Reynaud Bliss Jubile vs Cantabile Jubile

Depending on the vintage the Sylvania 6 volt tubes can be pretty forward and could have much more affect than  changing out speaker cables.  Mullard's would of course tone it down but expensive.  An alternative to them are Matsushita for less. Andy at Vintage Tube Services has them in stock. One speaker cable that will help tone the top end down for not a lot of money is the Dueland 12 gauge dual cable from Parts Connexion.  Add the connectors of your choice or as they recommend use bare wire. It's what I use with the Abscisse Jubile after trying four others.  Glad you found out that tilting them worked. 

i have a pair of cables made of those exact wires with klei banana ends.  my fave cable for most scenarios.  think they'd be too smooth with older reynauds i had but never tried the newer ones.  could be a good match.

sylvania tubes to me does emphasize the highs a bit.  rca is more balanced and ge is a bit smoother. 

Yeah they might have been a bit much for Reynaud's from the Twins and Trente era but do just fine with the Abscisse and Bliss Jubilee.  

RCA's too a good suggestion but not the Clear Tops as they are a different bred to my ears from the Black Plates which are a bit more. 

Now that I've had the Monster Cable speaker cables in my system for a bit, I think they're certainly a better fit. There's still a bit of top end to be toned down. The thing with trying speaker wire is that I can't use standard lengths as I need 12' or so at the least. I don't want to just purchase cables and be stuck with them.

Regarding the Sylvanias, Andy had actually recommended them, but I suppose it's worth trying something else. At least he has a return policy with his tubes.

I also tried the Russian Tung-Sols originally supplied with the Pathos, and they're worse in the high end (brighter, brasher) and worse in the bass as well (tubby).

I was playing my the UHQR 45rpm of Kind Of Blue, and oh, does it sound great. There's not a ton of high end in that record, but what I do hear is pretty terrific. Neutral, musical, plenty of small-scale dynamic nuance, very natural, and 3-dimensional images.

But while better than with the Grover Huffman silver speaker cables, it get still sound too bright with brighter records. They're not forgiving. If I raise myself up from my sitting position on the couch a little bit, the brightness gets more pronounced. I may try to angle the speakers back just a bit more. I've maxxed out on what I can do with the spikes (lower in back, raised in the front), so I'll need to find some sort of shims.