By the way Vinnie why 6N30 are not compatible? Is it impossible completely or just to difficult to add 6N30 compatibility?
NOT IMPOSSIBLE... I *could* make the LIO tubestage compatible. But I would need to mod it so it provides higher output current for the filament required by this tube. And without a switch of some sort, you would not be able to switch back to the 6922 family (which draws less current for the filaments). The LIO Tubestage's filament supply is a Constant Current design.
BUT - the other problem is that the 6H30 is too tall, so you wouldn't be able to close the top cover.
A board redesign would be needed to allow those tubes to mount parallel with the board instead of perpendicular.
AND - the 6H30s throw off a lot more heat than the 6922, so we would also need to test air temperature inside to make sure enough heat
escapes from the vents on the each of the modules' rear panels...
Thanks for your feedback with the 6N1P!
Thanks for the link! It might be helpful for some, but I've found that certain tubes sound different in different circuits. So the way a tube changes the sound in one component might be different compared to how it changes the sound in another.
So keep this in mind - and ideally, stick to feedback provided by those who tested with LIO.
And then there is the synergy with the speakers / headphones
But all of this keeps things interesting - especially for those who like to tweak!