GRADO RA-1 RA 1 RA1 HEADPHONE AMPLIFIER BATTERY POWERED
By eliminating AC interference, the battery powered Grado Reference RA1 Headphone Amplifier is designed for state-of-the-art performance specifically to play Grados. It will allow you to hear your Grado headphones like never before. Just like all Grados, the RA1 sounds warm, smooth, full-bodied,
rich and non-fatiguing. The amplifier offers 40 to 50 hours of rediscovery and pure listening pleasure.
- Power: Two 9-volt batteries
- Color: Mahogany
- Dimensions: 1.5"h x 5"w x 5.5"d
- Input: RCA (Pr)
- Output: 1/4" headphone jack
- Input impedance: 100k ohms
- Output impedance: 32 ohms
- Output power: 300mW
- Warranty: One-year
The Absolute Sound 2005, 2006, 2007 & 2008 Editor's Choice Award Winner
"With a tube-like rendering of timbre and a sweet, relaxed sound, the Grado RA-1 makes extended headphone listening a joy. Although battery-driven, the RA1 is more at home in your equipment rack or on your desk than out on the road. A beautiful wooden case finishes off this gem."
- Robert Harley, The Absolute Sound
"With the Grado Reference RA1 handling the amplification, music was rendered truer, clearer, and more life-like than I had ever imagined was possible."
- Willie Gluckstern, Audio Magazine
"Listening to my RS1's through the Grado RA1 headphone amp is like listening to a live performance, it puts you right there."
- Mark Rivera, Saxophonist with the Billy Joel Band
"This is such a nice job of product engineering by John Grado, I think it earns a nomination for "Dudely Product of the Year Award."
- Charles Hollander, Positive Feedback
To read Hollander's full review, click