What is this front tube that came with the kit? [answered]

[Necplur]

I can't make out the manufacturer's logo.  What is this tube (just trying to document, as I start to tube roll.)

Also, what are the proper terms for the front and rear tubes?  input, output, voltage amplifier, power?

 

[Paul Birkeland]

That tube is a 5963.  The yellow printing would have said "Baldwin" on it, which means it was produced for the Baldwin organ company.

You could go with input/output for referring to the tubes I suppose.  Voltage amplifier would be fine for describing the 12AU7 and current amplifier for the 6080.

 

[Necplur]

Uh. May. Zing.  Thanks for the super quick reply!

 

[Doc B]

Relabeled Baldwin but looks likely to be made by Sylvania, judging by the style of the numbers.

 

[Natural Sound]

The nice thing about those organ tunes like Baldwin, Conn etc. is that they had to meet low noise specifications.