Ortega Thermo 4/4 + Pro Gig Bag

Thermo technology: the character of an instrument “played in” from day one

Ortega’s Thermo series uses a controlled heat treatment that dries and stabilizes the woods, simulating decades of natural aging. The result: a lighter, stiffer top, improved vibration transmission and the feel of a guitar that is already “open”. The spruce’s amber hue further highlights its distinctly premium aesthetic.

Which musicians and styles is it designed for?

Designed for ambitious students and experienced guitarists alike, this 4/4 classical guitar excels in classical repertoire, bossa nova, nylon-string fingerstyle, acoustic pop and singer-songwriter music. The “Traditional Neck” and 51 mm nut width provide a comfortable setup for alternating bass and melody, arpeggios and polyphonic lines.

The sound

The solid torrefied spruce top delivers precise attack, generous dynamics and excellent projection. The pao ferro back and sides enhance articulation, with clear bass, defined mids and silky highs. The torrefied maple/jatoba combination stabilizes the neck and helps produce clean sustain, while the 51 mm nut allows each note to breathe for excellent clarity in classical playing.

Recommended compatible accessories

• ORTEGA NYP44H nylon string set (identical replacement).
• 4/4 classical-size hard case for maximum protection during transport.
• Flat classical guitar capo (non-radiused key) for changing key without fret buzz.
• Clip-on tuner and soundhole humidifier for tuning stability and wood protection.

Technical specifications

Format	4/4	Scale length	650 mm / 25.59"
Top	solid roasted spruce	Nut width	51 mm / 2.01"
Back & sides	pao ferro (laminated)	Frets	19
Purfling	walnut	Bridge	roasted jatoba
Back & sides finishing	satin	Series	Thermo Series
Neck	roasted maple	Tuning	E-A-D-g-h-e'
Neck type	Traditional Neck	Number of strings	6
Truss rod	double action	Included	Pro Gig Bag
Key	roasted jatoba