Classical guitar for repertoire of all periods is sometimes critically viewed: Torres and post-Torres style modern guitars (with their fan-bracing and design) have a thick and strong tone, very suitable for modern-era repertoire. However, they are considered to emphasize the fundamental too heavily (at the expense of overtone partials) for earlier repertoire (Classical/Romantic: Carulli, Sor, Giuliani, Mertz, ...; Baroque: de Visee, ...; etc.). "Andrés Segovia presented the Spanish guitar as a versatile model for all playing styles" to the extent, that still today, "many guitarists have tunnel-vision of the world of the guitar, coming from the modern Segovia tradition". While fan-braced modern
Ten-string classical guitar of Yepes six-string guitar did "not have the same intensity as the others." Ten-string classical guitar of Yepes The ten string extended-range classical guitar, with fully chromatic, sympathetic string resonance was conceived in 1963 by Narciso Yepes, who "ordered the guitar from José Ramírez [III]". This instrument is sometimes referred to as the "modern" 10-string guitar (or the "Yepes guitar") to differentiate it from ten-stringed harp guitars of the 19th century. Today, ten-string instruments to Ramírez' original design remain available from the Ramírez Company, and similar instruments in a variety of designs are available both from the Ramírez Company and other luthiers,