Review on Bellari Audio HA543 Headphone Amplifier by Robert Moloney

Good sound, solid build, overall more than happy with this one Device. Pros: Clear sound; 2 earbuds can be used together if needed; The Enhance button can really help make some crappy headphones sound great. I don't know of any other cheaper amp with separate balanced XLR inputs for each channel, is a lifesaver in some scenarios, this feature was very important to me in my setup. Cons: The buttons are quite noisy, there is a noticeable popping sound when muting/unmuting, switching on/off. The gain level is not that loud, some high impedance headphones may need more power than this unit can provide. Only one of the inputs can be driven at a time - either XLR or RCA, and NOT both at the same time (internal electronics ensure that each channel that receives a signal is switched).