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Iwistao Balanced Headphone Amplifier Hifi Tpa6120a2 Amp 16~600 Ohms 750mw/300 Ohms 6.35 Headphones / Four-core Xlr Output Black - Headphone Amplifier - AliExpress
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Amazon.com: beyerdynamic DT 880 Premium Edition Over-Ear-Stereo Headphones. Semi-Open Design, Wired, high-end (32, 250, or 600 Ohm) (600 OHM, Gray) : Musical Instruments
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Amazon.com: beyerdynamic DT 880 Premium Edition Over-Ear-Stereo Headphones. Semi-Open Design, Wired, high-end (32, 250, or 600 Ohm) (600 OHM, Gray) : Musical Instruments
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LINEP-A929A class portable high impedance headphone amplifier supports 600 ohm aluminum material black - AliExpress
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