Dynaco / Dyna-Kit PAS 3X Tube Preamplifier
Designed by Ed Laurent and introduced by Dynaco in 1966, the PAS series of stereo amplifiers are renowned by audio enthusiasts the world over.
As with many Dyanco produts, the preamplifier was sold under the Dyna-Kit name for $69.95 as a build it yourself kit. There was also an option to buy it fully assembled for $89.95.
Check the back panel of your PAS preamplifier - if the speaker binding posts and RCA jacks are attached with screws, then it was originally built as a kit. If there are rivets, you have a factory wired unit.
More specs and pictures after the break.