Synergistic Red Fuse ...

100 hours on the duplex with standard fuses. They appear to have broken in so that the mids are balanced with new superior bass and higher treble ranges and the ambiance, reverb, natural decay and air which was awol for the first three days are back. They sound similar to the black fuses. They may require an additional 100 hours to get to that place where the fuses were so beguiling and lush sounding. I will be installing the fuses after another 2 or 3 days just to see how far the duplex sounds.

A25105. The black fuses in my main amps only after only 2.5 hours made my system addictively richer, more detailed, and more musically interesting (until they blew).  They were rated 5 amp slo-blo.   SR Elliott is sending me 6.3 amp fuses.

I also installed a duplex in my living room system. That system consists of highly modified Dynaco ST 70 voltage regulated (not a ultralinear tap design), custom tube preamp, modified pioneer DVD-05 DVD/CD player (six big caps, high end Power cords on all equipment), Kenwood tuner and Legacy Signature 111s.
The black duplex after 24 hours showed great improvement in smoothing out high end peakiness from the rear tweeter, better integration of sound, wider soundstage, and the same punchy deep bass as before. My wife liked it immediately compared for the bad taste from my main system after 30 hours. I will be installing a 4 amp fuse just in case as it is rated 3 amps but SR Elliot recommended the higher rating.

If if you have the Teslaplex SE and replace it with the black duplex, put it on your television/cable box/blue ray player. I have a 75" Sony x940C and it improved the picture. The other big TV improvement (my wife told me to keep the tweak because it the picture was obviously much better) is to install a set of Stillpoints ultra-minis under your cable box.

fleschler, thx for your post.  I was able to see improvement on my LG OLED TV after I plugged it in along with other AV stuff to a Furman PST-8D outlet.  Got it from Amazon for $80.

I am glad to hear the black duplex is smoothing out the high end on your system.

If anyone is looking for an inexpensive, but high quality, equipment rack, I recommend the Pangea Vulcan:

http://www.audioadvisor.com/prodinfo.asp?number=PGVULRK

I just got one, and love it. It is very easy to assemble. I was pleasantly surprised at how much it improved the sound, especially with the addition of Herbie's Audio Lab Cone/Spike Decoupling Gliders:

http://herbiesaudiolab.net/spkrfeet.htm

I also highly recommend Herbie's Tenderfeet:

http://herbiesaudiolab.net/compfeet.htm

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.

It’s interesting that in my living room system.i have the amp into the black and other equipment into the red (same 15 amp circuit on opposite sides of the wall). That combo is working well. I will probably spring for a black fuse for the Dynaco ST 70 too