DALI manufactures the best sounding audiophile Bluetooth headphones, the DALI iO series. DALI provides excellent portable personal audio listening with its award-winning Katch battery-powered Bluetooth speaker.
Ferrum Audio manufactures the award-winning ERCO headphone DAC/amp.
iFi is a leading manufacturer of headphone amplifiers, DACs and associated accessories.
Meze Audio is a manufacturer of high end headphones.
Pro-Ject Audio manufactures a range of headphone amplifiers. Several of its other analog and digital electronic components also include high quality built-in headphone amplifiers.