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” The Questyle QP1R is a no-frills music player that delivers excellent audio quality. I could easily hear the differences between my Audeze and Sennheiser headphones, and the QP1R delivered much of the amplification performance of the desktop CMA800i DAC/headphone amplifier. The desktop unit had a bit more punch and control with the larger headphones; however, with the more sensitive IEMs, the QP1R kept pace with its bigger brother.”