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| Amplifier Type | Class AB |
|---|---|
| Drivers | 2.75" Aramid fiber woofers, 0.75" silk dome tweeters |
| Bluetooth Version | 5.0 |
| USB Input | Yes |
| SNR | >95dB (typical A-weighted) |
| THD+N | <0.05% at all power settings |
| Input Impedance | 10K ohms unbalanced |
| Protection | Output current limiting, thermal over-temperature, power on/off transient protection |
| Type | Bookshelf Speakers |
| Inputs | 3.5mm, RCA, USB, Bluetooth |
| Bluetooth Codec | aptX, AAC, SBC |
| Power Requirements | 100-240V, 50/60Hz |
| Finish | Walnut |
| Outputs | Variable line-out |
Essential safety instructions and warnings for using the Audioengine HD4.
Steps for unpacking the speakers and completing the initial setup process.
Instructions for establishing a wireless Bluetooth connection.
Procedure for pairing multiple Bluetooth devices with the HD4.
Connecting devices via wired audio cables and USB computer input.