The two nicer Sylvanias, ones a GTA 6sn7W the others a Jan-CHS 6sn7
I've swapped into the Chrome Dome 6sn6 GTA Chrome Dome... and WOWZA this thing sounds NICE, getting some details out of the Meze 99 Neo I have, that I haven't heard yet!!! Though it's not quite as 3D as the cheaper tube was :/ , here's to hoping that crazy JAN-CHS does the trick for me!
Starting out with the less one
So far I can say it's a nosier version of my Electro Harmonix 6SN7s, sounds not bad, but I do think a faraday cage would help... it's not pictured but I've got a stainless steel paring knife on the back nuts, it really does help a little with the noise
oooooooh wow, sound stage is reallly good on the 6sn7w, pairs really amazingly with my W1000X!!! Had to install a little TinFoil shield though, touch of noise was driving my nuts, my stainless steel knife wasn't working... had just enough to make a little tent ^^ now it's a happy little tube!
the Jan-CHS 6sn7w does sound the best, to start with it's a little microphonic, doesn't like to be touched or looked at, but it is the quietest, didn't make as much noise as the first two, still using the shield though in a different spot... it is a little bassier than the 6sn7 GTA, still not sure if I like that or not, oh yea, I do like it... Transcendental Tripping's intro bass line is... a little over emphasized with some headphones/gear
so to start the GTA 6sn7 Chrome Dome did a nice job masking some of the audible distortion the meze 99 neo has, but swapping into the 6sn7W Jan-CHS, I get the nice mids of the 6sn7 gta, but with a more powerful cleaner bass, which doesn't mask as much on the low end.
To the people who says these are bass light, aren't kidding! It's not as big a deal as people make it out to be, but compared to my PicoPower this amp doesn't have as much bass, though power amps have a good clean controlled low end, with more gusto on the Pico Power
But the JAN-CHS 6sn7W isn't as tubey as the GTA 6sn7, the mids aren't quite as forward, so where the 6sn7 gta would add a nice dynamic boost to a flatter slower headphone, the JAN-CHS 6sn7W doesn't, it's got better clarity for sure, which... is kinda nice, kinda not...
For what it's worth, while I appreciate the JAN-CHS it's not as much fun to listen to as the 6sn7 GTA, and at triple the price... It's a tough call. If you've got a really transparent headphone, and you want to preserve that, It'll do well
And... ooooooh! YEA... yea I'm diggin this bad boi... last time I heard that kind of SNAP on the percussion of So What, was with my LA D5k, out of my Starlight! With a VokShod... nice to get that kinda SNAP back,
Need to make more concise notes, an listen to these tubes with a better headphone than the Meze 99 neo, but this is my last night with it so I'm making due. Plus the 99 Neo isn't as clean in the bass as the Classics were, it's a little softer and loose. The Ember II and 6sn7 jan-chs pair nicely with that softer loose base I think. Out of a solid state, the Meze 99 Neo's flaws are more apparent