The JA11 is a versatile DAC and headphone amplifier that supports high-resolution audio formats, customizable PEQ settings, and features a sleek aluminum-magnesium alloy construction. It is designed to deliver excellent sound quality and functionality, making it an ideal choice for audiophiles on the go. The JA11 supports high-resolution audio formats up to 384 kHz/32 bit PCM and DSD128, delivering exceptional sound quality that is rarely found in its price class. The JA11 supports microphone input and CTIA/OMTP inline controls, enabling users to make calls, record audio, and even enjoy karaoke sessions. NOTE: some phones may not support microphone input due to operating system limitations.