HA543 Headphone Amplifier

Nice sounding, robust, solid build, overall more than satisfied with this unit.Pros: Clean sound; 2 headphones can be used together if necessary; "Enhance" button can really help some lousy headphones sound great. I'm not aware of another amp that is cheaper that has separate, balanced XLR inputs for each channel, in certain scenarios this is a life saver, this feature was very important to me in my setup.Cons: Buttons are quite loud, there's a noticeable pop when muting/unmuting, powering up/down. Amplification level is not that loud, some high impedance headphones may require more juice that this unit might not be able to supply. Only one of the inputs can be monitored at the same time - either XLR or RCA, NOT both at the same time (the internal electronics take care of the switching whichever channel has signal coming in).

Easy to use, good sounding at least, great sounding at best. There is a EQ switch, or button rather; to turn on or off; EQ feature. Two choices of headphone jack inputs, 3.5 and 1/4".Off and on button.

Nice sound, amazing for a hundred bucks...Running balance thru DBX 2231, fed by a a Yamaha s-300 CD player. Listening on Beyer 880’s....

I stay real busy but I had to take a minute to write a review for this product as it really is an amazing value for the money. I've been recording music for over 10 years and was tired of using my headphones without a dedicated headphone amp. I had this weird feeling that they were somehow under powered using the amps that are built into most audio interfaces. So I pulled the trigger on this as the higher end ones didn't seem to offer any real advantages and let me tell you my headphones came to life. Make sure that the signal you feed into this amp ain't too hot but also ain't just an Iphone just straight plugged into via the RCA's. It will still sound great but the trick is to push the input signal just enough to help the unit come alive and dial in the volume at around 1pm or 2pm and wow. I don't use the enhance mode because I'm using to monitor my recorded audio for mixing so I want the fattest yet flattest sound possible and using it like this really worked for me. Thank you Bellari for making a great American Made Product. Cheers.

I have a pair of beyerdynamic dt770 80ohm headphones. certainly above the pay grade of a common sound card but nothing incredible. at max volume it could maybe supply enough power to get to 60db. just dont.

Bellari HA543 Headphone Amplifier unit had an issue when it arrived. I called Rolls Corp. and spoke with Justin. He was extremely helpful and sent a pickup order from UPS within a few minutes. I'm very satisfied with their customer service andlook forward to receiving the unit back in perfect working order.

With a set of Planar headphones I just can not get over how well it sounds with the Enhance button used. I just makes the headphones come alive. I think they have only been out for a few weeks so I just gave it a try when I read the online description. Might not be for everyone, but it was exactly what I was looking for. Best addition to my headphone addiction I have added in quite some time.

Update: This amp has been my favorite since I bought it almost three months ago. It's "broken in", and I still love its dynamic yet non-colored sound. However, it's become more noisy since. When it was new, the noise was barely perceptible--now it's very noticeable at about 65% of the gain control. Oh well...I guess no amp is perfect.This diminutive little champ is the only sub-$100 headphone amp that has balanced outputs that can plug into my studio equipment. I could actually use it to replace the weak 50mW amps they build into audio interfaces these days. It's not going to win any beauty contests, but it consumes very little space so it doesn't stand out.The good: It's small, runs cool and efficiently, has the right input/outputs, and has uncomplicated controls. It also can push my 250 ohm headphones just fine. Distortion levels are low, and its sound seems uncolored.The bad: The mute button makes a loud 'CRACK!' in your ears when you disengage it. (Just leave it alone and remember to turn down the volume knob before you turn on/off the unit.) The case is bottom isn't level, so it teeters on its feet.The ugly: Nothing!The bad.