Depends on how good that soundcard is because USB may very well trump it if BiFrost USB input is implemented very well and the card is just so-so or a wash and if both are excellent you don't need the BiFrost (but you still will want it
).
Which will sound better is unknown until sometime reviews the BiFrost. I just looked up the Yamaha model and it looks pretty high-end but I can't tell how good the headphone output is.
The Lyr is a fantastic headphone amp and we'll have to wait for reviews on the BiFrost. With that said, you can find positive reviews about the Lyr + 702 combination.
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Which will sound better is unknown until sometime reviews the BiFrost. I just looked up the Yamaha model and it looks pretty high-end but I can't tell how good the headphone output is.
The Lyr is a fantastic headphone amp and we'll have to wait for reviews on the BiFrost. With that said, you can find positive reviews about the Lyr + 702 combination.
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If your computer already has SPD/IF output, is it still necessary to get the USB option with the BiFrost? I'm planning to purchase the Lyr and the BiFrost to drive the AKG 702.
I am currently using the Yamaha RX-V3800 receiver to drive the AKG702. How different would the AKG 702 sound when driven with the Lyr and the BiFrost?