Rolls HA43 Pro Headphone Amplifier Mixer

by Rolls

Product Features

• Full frequency response
• AC adapter included
• Slider volume controls
• Single input, four output headphone amps

Product Details

• Item Weight: 2 pounds
• Shipping Weight: 1.4 pounds (View shipping rates and policies)
• ASIN: B00102ZOQC
• Item model number: HA43
• Average Customer Review: 4.4 out of 5 stars  See all reviews (7 customer reviews)
• Amazon Best Sellers Rank: #23,063 in Musical Instruments (See Top 100 in Musical Instruments)
  • #83 in Electronics > Accessories & Supplies > Audio & Video Accessories > Headphone Accessories > Amps

Product Description

The four channel Rolls HA43 Pro headphone amplifier is for expanding or generating headphone channels. The HA43Pro drives up to four pairs of stereo headphones for high quality audio monitoring. The unit is intended for sound reinforcement, studio, choir, install, and other applications where a smaller size is desired without sacrificing audio quality. The HA43 Pro features a 1/4 inch and RCA stereo inputs, four volume controls, four 1/4 inch and 1/8 inch stereo output jacks and is powered by an AC adapter (included). The portable HA43 Pro has a 20Hz - 20K Hz response and is very easy to use. Rolls H43 Pro Headphone Amplifier Features Single input (1/4 inch stereo TRS jack and dual RCA jacks) Four output headphone amplifier (1/4 and 1/8 inch (3.5mm) TRS stereo jacks) Slider volume controls AC adapter included Full frequency response Lots of output level, it's loud.

Customer Reviews

Most Helpful Customer Reviews

13 of 13 people found the following review helpful:

5.0 out of 5 stars High-quality and versatile, but the Pro edition is even better, September 3, 2008

By 

zemes - See all my reviews

This review is from: Rolls HA43 Pro Headphone Amplifier Mixer

First of all, please note that they make two different versions of this thing. Make sure that you're getting the "Pro" version, which is not presently offered at Amazon.com, but sold by some vendors at very similar prices. The difference is that (1) the Pro version has both 1/4 and 1/8 (3.5mm) jacks for each channel, while the non-pro version has 1/8 (3.5mm) only; and (2) the Pro version has both 1/4 and RCA jacks for input, while the non-pro version has only 1/4 not RCA. But other than the connections, both units share the same electronics so should have the same performance.

This is a very well made unit, and can have variety of uses. I currently use it with an HDTV so that several people can watch TV wearing their headsets without disturbing others. The sound quality is top notch and the build quality is also excellent. Other apparent benefits include:

(1) Does not require the home electronics device (TV, for example) to have a headphone output to be used with this headphone amplifier (just to mind you, strangely many TVs don't have a headphone jack).
(2) Does not run the risk of damaging the headphone jack of the electronic device due to frequent plugging and unplugging.
(3) AC powered and does not require a battery.
(4) Has four channels, each with independent volume control.
(5) Can be used by maximum eight people (two headphones per channel).

Another thing worth noting is that, because this is an external microphone amplifier, it behaves quite differently from the headphone jack built-in the TV (or any other electronic devices). The microphone amplifier and the headphone(s) are essentially independent from the TV audio control. This has its inconvenience but also has its advantages. In the following, I'll list a few things. These may either be a plus or minus depending on your habits and use.

(1) Using an external headphone amplifier like this does not mute the TV speakers automatically like using a built-in headphone jack usually would. I personally found this to be an advantage because it allows you to leave the headphone plugged in all the time without the trouble and confusion of frequently plugging and unplugging the headphone. When you don't use the headphone, just put it down and watch your TV as you usually would. Sure the headphone would be working all the time, but headphones don't consume much power and don't really get worn by merely carrying a signal. Practically, if you're not wearing a headphone, you are not really using it. I leave my headphone plugged in all the time. The only time I think about it is when I pick it up to use it. How convenient. If you have frequently used a headphone, you would admit that the biggest hassle is to find your headphone every time when you need it, plug it in to use it, and unplug it after you're done. Having got used to my "perpetual headphone" with the external headphone amplifier, I would never go back to that business again.

(2) On most consumer electronics such as TVs, the volume control does not affect the line output, and thus does not affect the output signal level sent to the external headphone amplifier. As a result, the volume control on your TV does not affect the volume you here on the headphone. This again can either be a negative or positive depending on your use. You will need to manually adjust the volume of your headphones using the volume controls on this unit itself, which is somewhat inconvenient because it does not come with a remote control. But on the other hand, the fact that you can adjust the TV speaker volume independently (including completely turning it off by setting the volume to zero), could be a plus. For example, say you have a bunch of people watching TV while talking to each other making a noisy environment. You can plug in a sound insulating headphone into this unit to get much better sound from the TV program without having to change the TV volume or mute it to affect others. With a traditional built-in microphone jack, it's an either-or fight and you can't have both.

5 of 5 people found the following review helpful:

5.0 out of 5 stars I love this beefy little amp!, June 30, 2008

By 

S. E. Ellis (Houston Tx USA) - See all my reviews
(REAL NAME)   

This review is from: Rolls HA43 Pro Headphone Amplifier Mixer

I've used this little amp for about 4 years now with a set of Sennheiser HD280Pro's. I use this with my computer at work to let me switch between headphones and my desktop speakers and it helps boost normal PC audio to new levels. I can get rich bass and as well as very high treble. More than a few times I've heard parts of music that I've never heard while listening to it anywhere else.

Once I even had the bass so well tuned that it rattled the coffee I was drinking in my mouth. It's a great buy and works quite well at work for me.

I've had a number of people ask what is that and where can I get it? I'm glad Amazon has it now.

4 of 4 people found the following review helpful:

5.0 out of 5 stars The Rolls Royce of Headphone Amps, July 22, 2008

By 

John L. Ebel (Nashua, NH) - See all my reviews
(REAL NAME)   

This review is from: Rolls HA43 Pro Headphone Amplifier Mixer

This headphone amp is small, good looking, and extremely well built. It feels and looks like it was made by the Swiss or Germans. Each of the four channels has its own volume control with outputs for 1/4" or 1/8" plugs. Inputs are 1/4" or RCA phono plugs. The sound is superb. I have it connected to my new HDTV.
I watch Classical, Opera, and Jazz DVD's. I'm glad I found this unit. You won't be disappointed.