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Amazon.com: FiiO BTR3K Receiver Amplifier Bluetooth Headphone Amp High Resolution Support aptX HD/aptX LL/LDAC for Car Audio/Home TV/Speaker/Smartphones/PC (3.5mm/2.5mm Output) : Electronics
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FiiO BTR3K Hi-Res Bluetooth 5.0 Receiver/Headphone Amp with Dual AK4377A DAC |aptX HD/aptX LL/LDAC Support, for Home TV,Speaker,Car Stereo,Type C Port (3.5mm Unbalanced & 2.5mm Balanced Output) - Newegg.com
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Audio-Technica AT-PHA55BT Bluetooth Headphone Amplifier | Headphone Reviews and Discussion - Head-Fi.org
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