capo in addition to vibrato effects. Bass and guitar versions were available. Later designs included: P-series guitars and basses featured a smaller wooden body with bolt-on composite neck. The body was shaped more like an arrow or mini-A than the rectangular L series body. S-series which featured the only Steinberger with a headstock. Very rare with about 300-350 built. The guitar featured Ned Steinberger's 40:1 gearless tuners. M-series guitars and basses, designed by English luthier Roger Giffin. These had a twin-cutaway wooden body and a bolt-on graphite neck, resulting in a more traditional look, yet still with the headless tuning system and optional TransTrem. K-series guitars designed by American luthier Steve Klein. These featured an ergonomically designed body of non-standard shape again married to a headless graphite neck. A similar version is still made by luthier Lorenzo German, an employee of Klein who currently owns and runs Klein Electric Guitars. Q-series basses featured twin cutaway bodies and a bolt-on graphite neck. The body style was more modern than the M series. Introduced in 1990 the body underwent a significant revision in the mid '90s but kept the same moniker. Synapse guitars and basses are instruments manufactured by Gibson under the Steinberger name, with Ned Steinberger contributing to the design. The bodies are through neck maple construction with maple wings. The truss rod is in a graphite channel with a phenolic resin fretboard. They have a non tremolo fixed bridge. These guitars can use double ball or standard guitar strings without an adapter. Fitted with two active EMG pickups the on board pre-amp is able to boost and cut treble and bass frequencies. Additionally there is a mix pot for the built in piezo under bridge pickups. As well as a regular guitar model, the Synapse line also includes baritone guitars with a built-in Transcale capo that can be rolled up the frets. The Transcale guitar can be strung with standard guitar strings or a set of baritone strings. Several companies licensed the headless technology from Steinberger and produced numerous all-wood clones or similar instruments. Hohner, for example, produced licensed all-wood L-series copies and Cort produced headless guitars with different body designs. Current official all-wood instruments are sold under the Spirit by Steinberger brand. The Spirit comes in two versions, the Deluxe and Standard. The Deluxe features bridge and neck humbucker pickups with a single coil in the middle position and