It would be interesting to subject it as a headphone amplifier to a series of audio tests to evaluate the effect of a mains transformer over a dedicated audio one.

[ErikaFluff] needed an amp for her Grado open cans. Rather than build yet another boring black box, she built what may be the most awesome headphone amp ever by adding a tiny CRT which displays ...

So, products such as the Astell&Kern ACRO CA1000T desktop headphone amp are usually well beyond my means. However, right now there's a deal on that particular amp that makes it much more ...

the Nait 50 features a 1/4-inch jack headphone jack for private listening sessions. Musical Fidelity released its first-ever ...

FiiO has announced the BTR17, a new portable headphone amplifier built around Qualcomm’s new flagship QCC5181 Bluetooth chip, which not only complies with the Bluetooth LE Audio standard and has ...

this superb little headphone amplifier. The build quality of the Zen ... for connecting something like a smartphone with an audio jack or maybe a Digital Audio Player with a 4.4mm output.

It’s almost impossible to find a smartphone with a 3.5mm headphone jack these days, at least not in flagship phones. There’s also a big market for wireless headphones and earphones which are ...