Le topic des DAC

[MrButchi]

Le Schiit Bifrost Multibit et son upgrade correspondante pour le Bifrost tout court sont sortis aujourd'hui !

[cocolinho]

miam! si les retours sont bons je ferais l'upgrade

[MrButchi]

Apparemment il y a un centre d upgrade en Europe. Les plus aventureux peuvent aussi essayer tous seuls d après le site..

[cocolinho]

ah non, c'est pas ce que dit le site de schiit...car il y a de la reprog

[kazcou]

Avec le coût de l'envoie et de la main d’œuvre, est-ce que ça vaut vraiment le coup de l'upgrader ?

[MrButchi]

[cocolinho]

For this upgrade, your Bifrost needs to have its motherboard firmware updated by us, or by an authorized service center such as Electromod in the UK. This requires a specific programming device with an RJ12 connector, as well as software. Because of this, there is no self-install option, sorry

[MrButchi]

his DAC/Analog upgrade card betters the sonic and measured performance of all previous Bifrosts, including Uber. It incorporates the AKM AK4490 Veritas D/A converter, followed by a sophisticated fully discrete summing and gain stage with no capacitors in the signal path.


This upgrade does not require firmware changes, so it can be installed by experienced technicians.

Schiit Scheduling System Reduces Upgrade Time
Schiit can install the Bifrost 4490 board for you, with a convenient scheduling system that allows you to keep your Bifrost until we’re ready to turn it around immediately. Just place your order, and follow the steps in the series of emails. You’ll be notified when your order is accepted, when to send in your DAC, when the work is performed, and when it’s shipped back to you, for complete transparency.

Other Installation Options
If you’re an experienced electronics technician or engineer who is familiar with ESD precautions, or work with a good tech, you can choose to have the Bifrost 4490 board sent to you directly, fully tested and protected in an antistatic bag.

Please note that by selecting this option, you are saying, "Yes, I am, or know, a competent electronics technician who does not need hand-holding for this installation, and I will not allow an inexperienced person to perform the upgrade, since I understand there are no user-serviceable parts inside."

[MrButchi]

Le site se contredit
Ceci dit pour gagner 30€...

[cocolinho]

Tu parles de l'upgrade uber je crois. Pas du multibit

[MrButchi]

Peut-être (je veux pas faire mon têtu). Mais le copy paste vient de la page Bifrost 4490, qui est bien l'upgrade MB non ?

[flying baboon]

Non le MB c'est du AD5547 apparemment, le 4490 semble être l'Uber.

Mais ça ne change rien, c'est bien précisé qu'il faut passer par Schiit :

his upgrade changes any existing Bifrost or Bifrost Uber into Bifrost Multibit, a radically different DAC using the medical/military grade AD5547 D/A converter and Schiit’s proprietary closed-form, time- and frequency-domain optimized digital filter.


For this upgrade, your Bifrost needs to have its motherboard firmware updated by us, or by an authorized service center such as Electromod in the UK. This requires a specific programming device with an RJ12 connector, as well as software. Because of this, there is no self-install option, sorry.

[MrButchi]

I'm a moron. Toutes mes excuses

[corderaide]

Maître Salupe, vous êtes au courant que vous aviez déjà pris du sursis la semaine dernière..? Ne vous avisez pas de rejouer avec les limites...
*jette un regard mèche-lunettes, avant de s'engouffrer dans un tunnel de RER"
***solo de piano***

COUPEZ ! C'est bon, elle est dans la boîte !

[kazcou]

Audiolab va sortir (fin février ?) leur nouveau DAC, le M-DAC+


Specifications :
DAC ESS Sabre32 9018 chip
Sampling Rate 32-bit / 192kHz (Optical, Coaxial, AES) | 32-bit / 384kHz (USB) 2.8MHz (DSD64), 5.6MHz (DSD128), 11.2MHz (DSD256)
Digital Input 2 x Coaxial, 2 x Toslink Optical, 1 x AES/EBU, 1 x USB for PC USB, 1x USB for iPod/iPhone/iPad
Digital Output 1x Coaxial, 1 x Toslink Optical
Output Voltage Balanced: 4.5V RMS | Unbalanced: 2.25V RMS
Output Impedance Balanced: 20Ω | Unbalanced: 10Ω
THD (1kHz 0dB 20Hz - 20kHz A wtd) <0.002%
Frequency Response 20Hz - 20KHz (± 0.2dB)
Signal to Noise Ratio RCA: > -115dB, XLR: > -120dB
Dynamic Range RCA: > 115dB, XLR: > 120dB
Crosstalk RCA: > 120dB, XLR: > 130dB
Dimensions (mm) 114mm x 247mm x 292mm
Net Weight 3.7kg