Hi,
Edcor also has some useful ones. 6AQ5 is good into anything from 5K-8K.
Overkill for quality, but the price is right.
http://www.edcorusa.com/products/tra...xse/index.html
Check out the XSE10-8-8k (or XSE10-4-8k for a 3.2 ohm speaker)
Cheers,
__
Gregg