Mullard 3-3 Printed Circuit Board
Some individuals aspire to build the 1955 Model tube amplifier themselves. However, they often encounter challenges when attempting to recreate its retro, point-to-point assembly.
Some individuals aspire to build the 1955 Model tube amplifier themselves. However, they often encounter challenges when attempting to recreate its retro, point-to-point assembly.
This document aims to serve as a guide for building the 1955 Gen2 vacuum tube amplifier. It can also be used for assembling the simplified wiring version, the 1955 Gen1.
In the original Mullard 3-3 design the operating point of the EL84 tube is highly dependent of the amplification factor of the EF86 valve.
How to calculate a voltage divider to reduce the input to the valve amplifier
It’s been over a year and a half using the first built 1955 model tube audio amp I have in my living room. The tube amp has been running two to three hours a day to listen to jazz or classical music.
New performance measurements have been made over the 1955 (Mullard 3-3) tube amplifier. You can see it on the 1955 tube amp measurements page.