I have a problem with using the black duplex. I have only been using CDs to burn in the system. After 140 hours, I used my LPs for an excruciating hour of trial. The sound on about 10 mixed jazz, classical and pop records of great reknown sounded dynamically flat hashy sounding with really noisy record surfaces and not as interesting as CDs. I experimented with mixing the components into the two dedicated black and red SR duplexes. Immediately the LPs sounded better. The best combo was the two monoblock tube amps into the black duplex and the Bryston isolation transformer with all the other equipment and distribution box into the red. My wife felt this combo also yielded better results for CDs after I decided the best combo of duplexes. (I didn’t torture her with the LP hour). Unfortunately, this combo also lost the blacks excellent ucolored high end ambience and decay retrieval. The sound while more dynamic in macro sense lost micro inflections. Sort of a warmer tubey sound but thoroughly enjoyable for my wife’s rock or my vocals and strings.
I know that the black fuses in the amps will rocket my sound and enjoyment quality.from my too brief 10 hours of listening to them I will ask SR tomorrow if the combo of 20 amp Bryston iso trans and big 125 watt tube mono-blocks doesn’t work on the black duplex even though it works just fine on the red duplex with standard or black fuses. Oh man those black fuses reduced my LP noise on bad vinyl and increased the tonal and dynamic balance to a fantastic level as well as totally cleaning up the sound of any source. FYI. my analog front end consists of a modded VPI TNT VI. modded SME IV. Benz Ruby 3 and custom subminiature tube phono stage with an audiointerface SUT.
I know that the black fuses in the amps will rocket my sound and enjoyment quality.from my too brief 10 hours of listening to them I will ask SR tomorrow if the combo of 20 amp Bryston iso trans and big 125 watt tube mono-blocks doesn’t work on the black duplex even though it works just fine on the red duplex with standard or black fuses. Oh man those black fuses reduced my LP noise on bad vinyl and increased the tonal and dynamic balance to a fantastic level as well as totally cleaning up the sound of any source. FYI. my analog front end consists of a modded VPI TNT VI. modded SME IV. Benz Ruby 3 and custom subminiature tube phono stage with an audiointerface SUT.