Photo 1 of SIGMA Pro Bluetooth 5.4 MFi Certified Portable DAC with Headphone Amplifier USB DAC AMP with LDAC,aptX Lossless,PCM768/DSD512 6.35mm/4.4mm/3.5mm Output for for Smartphones/PC/ Home Audio(Black)

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Photo 1 of SIGMA Pro Bluetooth 5.4 MFi Certified Portable DAC with Headphone Amplifier USB DAC AMP with LDAC,aptX Lossless,PCM768/DSD512 6.35mm/4.4mm/3.5mm Output for for Smartphones/PC/ Home Audio(Black)Photo 2 of SIGMA Pro Bluetooth 5.4 MFi Certified Portable DAC with Headphone Amplifier USB DAC AMP with LDAC,aptX Lossless,PCM768/DSD512 6.35mm/4.4mm/3.5mm Output for for Smartphones/PC/ Home Audio(Black)Photo 3 of SIGMA Pro Bluetooth 5.4 MFi Certified Portable DAC with Headphone Amplifier USB DAC AMP with LDAC,aptX Lossless,PCM768/DSD512 6.35mm/4.4mm/3.5mm Output for for Smartphones/PC/ Home Audio(Black)