I need info on a vinatge Shure Vocal Master PA 6-channel w/rev. All I can get as I am considering purchasing it soon. Owner also states that it is an all tube unit.
The Vocal Master units were NOT tube. They were the early transistorized units. The VA300 unit had 1/4" phone plug inputs and was for high impedance microphones. The VA302 unit had XLR connector inputs and was for low impedance microphones.
You can download the operation/service manuals off the Shure web site at:
(Be advised that Shure no longer repairs or has parts for these units.)