Here's what I did to track tube hours; I simply note readings on the tube box end, start-stop.
The meter is from ProPower (ProG713) and under $20. It's 120vac powered and is triggered from a SWITCHED outlet on the preamp. Meter is analog. Rect ~1 1/4" x 2" and has a neat little
mounting bracket that slides on from the rear. Mounted mine between VU 's. D9ale
(photo refused to host, oh well; ya'll get it)
The meter is from ProPower (ProG713) and under $20. It's 120vac powered and is triggered from a SWITCHED outlet on the preamp. Meter is analog. Rect ~1 1/4" x 2" and has a neat little
mounting bracket that slides on from the rear. Mounted mine between VU 's. D9ale
(photo refused to host, oh well; ya'll get it)