have three NOS (original boxes are pretty dog-eared, but they ARE original boxes) Telefunken EF804 tubes.

I was thinking of using them in an amp design; however, I think it would be a better idea to use an EF86, because of its commonality with OTHER equipment I own (Eico HF22, Heathkit SP2, etc). So, I would like to trade, tube-for-tube, for some good EF86 or equivalents.

I know they're just about equivalent, from a functional sense... but I would prefer to have the same pin-out on all the amps... so, I would like to swap out my EF804s for a good set of EF86s. I would need something Philips-built... Amperex, Valvo, Mullard, etc. Don't NECESSARILY have to be NOS... as long as they TEST as new and are NOT MICROPHONIC.

If anyone is interested in this swap, please contact me. I know the EF804 is probably the better tube from a performance standpoint... but the EF86 is a known quantity for me, and I'd rather go that way...

Thanks!

Regards,
Gordon.