Headphone Amplifier with D/A Converter (USB-C) and Three Headphone Outputs (6.3 mm jack, unbalanced / 4.4 mm Pentaconn, balanced / 4-pin XLR, balanced)
All Stax headphones and in-ear-phones are electrostatic and operate with a push-pull principle. This means that they need to be operated by a Stax amplifier.