i'm looking for a dull 12ax7 and 12au7, ideas?

i have a tube amp which uses 12at7 and a cd player which uses a 12ax7 or 12au7. i like to dull the sound when listening to bad cds.

any ideas for very soft and veiled 12 volt tubes.

what about raytheon 5814 ?

thanks for yuour help
I just noticed your other similar post looking for a CD player. Why don't you just buy a 10 band equalizer? Then you can tailor the sound of the system to your hearts content? The only thing you might loose sonically by putting an equalizer in your system would be things that your posts suggest have no meaning to you.
I like the Electro-Harmonix 12AX7s and 12AU7s. Wouldn't exactly describe them as "dull" but they are very musical.
EH tubes are far from dull. In fact they will actually give you the polar opposite of what you're looking to do. EH tubes in general tend to be edgy or grainy with good tubed equipment and they are priced accordingly. Try some older Mullards or Brimars.