Free Express Shipping! FiiO KA5 Portable DAC and Headphone Amplifier (Black) For Audiophile Listening On the Go, Dual CS43198 DACs, Dual 8261 Op-Amps, Supports 32-Bit / 768 kHz PCM and DSD256, Crystal-Clear OLED Display, 3.5 and Balanced 4.4mm...