I have built a number of different classic tube amp designs including:

Tweed Champ
Tweed Princeton
Tweed Deluxe
Tweed Vibrolux
Tweed Super
Tweed Pro
Blackface Princeton Reverb
Blackface Deluxe Reverb
18 Watt
18 Watt TMB
Gibson EH 150
Ampeg B15 (all tube bass amp)

There are tons of other options and I can design something custom for you as well, just ask!