As we read on the video's description:
Guitar: 1962 Ignacio Fleta
Here's Smaro Gregoriadou playing Bach's Sarabande from the first Cello Suite, BWV 1007, on a gorgeous 1962 Ignacio Fleta classical Guitar. Recorded at the Guitar Salon International showroom in Santa Monica, CA.
Smaro uses the 'Superior' model Kertsopoulos guitar support-amplifier, designed and constructed by Yorgos Kertsopoulos .
Huge thanks to the folks at Apogee Electronics (ApogeeDigital.com) for the use of their Ensemble interface in these recordings.