The highly popular Pilot portable DAC (digital-to-analogue converter) and headphone amplifier from ALO Audio, who are also known as Campfire Audio. The new, second version features a 4.4mm balanced output and offers even lower distortion and higher sampling rate than before. In addition to its discreet appearance, its main features are its powerful sound quality and MQA support, all powered by an ESS Sabre 9281AC Pro chip. To boost the output signal, a button is available to increase the continuous power from 2.2Vrms to 3.3Vrms.