6l6,s for most clean headroom ?

[cbnutt]

id just picked up a 68 pro reverb, iam into clean headroom, so was wandering if any 6l6,s seem to stay cleaner better than others, either new production or old stock.

[vandi]

NOS JAN Phillips 7581A's if you can find them.
Most clean headroom out of any 6L6 type I have ever used.
GE and RCA made them also but I have never tried them.

[jcs]

the big bottle sylvania 6l6gc that look identical to the sylvania 7581 (twin getter version) have a lot of headroom.

[jads57]

How about KT 66`s?

[docmh]

In my opinion the SED Wing C's are the best new tubes for clean headroom.

[RussB]

In my limited testing JJ's won out over all others. the list included

JAN 7581A's
TAD short & long bottles
SED
Sovtex WXT+
Ruby MSTR

I put a 100mV 1kHz signal into my Vibroclone and measured max clean signal across an 8 ohm resistive load with an O'scope

Valve Arts KT66's had the lowest headroom. Only 32 watts

Don't kill the messenger. Different amp may yeild different results. YMMV ;)

[vandi]

in my opinion the sed wing c's are the best new tubes for clean headroom.

+1!

[teleman55]

The big bottle Sylvania twin getter ones got it in my '70 Pro Reverb. I finally pulled them, they were old, had tons of use, and were starting to feel a little stiff (they still work), and put in JJ 6L6GC. They do it too.