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In case these have yet to find a new owner, I'd like to offer 375€ so you can finally get rid of them. :) I'm located in Denmark. Let me know.

I am hoping that something like this will do the trick. (analogue RCA - digital coaxial convertor) 1. Convert the analogue signal from GSX 1000's headphone out back to digital with a 3.5mm - RCA cable connected to this device. 2. Send the new digital signal to Fosi Q4 with a coaxial cable...

I want to use the GSX 1000 as a DAC and Q4 as an amplifier. GSX 1000 has 3.5 mm outs. Fosi Q4 has a coaxial in. I would like to have headphones and speakers connected and be able to switch between them with the GSX 1000. Is it possible? If so, what am I missing? Thanks so much for any advice!

I'd say it's much better for me at least. Bass and treble is more even and the original HD800 has a slight metallic sound to it, where the HD800S sounds more natural.

  Settings on the STX II are low gain 0-64 ohm, high gain 64-300 ohm and extra high gain 300-600 ohm, so in this particular case high gain would be the lowest suitable setting for an HD800S. We get what you're trying to say though. 

I've sometimes wondered if i should sell everything and be content with my first beloved headphone, the HD650.   So i get your decision, but are you still keeping your 4500€ amp/dac combo to run those headphones?    If i had a gear that expensive, i'd feel criminal if i didn't connect a high...

Are you able to switch fast between them? I'm starting slow, so just got myself a Modi Multibit. Very impressed with what such a little and inexpensive unit can do. I'm interested how much better the higher end Schiit can get. Looking forward to your impressions. 

Depends on your preference and the music you enjoy. If you're having issues with peaks, tonality or bass from your HD800 and want a more linear response, then it's probably a bad idea to throw different amps in your setup to try to "fix" them.   If you're in love with your HD800 without any...

Can confirm this to be true. I wouldn't use it for many other headphones though. It seems to work best with Sennheiser products and especially the 6-800 series.   I've tried both HDVD800 and HDVA600 and i also think the amp is excellent. My advice would be to pick up the HDVA600 and get a...

I feel you. I do think it's the best surround sound i've tried by quite a bit and i've tried creative sbx, cmss3d, asus, razer and others. The amp and dac on their own, are nothing to write home about. It's definitely overpriced. Still undecided if i should keep it.

If anyone in Europe is interested in one, i've got one for sale currently.

Yeah my guess is that it will work with RCA, XLR and optical if you have such an amplifier. Just get a 3.5mm cable that converts into one of these formats.

So, i bought a few cables and received a 3.5mm to 2x RCA today. I hooked my GSX1000 up to my HDVA600, and the hiss from the GSX, which was there at all volume levels, is completely gone. If i turn my HDVA600 all the way up with my sensitive Sennheiser HD598CS, there's a slight hiss to be heard...

Thanks! I still have an Audiophilleo2+PurePower which will connect via coax, so it seems i'll get the most out of it.