The Dynamic Vibrato is often confused with the Fender floating tremolo, which it resembles. Audio effects such as vibrato, tremolo and phasing are examples. The Fender "synchronized tremolo" is the most widely copied vibrato system. "Checkmate 100" featuring dual channels, reverb and tremolo effects. A dual-humbucker version with a Floyd Rose tremolo will also be released. It features a Kahler-style tremolo and tribal designs and lacks a pickguard. The JS1600 is a fixed bridge guitar with no tremolo system. The Strat Plus Deluxe was introduced in 1989 with pickup and tremolo variations. The guitar is usually played with fast, un-muted tremolo picking and power chords. There are many types of harmonica, including diatonic, chromatic, tremolo, octave, orchestral, and bass versions. Ibanez built one of their "Maxxas" guitars for him with a palmrest for the tremolo. Tremolo effects pedals are also widely used to achieve this effect. Other types followed soon thereafter, including the various tremolo and octave harmonicas. It has six strings and a Floyd Rose tremolo. It had the same non-licensed "Fender Synchronized tremolo"'s clone bridge.