The teslaplex se will not fit together with a GTX, but the narrow Black (of Non SE) which combo i was using previously could. 2 GTX or 2 Teslaplex SE's will not fit the P300 in this combination.
I especially value the cleanwave of the p300 which does clear the sound a bit, much like running a demag disc.
It's been a pleasure engaging in meaningful discussions with you and it very constructive in our tweaking quest.
My other black outlet is installed, yes, a calmer or organised sound with a tad more rigid sound, still good and does better slightly the SE it replaces.
This control of sounds appears to also limit the high frequency brilliance and any residual bloom in the mid regions and bass, though it does go deeper. Please read brilliance that this is not glare, harshness , hardness or tinnitus effect. I may be fortunate to not have any traces of these negative artifiacts in my system now.
As from a fresh memory. this brilliance in treble and high frequencies even compared to the SE and even more so to the GTX or GTX(NCF) could be considered as a downfall, though still sound good and pleasing.
The changes introducing another black outlet and fuse does not make for a large change, it's improvements now, i would consider more a change sonically. Do not that this is 2nd black outlet including fuses.
I would not fret over leaving the SE or have any real preference over the black now.
It goes for the fuses and the red fuse can and will probably stay. Incidentally, i have intentionally compared these 2 fuse in the wrong orientation (which i prefer actually sound more musical over the hyped up sound i was getting in the "correct" position which though technically better in audiophile terms was fatiguing and less musical to me.
As with equipment, the voicing or match has now to be determined by the user and tedious comparisions of various equipment and tweaks.
i do look forward to your further findings, so as that may provide me with a 2nd opinion with these outlets and also re-evaluate which areas may be lacking and re-optimize the combinations of outlets.
To hasten the burn-in process and settling time in the systems, i have found using the cleanwave of the p300 (Multiwave set) together with a burn in disc afther reintroducing any component does seem to normalise the sound thereafter rather quickly especially set to repeat overnight or even a shorter time frame.