Astell & Kern HC4: Two-minute reviewAstell & Kern is no stranger to digital audio in all shapes and sizes, and the A&K HC4 is its latest attempt to coax worthwhile sound quality from your smartphone or laptop – and for good measure, it’s got strong gaming credentials too.It’s a thoroughly specified little device, from its high-end AKM AK4493S DAC chipset via its balanced and unbalanced headphone outputs to its support for UAC 1.0 as well as UAC 2.0 to
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