I have a 1950 Martin Tenor guitar that Phil, over at Sam Ash, is currently installing a Fishman pickup in. He recommended that, since it's an older guitar without a truss rod in it, having a preamp and/or DI box would be beneficial. I've been using the Fishman Platinum Stage Preamp on my Tenor ukulele, while I wait for my guitar to be finished, and I've got zero complaints. There is alway this sort of "thud" sound that comes from using a passive ukulele pickup, and this pream allowed me to single out the different treble, mid and bass ranges so that it's barely noticeable anymore. My ukulele sounds even better on stage and I can't wait to see what this preamp can do for my guitar!!