Why to use Foobar? You send data to your AE in packets. Data has no timing (recreated by AE). Nothing on your computer side make difference (unless program does data processing - like upsampling).
Standard AE has decent digital output (258ps jitter) but 10x worse analog out. I don't know what modification does but getting reclocking (upsampling DAC) or separate reclocker (even better) and the DAC might improve sound.
http://www.stereophile.com/digitalprocessors/505apple
Standard AE has decent digital output (258ps jitter) but 10x worse analog out. I don't know what modification does but getting reclocking (upsampling DAC) or separate reclocker (even better) and the DAC might improve sound.
http://www.stereophile.com/digitalprocessors/505apple