I've been listening for a couple days to the 7+ and I like it. I have to disassemble my speakers for mods so I won't be doing much listening for a few days.
My system is econowave delite diy speakers, AR VT100mk3, buffalo2 direct to amp via trannies. JPS wire except the PC. Dedicated 20A service to Hubbell hospital grade duplex. Amp and DAC share the duplex. Another identical Black Sand PC powered the DAC.
I compared the Triode Wire 7 to Black Sand Silver Reference 5. on the power amp. I mostly used my primary test track which is the 'Prelude' movement of Kalevi Aho's Symphonic Dances.
http://www.amazon.com/Kalevi-Aho-Symphonic-Dances-Symphony/dp/B0001LYG3AAlso some Felix Hell organ music and a run through my general test track playlist of well recorded pop, jazz and classical tracks.
In back and forth direct comparisons with the same music the Black Sands was slightly more macro dynamic and open sounding, with darker and deeper background space and slightly more tonal detail. The audiophile in me likes the Black Sand in these quick-switch comparisons. The Triode had slightly thicker and warmer tone which I liked because it prevented distraction from excessive details and allows deeper listening trance. The music lover in me likes the Triode. The tone density of the Triode is better, especially on non-acoustic instruments of popular music genres where audiophile cues less important than ballsy melody and feel. On acoustic instruments where tonal detail is the thrill, the slightly more detailed BS edged the Triode, but that's part of what I call distraction. On my speakers, with ultra detailed Radian 475PB compression drivers in a big horn, the Triode brought balance to a slightly antsy top end. In long listening sessions with the Triode Wire I liked the feeling of freedom to choose to focus on tonal details and spatial cues or I could choose to ignore those sonic illusions and listen deeper to melody and musical intent. With the Black Sands I am more prone to listen to sound quality and sonic realism cues more. The Triode 7 is plenty detailed, but not overly. In fact, the openness of the large gage conductor and lovely sunny feel of the copper is the first thing I noticed on first listen, before the comparisons.
Since the differences I heard between these wires correspond with stereotypical sonic difference of silver vs copper, I think that's mostly the reason for the differences that I heard. Both wires are very well constructed and adequate gage for feeding the big transformer of the VT100.
Both cables kicked ass on big crescendos and organ pedals where fast current matters. I could live happily with either of these wires.
Thanks very much to Pete for sending the wire down here for a tour. I haven't done a listening comparison in a long time, it was fun!
Rich