Pretty much all of the 50s Fender tweed amps were 6V6 with a few 6L6 in there too. However, the only current tweed amps based on those old 50s models are 6L6 in the Blues Deluxe and Blues Deville or the EL84s in the Blues Jr which was an odd choice IMO. I know most of the Reverb re-issues have the 6V6s but why no tweed amps with them? I really wish Fender would make some 50s era tweed re-issues with 6V6s. The originals are some of the most sought after amps of all time, I'd imagine re-issues would be quite popular. Its long overdue.