Photo 1 of Douk Audio U5PRO HiFi Fully Balanced Headphone Amplifier, Mini Stereo Amp for XLR and 4.4mm Headsets, Replaceable Op-Amps, 18-600? Compatibility, 1500mW Output Power

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Photo 1 of Douk Audio U5PRO HiFi Fully Balanced Headphone Amplifier, Mini Stereo Amp for XLR and 4.4mm Headsets, Replaceable Op-Amps, 18-600? Compatibility, 1500mW Output Power