The main guitars used by Duo Lenz in all recitals are Australian made and designed, of the innovative lattice bracing style by Perth Luthier Paul Sheridan.

Paul Sheridan started his working life as an auto-electrician. After leaving the auto-electrical trade, he began making handmade furniture. During this period he developed a strong interest in guitar design.

Sheridan Guitars first opened their doors in 1985, building traditional spruce/cedar and rosewood classical guitars. As time moved on, Paul became discontented with the sound of the fan braced guitar, due to the inherent constraints of that form of construction. Paul experimented with the Smallman-style lattice bracing, with the intention of increasing the musicality of the instrument.

Musicality seems to be the prime criterion for Paul in his instrument making, since musicality is made up of all the qualities one can imagine for the guitar, eg. tonality, sustain, attack, full content of harmonics, volume, projection, ease of playing etc. All these and more make up the musicality of the instrument, remembering that even the term musicality is subjective.

Although admiring the traditional way of crafting a guitar, Paul wants to hear more from the instrument. Using the Smallman-style lattice bracing has given him a way of fulfilling this.

Because of his unique and innovative approach to guitar making Paul has now established himself as one of Australia's leading guitar makers.

Besides playing modern Classical guitars, Duo Lenz also plays replicas of 19^th Century Guitars. These instruments are copies of guitars by René Lacote from 1839, built by Perth Luthier Simon Rovis-Hermann.

Richard Lenz also performs on a Vihuela de Mano a replica of a Renaissance instrument, built by Luthier Malcolm Brooks.