Brad Delp

In a performance of "Peace of Mind" on December 7, 1988, in Hamilton, ON, Brad Delp can be seen playing a Jackson Soloist. The guitar is identifiable by its distinct shape, which is slightly rounder near the bottom compared to the Jackson Dinky. This footage is available on YouTube, uploaded by RebelliousHutterite2.

In the official HD video for "More Than a Feeling" by Boston, Brad Delp is seen playing a Martin D-12-20 guitar. This discovery is particularly exciting, as I had been searching for confirmation of the specific guitar model he used for four years. Interestingly, the Martin D-12-20 resembles a guitar produced by the Lviv factory in the USSR, which I had encountered previously.

In this photo, Delp can be seen playing a Gibson L6S.

Delp can be seen playing a Gibson Les Paul Junior Special Double Cut in this photo.

In the video "Barry Goudreau - Dreams" on YouTube, Brad Delp can be seen playing a 1969 Gibson SG Standard.

For live shows with Boston, Delp used a Fresh Fuzz modified by bandmate Tom Scholz, as mentioned by Scholz in an August 1977 Guitar Player interview. The interview was transcribed by rockman-gearup.com user REO Speedweasel on October 3, 2016.

The only other piece of modified equipment that Boston uses onstage is a fuzz box run between singer Bradley Delp's Gibson L6-S electric guitar and Ampeg V-4 bass amp head. "I think the thing is called a 'Fresh Fuzz'," says Tom. "It's a cheap little box that I traded for a six-pack a while ago. I put in a few resistors and capacitors to boost the high end and give it a shelf. You get more raunch than fuzz out of it now, which isn't bad at all!"

In the image provided, Brad Delp is holding a 1960 Gibson Les Paul Junior Doublecut, confirming his use of this specific Gibson guitar model.