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  • Grado RA1 Battery Powered Headphone Amplifier
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Grado RA1 Battery Powered Headphone Amplifier

by Grado

Currently unavailable.
We don't know when or if this item will be back in stock.
  • Hear your headphones like never before
  • 40 to 50 hours of listening pleasure with two 9-Volt batteries
  • Machined from a solid block of mahogany
Currently unavailable. We don't know when or if this item will be back in stock.


Technical Details

  • Designed for state-of-the-art performance and specifically to play Grados, the battery powered RA1 will allow you to hear your headphones like never before. The RA1 can be powered by two 9-Volt batteries that will drive the amp for 40 to 50 hours of listening pleasure. And the sound? Just like all Grados: warm, smooth, full-bodied, non-fatiguing and rich. Hook it up to any line source (portable or in-home) and drive your Grado headphones to their full potential.

Product Details

  • Product Dimensions: 1 x 1 x 1 inches ; 2 pounds
  • Shipping Weight: 11 pounds
  • ASIN: B00076VEGG
  • Item model number: RA1 BATTERY
  • Average Customer Review: 3.3 out of 5 stars  See all reviews (9 customer reviews)
  • Date first available at Amazon.com: April 13, 2004

Product Description

Product Description

After years of relying on other equipment to drive Grado headphones, you can now listen and enjoy headphones through our new Grado Reference Headphone Amp, the RA1. Designed for state-of-the-art performance and specifically to play Grados, the new RA1 will allow you to hear your headphones like never before. This new amp is machined from a solid block of mahogany and measures 5" wide, 5 1/2" deep and 1 1/2" tall and weighs in at 12 oz. The RA1 is available in an AC version or can be powered by two 9-Volt batteries that will drive the amp for 40 to 50 hours of listening pleasure. And the sound? Just like all Grados: warm, smooth, full-bodied, non-fatiguing and rich. Hook it up to any line source (portable or in-home) and drive your Grado headphones to their full potential.

Amazon.com

The best way to enjoy the stunning quality of Grado headphones is with the Grado RA-1 Battery Powered Headphone Amp. Built from a solid block of mahogany, the RA-1 uses a pair of audiophile op-amps with high-current output capability and wide bandwidth to deliver true, clear and lifelike sound into your headphones. Two nine-volt batteries will drive the amp for a full 40 to 50 hours. Just hook it up to any line source -- portable or in the home -- and luxuriate in the warm, smooth, and full-bodied sound that has built Grado's world-wide reputation for high-quality headphones.

What's in the Box
Grado RA1 Headphone Amplifier, user's guide, and registration card.


Customer Questions & Answers

Customer Reviews

3.3 out of 5 stars

Most Helpful Customer Reviews

31 of 41 people found the following review helpful By banzairun on May 8, 2010
This sounds similar to some of the Altoids amps that hobbyist began making in the 1990s. It is made up of cheap opamps in a fancy wooden cigar box but it's still better than the headphone jack of most components. The hobbyists that made those Altoids amps (literally in little tin Altoids mints boxes) continued to revise, improve, use newer opamp chips, and better components... so this headphone amp is not nearly as good as those are. Avoid.
[spelling corrected - Thanks, internet! -ed]
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10 of 12 people found the following review helpful By Darren La Salle on December 14, 2010
Since discovering Grado Headphones, I find that I HAVE to keep mine with me when I am out on the road. I find this unit to be the only way to travel with my power hungry cans.

This little mahogany wood unit does a great job substituting for my home set up. It does not alter the sonics nor does it skimp on providing the power of my home setup. In short, it keeps me happy and looks good doing it. Highly recommended.
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13 of 17 people found the following review helpful By ACE on December 4, 2010
I think most of the negative press comes from those using the Grado RA1 with phones other than Grado, and I'm not going to say they're wrong. The RA1 is an excellent choice with Grado phones. I'm using one with the GS1000 and it's a great match. It's pretty much common knowledge in the audio community that Grado headphone amps are optimized for Grado headphones, just as Grado phono preamps are best suited for Grado cartridges.
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16 of 24 people found the following review helpful By Yasin Cakal on October 31, 2010
Ok, this is a little better than the sound card in my macbook pro. My apogee one audio interface is almost as good. But neither one is made for powering headphones like AKG K702 or DT990 Pro which are my 2 favorites. I bought this knowing Grado is a good, well respected brand. Sadly, I had to return it. It seems whatever you spend on a headphone, you have to spend at least double on amps to get good sound out of them. Honestly if you are spending 350 on this, move up to the NuForce HDP for 450. It is the absolute best value for the buck. I got one of those because my budget was under $500 for headphone amps, and the good thing is the NuForce HDP gives you preamp, amp, and DAC all in one. If you are buying any headphone over $100, be prepared to spend at least $500 to get the best sound out of them.
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2 of 3 people found the following review helpful By Honest Opinion - hacker. on May 25, 2012
Straight a/b between iPhone output & iPhone through this amp. Worth every penny - to the kind of person who owns Grado 325's. There may be better / cheaper ways to achieve the same improvement, but I don't have a ton of time to experiment. This amp sounds fantastic with Grado 325's. Ignore the haters about the look. It's a good conversation starter on planes. No one ever says 'I don't understand why you carry all this gear around' - they ask you how much it cost, because they want it.
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