From Reverend Guitars:
"JETSTREAM 390: Fat, raw and bluesy but with just the right amount of bite to cut through. Positions 2 and 4 on the pickup selector deliver classic “quack” but with a thicker tonality. An amazing guitar for both clean and distorted tones with enough twang for surf, but thick enough for rock.
CUSTOM PICKUPS: We design our own proprietary custom pickups, to achieve the best tonal match with our instruments. Reverend pickups are also specifically designed for each position, for balanced volume and tone when switching.
KORINA BODY: Korina (aka White Limba) is a medium-light weight wood, highly prized for consistency and tonal qualities. Often found in boutique and vintage instruments, all Reverends feature Korina bodies. A highly resonant wood, Korina is a key factor to producing our lively, responsive instruments that are rich in harmonics.
BASS CONTOUR: This passive bass roll-off is great for tightening up the low end, or re-voicing the pickups. It can make a humbucker sound like a single-coil, or give a P-90 that classic twang. Variable pickup voicing at your fingertips!
PIN-LOCK TUNERS: A thumbwheel under the tuner pushes a steel pin up through the post, locking the string in place for exceptional tuning stability and super-fast string changes. Also, the posts are custom height, eliminating the need for a second string tree.
DUAL-ACTION TRUSS ROD: Our dual action rod adjusts in both directions, allowing back bow or forward bow. This assures correct adjustment range is possible regardless of string tension, extreme climate conditions, or the effects of long term aging. It’s also located at the headstock for easy access.
BONEITE NUT: We use "Boneite", a synthetic bone nut on all Reverend instruments. Boneite reduces friction, allowing the strings to easily slide through the nut slots, improving tuning stability."