High-Gain Version of a Reference Favorite
Your quality headphones get a big performance boost with Grado's RA-1 reference headphone amp. And the AC version brings new convenience to the Grado. You get the same great sound as the DC model without having to worry about battery consumption. Just plug the Grado into a wall outlet with the AC adapter and premium power connection that won't pop out of the back of the RA-1 like bargain AC adapter jacks often do.
The RA-1HG is designed to drive headphones with impedances of 100 ohms or more. So now headphone enthusiasts can enjoy the RA-1's sonic qualities with a wide selection of headphones.
Tube-Like Rendering Of Timbre
"With a tube-like rendering of timbre and a sweet, relaxed sound, the Grado RA-1 makes extended headphone listening a joy," notes Robert Harley in The Absolute Sound magazine.
"The RA-1 offers excellent value for money, and does a fine job powering phones from Sennheiser, Shure and Ultimate Ears. It does especially well with Grado 'phones and does not embarrass itself next to state of the art components," reports Phil Gold in Inner Ear Magazine.
"With the Grado RA-1 handling the amplification, music was rendered truer, clearer, and more lifelike than I had imagined was possible," proclaims Willie Gluckstern in Audio magazine.
High-Current Output Capability
Machined from a solid block of mahogany, the RA1-HG uses a pair of audiophile op-amps with high-current output capability and wide bandwidth. Hook it up to any line source, portable or in-the-home, and luxuriate in the warm, smooth, full-bodied, rich, non-fatiguing sound.
Designed for state-of-the-art performance and specifically to play Grados, the RA-1HG will allow you to hear any brand of quality headphones like never before. Sound quality is warm, smooth, full-bodied, non-fatiguing and rich. Drive your headphones to their full potential. Get an RA-1! | 
