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  • ROLLS HA204 Battery Headphone Amp.
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ROLLS HA204 Battery Headphone Amp.

by Rolls

Currently unavailable.
We don't know when or if this item will be back in stock.
  • Stereo 1/8 (3.5mm) Input.
  • Four Stereo 1/8 (3.5mm) Outputs with Level controls.
  • Operates on a single 9V battery, or optional AC adapter.
  • Comes with a single 1/8 to 1/8 adapter cable, and a stereo RCA to 1/8 adapter cable.
  • NOTE - DO NOT PLUG IN THE POWER ADAPTER WHILE A BATTERY IS INSIDE, IT COULD DAMAGE THE UNIT!

Technical Details

  • Brand Name: Rolls

Product Details

  • Shipping Weight: 10.1 ounces
  • ASIN: B00102VX94
  • Average Customer Review: 4.3 out of 5 stars  See all reviews (12 customer reviews)
  • Date first available at Amazon.com: October 2, 2001

Product Description

The HA204 2 x 4 is a handy stereo headphone/earphone amplifier designed to amplify and distribute a stereo line level audio signal to four sets of headphones or earphones. It is the perfect addition to expand the single output of laptop computers, portable game units, portable CD/MP3 players, portable DVD units, and more. The blue tinted,clear plastic packaging makes the HA204 an attractive addition to any mobile setup.

Features:

Mains Power with the PS27

Customer Reviews

4.3 out of 5 stars
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Most Helpful Customer Reviews

8 of 9 people found the following review helpful By The Missing Link on April 11, 2007
I got this because I wanted to be able to plug multiple sets of headphones into one audio source without losing sound quality (as would happen if you just used a splitter plug). I chose this over the [apparently more popular] Boostaroo because this has separate volume controls for each headphone output (the Boostaroo is smaller, though). The Rolls HA204 works great, and as advertised amplifies the volume significantly if you desire (you can control the volume level).

I was also pleasantly surprised by something else... My headphones sounded better when plugged into the Rolls HA204 than when directly plugged into my laptop! It wasn't a night and day difference, but bass sounded punchier and the overall sound was more 3-dimensional.

SAFETY TIP: If you're in a loud place and using the amplifier to hear your music over noise, put in earplugs and then put on your headphones. That way you can still get a decent music-to-noise ratio without damaging your hearing.

By the way, if you want great $20 headphones with good bass, try the Koss KTX-1 Pro's. Koss KTXPRO1 Titanium Portable Headphones with Volume Control If you want $50 heaphones with great bass (after you've broken them in for many hours), try the Sennheiser HD-212's. Sennheiser HD-212 Headphones (Silver)
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4 of 4 people found the following review helpful By Libbia on July 18, 2007
I like listening to audio books at work. Before I bought this product I was plugging my headphones directly into my computer tower. The sound quality was awful, full of background static. The Rolls HA204 makes listening to my computer like listening to my iPod - crystal clear! In addition, I hear perfectly keeping my volume level on the lower end. The cable that comes with the product required a 3.5mm stereo phone plug to two phono RCA jacks in order for me to connect the device to my computer; but, a mere $3 later I have quality sound piping into my ears as I type away on my computer at work.

Right now I am testing the 9-V battery life before I buy an AC adapter.
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2 of 2 people found the following review helpful By C. Williams on June 4, 2007
This thing is awesome. I am very impressed with it. I would recommend everyone to buy this over the boostaroo. It is not as small as the boostaroo but it proforms much better.
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1 of 1 people found the following review helpful By An Engineer VINE VOICE on November 3, 2008
Verified Purchase
Works as epected, a lot of functionality that is an original idea ... but I see a lot of wasted space. The could have used surface mount circuit board to get it smaller. Still if they just make the case smaller and not even change the circuit board it would be even better! Kind of big to carry around but great otherwise. I still recommend this product!
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Verified Purchase
This item did work (unlike a smaller unit we tried). It is big and the battery backing was broken when it arrived, but with some tape it works fine. I take it with me on all the long trips. It works well to have separate volume lines, and it helps overcome the signal loss. I even use it just with me because it makes it easier to hear the voices in movies on the plane. Recommend a case to put this in along with a battery pack to keep the tablet going for those long flights.
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Verified Purchase
Works very well one al my sound equipment and wilth all my head phone and very good that it can be used with battery or AC.
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