The Arcam MusicBOOST is an innovative accessory designed specifically for the iPhone 6 and compatible with the iPhone 6S, integrating three key functionalities into a compact form: a protective case, a digital-to-analog converter (DAC), and a headphone amplifier, all while doubling as a battery pack. The casing is constructed from a stiff plastic shell with a rubberized back for grip and drop protection. Weighing only 100 grams, it adds minimal bulk to the device—approximately ¾ inch in length and ¼ inch in thickness. The built-in 2800mAh lithium-ion battery provides a substantial power boost, claiming to effectively double the iPhone 6's battery life. The high-quality Burr-Brown DAC enhances audio playback compared to the iPhone's built-in components, supporting high-resolution audio formats and accommodating a range of headphones, primarily efficient in-ear monitors (IEMs). Listening experience with the MusicBOOST reveals a warm, rich sound profile, enhancing the depth and presence of bass, while preserving detail in vocal and instrumental renditions. Setup is straightforward: the iPhone connects through the Lightning port, although this restricts the use of external cables while docked. Control is limited to two buttons for activating the charge and checking battery status via LED indicators. While the MusicBOOST excels in combining these functionalities impressively within its slim design, some users may question the degree of sound improvement relative to its cost, given that the audio enhancement, while notable, may not meet the expectations of those seeking extreme fidelity.
