"First developed in the Seventies, the Professional Series product line were the first classical guitar and lute sets to be offered in a wide variety of gauges. They have been acclaimed by concert guitarists, lutenists and prominent teachers and even used by such great luthiers as Del Pilar, Rubio, Papazian, Van Lennep and Gurian. The Professional Series have been the preferred strings by a whole generation of great artists including:

Laurindo Almeida, Julian Beam, Mario Escudero, Maria Luisa Anido, Sabicas & Rey de la Torre

The Professional Series strings are still the standard for excellence expected by all serious guitarists. No single set of strings can possibly bring out the finest qualities of every type of guitar or best suit the varied technique and styles of every guitarist. This product line offers some distinctive designs to perfectly satisfy the demands of professional concert performers.

The 411 Antique set includes gut trebles and high tension silver-plated wound basses. These strings are designed for players who prefer the sound and feel of traditional gut strings on vintage classical guitars. The 411 Antique set matches the 10PH basses with the finest gut trebles. Polished and finished with absolute precision, these trebles offer the unique sound of gut strings with an accuracy of intonation and extended string life never before possible with this material.