The Acoustic tube amps probably use the same tank as the tube Fender amps with an 8 or 10 Ohm input impedance.
Check the 230 or 330 amp schematics to see if the drive circuit is similar to the 134. That would indicate that the 1BB1D1B is the correct tank.
Check the 230 or 330 amp schematics to see if the drive circuit is similar to the 134. That would indicate that the 1BB1D1B is the correct tank.