Recently acquired a portable DAC/amp for use with my MacBook. Although it sounded great, I was getting annoying pops and clicks. Looking for a solution I came across the iFi Silencer+, the low asking price made it easier to take a chance on it. I'm now enjoying pop/click-free audio from my laptop. Better yet, I'm enjoying more pronounced low end and enhanced midrange by virtue of a lower noise floor. Highly recommend this for digital playback from USB sources!