Classical guitar 58 : olive wood and spruce
- Top : spruce
- Back and sides : olive wood
- Neck : cedrela odorata (cedro)
- Bridge : rosewood
- Fingerboard : ebony
- Scale length : 640 mm
- Finish : french polish shellac
- Air mass resonance T(1,1)1 : 100 Hz
- Top plate resonance T(1,1)2 : 199 Hz (G - G#)
