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Recommended Audirvana+ 2.5 SRC settings for Schiit Bifrost 4490 DAC and Schiit Bifrost Multibit DAC


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I realise this is a very specific question that not many people will be able to answer....

 

However for those who use A+ and a have Schiit Bifrost 4490 delta-sigma DAC and/or Schiit Bifrost Multibit DAC, what SRC settings would you recommend using in A+?

 

I'm assuming that for the Multibit, it is best to switch off all SRC in A+ and let the megacomboburrito filter in the DAC do everything, but what about for the 4490 model?

 

And do the answers to the above questions change if I introduce DSP (i.e. Dirac Live) into the equation?

Loudspeaker system: 2010 Mac Mini 2.66GHz C2D -> 10.11.6 -> A+ 2.6.8 -> Schiit Yggdrasil (USB.v5 & Analog.v2) -> Yamaha A-S3000 -> Tannoy Edinburgh Monitor Gold 12 & BK XXLS400

Headphone system: 2010 Mac Mini 2.66GHz C2D -> 10.11.6 -> A+ 2.6.8 -> Schiit Yggdrasil (USB.v5 & Analog.v2) -> Schiit Mjolnir 2 / Schiit Jotunheim -> Sennheiser HD800S / HD600

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I realise this is a very specific question that not many people will be able to answer....

 

However for those who use A+ and a have Schiit Bifrost 4490 delta-sigma DAC and/or Schiit Bifrost Multibit DAC, what SRC settings would you recommend using in A+?

 

I'm assuming that for the Multibit, it is best to switch off all SRC in A+ and let the megacomboburrito filter in the DAC do everything, but what about for the 4490 model?

 

And do the answers to the above questions change if I introduce DSP (i.e. Dirac Live) into the equation?

 

 

I don't have any experience with DSP, but I have the Bifrost Multibit and I find the following settings to be "like butter":

 

Steepness: 3 dB

Filter Max Length: 800,000 samples

Cutoff Freq: 1.03

Anti-Aliasing: 200.0

Pre-ringing: 0.38

 

Oversampling 2x only

 

That's after trying many, many combos, including many recommended around here as starting points. I'd say the single most important one I've found with the Bifrost that *seems* DAC dependent is the Pre-Ringing. Anything over 0.5 sounds harsh to me.

 

Hope this helps,

 

Dave

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I don't have any experience with DSP, but I have the Bifrost Multibit and I find the following settings to be "like butter":

 

Steepness: 3 dB

Filter Max Length: 800,000 samples

Cutoff Freq: 1.03

Anti-Aliasing: 200.0

Pre-ringing: 0.38

 

Oversampling 2x only

 

That's after trying many, many combos, including many recommended around here as starting points. I'd say the single most important one I've found with the Bifrost that *seems* DAC dependent is the Pre-Ringing. Anything over 0.5 sounds harsh to me.

 

Hope this helps,

 

Dave

 

Thanks. I think I have a lot more reading to do on the SRC settings!

Loudspeaker system: 2010 Mac Mini 2.66GHz C2D -> 10.11.6 -> A+ 2.6.8 -> Schiit Yggdrasil (USB.v5 & Analog.v2) -> Yamaha A-S3000 -> Tannoy Edinburgh Monitor Gold 12 & BK XXLS400

Headphone system: 2010 Mac Mini 2.66GHz C2D -> 10.11.6 -> A+ 2.6.8 -> Schiit Yggdrasil (USB.v5 & Analog.v2) -> Schiit Mjolnir 2 / Schiit Jotunheim -> Sennheiser HD800S / HD600

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