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Grado RA1 Battery Powered Headphone Amplifier

3.0 out of 5 stars 9 customer reviews

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 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.


Product Information

Product Dimensions 14 x 10.5 x 2.7 inches
Item Weight 2 pounds
Shipping Weight 2.9 pounds
Manufacturer Grado
ASIN B00076VEGG
Item model number RA1 BATTERY
Customer Reviews
3.0 out of 5 stars 9 customer reviews

3.0 out of 5 stars
Best Sellers Rank #364 in Electronics > Accessories & Supplies > Audio & Video Accessories > Headphone Accessories > Amps
Date first available at Amazon.com April 13, 2004

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

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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This sounds similar to some of the Altoids amps that hobbyists 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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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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Verified Purchase
Bought this full expecting to return it due to the bad reviews talking about the build cost. Well, 1st things 1st..the amp is GORGEOUS looking and feeling. Well made on the outside. It looked gorgeous on my desk. Small but solid and doesn't slide around like I thought it would. It has enough heft to sit and stay. I am listening right now as I type this with Grado PS-500's and the sound is liquid, compelling, full, sexy, sweet, dripping with goo and so so so drawing me into the music.

I have a history with high end audio as my old home system was a $25,000 setup for stereo only. An amp, CD player and speakers. I sold that 2 years ago and now have been trying to find a perfect headphone setup. So far I have tried HD800's, HD598's, T1's, and MANY lower end Apple store and Best buy cans (which all were awful).

I found the PS-500's which I love and they have THE sound I was looking for. I was running them with a dacmagic dec and a Fiio amp. They sounded good. I added the RA-1 and the sound jumped from a bit etchy and trebly to smooth, liquid, full and gorgeous. This little box may have been made with cheap innards but there is a reason it has been selling for a LONG time as is. It works amazingly well with GRADO cans. Period. Can you get better for $350? Im sure you could but right now I do not care as the sound I am getting is magical and EXACTLY what I like, and the RA1 is a beautiful and SIMPLE amp. I like it but wish I bought the AC version as I see myself going through batteries quickly.

$350 is not bad for what you get sound wise, if you are using Grado headphones. I've had high end head amps as well, but this is basic and simple and it works.
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I wired this to my imac to listen to my Grado headphones. There is a fullness, not volume, but full sound. I also have a pricey set of B&Ws to compare. I dont regret the purchase. Not to mention the mahogany amp looks good on my desk.
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