Vintage or Modern tone circuit. This small box gives me the way to compare 2 different circuits for the tone cap using the same guitar and settings. I can get right on the behavior using any volume/tone pots combination.

My LP is done and was very informative.
The guitar weighs in at only 3.823 kgs (8.42lb ), and at less than 1 once from my target; hard to expect better. The Lollar Imperial sounds gorgeous.