I have my audio files stored on a NAS, mostly in FLAC form. So my setup is NAS>router>Yamaha RX-A3030 AV Receiver>Woo Audio WA2>HD800 So I use my receiver as a music streamer and DAC using secondary zone, and control the music through a DLNA controller app on my phone/tablet (BubbleUPNP). I've...

Laptop via USB? Laptop via SPDIF? Computer via USB? Computer via SPDIF? Computer via coaxial?   Whats the best?

The new Pioneer Elite SC-68 receiver has a built in asynchronous 192kHz/32-Bit DAC.  Has anybody used this DAC?  How does it compare to other stand-alone DACs?  I was about to buy a Schiit Bifrost DAC to connect to my Woo Audio WA2 amp; but I also need a receiver for the home theater, so maybe...

I see HD650s for $359 on amazon from a third party dealer called DBROTH, who is not a Sennheiser authorized dealer.  Is it safe?

Im looking into buying one of these amps.  If i get the Woo Audio WA6SE, i would be connecting it to my NuForce uDAC2.  I've seen many threads about the WA6SE, and some about the HA-160D, but I havent seen a comparison between the two.    Has anybody had the opportunity to compare these two...

Noob here...I've been listening to music off my laptop with Sennheiser 555s, Grado SR60,  and Shure 440s.  I might be getting a Woo Audio WA6.  Whats the best way to connect that to my laptop?  DAC?  Do i need to upgrade my soundcard in order to not "waste" the WA6?

I have Sennheiser HD555, Grado SR60, and Shure SRH440 headphones.  I was looking into possibly trading in one of these for the AKG K240 (original, not mk2).  How does it compare to the headphones i currently own?  - I listen to Hip Hop, rock, alternative.  I usually listen on computer or IPOD.