The Audioengine HD4 powered Bluetooth speakers are a mid - sized audio wonder. With a peak power of 120W, they offer extra - loud output. These speakers come with a built - in amp, so no external amplifier is needed. They strike a perfect balance between the full - sized HD6 and the compact HD3 in terms of power and size. The 4' aramid fiber woofer and 0.75' silk dome tweeters with neodymium magnets and advanced voice coils ensure high - quality sound. The aptX Bluetooth 5.0 connectivity has an expanded range and is HD capable. An upgraded PCM 5102 DAC is used for both Bluetooth and USB inputs. You can connect a turntable via the RCA input (a phono preamp might be needed) or a computer via the USB input. The front - panel headphone jack and volume / power knob are very convenient. The removable, magnetic speaker grills add to the functionality. The 18mm thick MDF cabinets have a real wood veneer and a furniture - grade finish. All necessary cables are included, and they are also available in black. Effortlessly fill your living space with true stereo sound. It offers wired or wireless connections for all your music on any app or device. Key features include an analog dual - class A/B amplifier, 120W peak power total, multiple inputs and outputs, specific drivers, a good frequency response, and certain dimensions and weight. Comes with L+R speakers, Bluetooth antenna, AC power cord, various cables, cloth speaker bags, cloth cable bag, and a setup guide.
Using your Audioengine HD4 speakers is a breeze. For wireless connection, turn on Bluetooth on your device and pair it with the speakers using aptX Bluetooth 5.0. For a wired connection, you can use the USB input to connect your computer or the RCA input for a turntable (remember a phono preamp may be required). There's also a 3.5mm mini - jack input. To adjust the volume, simply use the front - panel volume knob. When you want to use headphones, plug them into the front - panel headphone jack. As for maintenance, keep the speakers in a dry place away from direct sunlight and extreme temperatures. Wipe the cabinets gently with a soft, dry cloth. If the speaker grills get dirty, you can remove them (they're magnetic) and clean them carefully. Don't forget to check the cables regularly for any signs of damage. And always follow the safety instructions in the setup guide when using the speakers.
