Bob - we're quickly reaching the limit of what I know...a couple of suggestions before spending any more on a USB cable.
1) try TIDAL. See if that gets you closer to the CD quality sound you are looking for vs Spotify. They offer a free (30...maybe even 60 day) trial so worth trying that. I'm very happy with Spotify and do note that not all their content has the same sound quality.
2) I don't know how good the DACs are in your Peachtree. They might not benefit BUT see if you can negotiate trialing a USB/SPDIF converter. In my experience that made a big difference in SQ vs straight USB input to a DAC. Empirical Audio (Steve Nugent) offers a pretty high quality converter as well as in-home trial. Worth looking into. Return it if no benefit. This also assumes you have a coax input to your Peachtree;'s DACs.
3) For some lower cost converter options, see info here.
http://www.computeraudiophile.com/f6-dac-digital-analog-conversion/15-universal-serial-bus-industry-standard-cables-connectors-and-communications-protocols-between-computers-and-electronic-devices-spdif-converters-shootout-15327/
I used a V-Link with the original V-DAC and that made a big improvement in SQ. The V-Link died and I replaced it with a V-Link 192 that I use with my Gungnir. Would try Steve's Offramp converter if I were willing to pay that kind of scratch. Might try a Gustard U-12 from China (see Ebay).
4) I'd experiment with source and converter and then see what a new USB cable gets you. Audio Advisor carries them. I can tell you for sure the Pangea I bought was absolutely NOT top of their line. You can pay stupid money for so-called "Audiophile USB" cables. Wireworld Starlight series gets good reviews...series 7 Platinum is, I think, top of that line.
Have fun. Hope you get the sound you are looking for.
1) try TIDAL. See if that gets you closer to the CD quality sound you are looking for vs Spotify. They offer a free (30...maybe even 60 day) trial so worth trying that. I'm very happy with Spotify and do note that not all their content has the same sound quality.
2) I don't know how good the DACs are in your Peachtree. They might not benefit BUT see if you can negotiate trialing a USB/SPDIF converter. In my experience that made a big difference in SQ vs straight USB input to a DAC. Empirical Audio (Steve Nugent) offers a pretty high quality converter as well as in-home trial. Worth looking into. Return it if no benefit. This also assumes you have a coax input to your Peachtree;'s DACs.
3) For some lower cost converter options, see info here.
http://www.computeraudiophile.com/f6-dac-digital-analog-conversion/15-universal-serial-bus-industry-standard-cables-connectors-and-communications-protocols-between-computers-and-electronic-devices-spdif-converters-shootout-15327/
I used a V-Link with the original V-DAC and that made a big improvement in SQ. The V-Link died and I replaced it with a V-Link 192 that I use with my Gungnir. Would try Steve's Offramp converter if I were willing to pay that kind of scratch. Might try a Gustard U-12 from China (see Ebay).
4) I'd experiment with source and converter and then see what a new USB cable gets you. Audio Advisor carries them. I can tell you for sure the Pangea I bought was absolutely NOT top of their line. You can pay stupid money for so-called "Audiophile USB" cables. Wireworld Starlight series gets good reviews...series 7 Platinum is, I think, top of that line.
Have fun. Hope you get the sound you are looking for.