ARM2
| Manufacturer | Acoustic Research |
| Function | Amplifier, Headphone (Audiophile-grade high-resolution music player with built-in headphone amplifier), Media Player |
| Country | USA |
| Form Factor | Portable |
| Signal Path | Digital Hardware (including Analog Connections) |
| Notes | Genuine audiophile oriented music-only portable music player Comprehensive high resolution media support (WAV, AIFF, FLAC, ALAC, APE, DSD, and DXD) Audiophile oriented flagship class Burr-Brown PCM1794a DAC Unleash the full potential of high end headphones with best-in-class built-in headphone amplifier 64GB built-in memory plus flexible storage expansion through Micro SDXC Up to 9 hours of continuous audiophile-grade high resolution music playback |