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The RA1 from Grado is a reference-quality headphone amplifier designed specifically to drive Grado headphones. Machined from a solid block of mahogany, this amp sounds as good as it looks. The front of the amp features a volume knob and a 1/4" stereo output, while the rear features an on/off switch and a pair of gold-plated RCA phono inputs for accepting a line-level stereo source.
Beautiful mahogany construction
Designed specifically to drive Grado headphones
Warm, smooth, full-bodied sound
Operates for 40-50 hours on a pair of 9V batteries
Single 1/4" stereo output
Gold-plated stereo RCA phono line input
Front-panel volume knob
In the Box
Grado RA1 Reference Headphone Amplifier (Battery Power)