The OEAudio HA2 is a compact, high-performance balanced DAC and headphone amplifier based on two Cirrus Logic CS43131 chips, with a USB-C input and a 2.5mm jack output (4 poles jack compatible). Its design allows it to provide a rich sound and a beautiful sound stage. The circuit is integrated in a CNC machined chrome-plated brass case, also ensuring the role of shielding against electromagnetic interference. On the power side, the HA2 is capable of delivering 138mW and is therefore perfectly suited to most in-ear monitors on the market.