Feliks Audio MK2 6N6P tube (/w adapter) alternatives?

Hi!

Finally found a substitute for my long gone MLP, which was Feliks Audio MKII (second hand but in mint condition). Now that I powered up that thing second time today I saw how one of the 6N6P tubes didn't light up at all, there was a crack in the tube so yeah, it was dead.

I went and ordered a last piece of 6N6P tubes of my local store but have anyone tried some alternatives for the amplifier? I know that the 6N6P is not possible to just change to any other tube without adapters and that's also a little bit hazy for me, at least for now, since I got the amplifier today (you can imagine the frustration 1) finding a tube amplifier that fits my needs and budget for about an year 2) poof goes the one tube on the second time powering it up) but any how since I am now pretty familiar with waiting and have to wait for that substitute tube until monday now - has anyone had any nice findings on adapter/6N6P line or will I have to stack some good ol' 6N6Ps to my drawer since those other tubes are easily available, even locally.

I heard that Valhalla 2 uses pretty much the same configuration on tubes but haven't had time yet to dig into it really.

 

I’m afraid that’s your best choice.

 

Well yeah, sure it is but is there some super 6N6P tubes that make your world shake? Photon was mentioned somewhere.