If anyone wants to experiment with tubes in the Posseidon or Pacific we discovered a new 6N1P substitution tube. Game changer Ultra linear, ultra low noise and so much fun to listen.
I haven't rolled tubes. I've lived with my Poseidon for 8 or 9 months. You should listen to it for a while prior to changing tubes. It is a great sounding DAC and pre-amp with OEM tubes. I don't have a SOTA system but it's high end.
I recently heard my Poseidon with Bendix 5992 tubes with a Mullard GZ34 fat base rectifyer and the combination was easily the best I'd heard. The Bendix tubes took some of the harshness in the upper trebble off the GEC 6J5 tubes I've been using whilst maintaining the leading edge dynamics and overall musical coherence, whilst the Mullard recitfyer added a lot of useful separation and imaging to the sound.
Sadly, it seems that Bendix 5992s are something of a holy Grail tube.
I recently heard my Poseidon with Bendix 5992 tubes with a Mullard GZ34 fat base rectifyer and the combination was easily the best I'd heard. The Bendix tubes took some of the harshness in the upper trebble off the GEC 6J5 tubes I've been using whilst maintaining the leading edge dynamics and overall musical coherence, whilst the Mullard recitfyer added a lot of useful separation and imaging to the sound.
Sadly, it seems that Bendix 5992s are something of a holy Grail tube.
Probably the least important thing to consider when auditioning new gear. As it was phrased so well in the movie Beauty and the Beast as well as Lukasz in an earlier post above ....."Beauty comes from within" Maybe that's why I listen with lights out so that I am not distracted by looking at the...
In my Neptune (which is same tube types as Poseidon), I am using JJ 6V6S instead of 6J5 and it is exactly removing the harshness. JJs are new production, inexpensive and excellent sounding.
6N6P have been replaced by E288CC (no adapter needed) with great results as well.
I am also tempted to try new production 6N30P from EH or Sovtek. Has anyone tried these already?