011


immagine JPG      www.6moons.com by Paul Candy 3/2010 (english)           hiface.html     
immagine JPG      Stereo n°8/2010 (dutch)           Stereo8-2010_1.jpg     
immagine JPG      Diapason 4/2011 (french)           hiFace Diapason 590 - Aprile 2011.jpg     
immagine JPG      Audio Review n°307 1/2010 (italian)           musica_liquida.pdf     
immagine JPG      www.enjoythemusic.com by Mike Galusha 2/2010 (english)           m2tech_hiface_usb.htm     
immagine JPG      Watch n°32 2010 (german)           Watch_32_078.pdf     
immagine JPG      Fidelity 2010 (danish)           kurt_lassen.pdf     
immagine JPG      Review by Dick van der Merwe 2010 (dutch)           M2Tech HiFace Vi-fi.pdf     
immagine JPG      MJ 5/2010 (japanese)           musen_jikkenn_5_P130.pdf     
immagine JPG      HiFiMusic 2010 (israelian)           M2TECH-hiFace-i148.html     
immagine JPG      ZDNet 5/2010 (dutch)           m2tech-hiface     
immagine JPG      What Hi-Fi Serbia 5/2010 (serbian)           What Hi-Fi Serbia May 2010.pdf     
immagine JPG      HiFi World 5/2010 (english)           Recensione HiFi world.pdf     
immagine JPG      GM2000 5/2010 (thai)           GM2000-Hiface.pdf     
immagine JPG      PCAdvisor 11/2010 (english)           www.pcadvisor.co.uk/reviews/index.cfm?reviewId=3250187     
immagine JPG      Positive Feedback n°51 9-10/2010 (english)           www.positive-feedback.com/Issue51/m2tech.htm     
immagine JPG      Applicando 9/2010 (italian)           Applicando 09-2010_1.jpg     
immagine JPG      Mundo Hi-Fi (spanish)           articulojitter.pdf