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Donner Amplificatore per cuffie DC 5V-1A, Amplificatore monitor intraauricolare portatile ricaricabile da 3,5 mm con impedenza da 8Ω a 250Ω, con 2 ingressi XLR e TRS da 1/4". Jack micro USB tipo B ， collega il cavo del micro USB tipo B per la ricarica, DC 5V, 1A sopra la corrente.
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LD Systems HPA 4. LD Sytems HPA 4 - un amplificatore per cuffie compatto e potente. Amplificatore per cuffie a 4 uscite. Può gestire fino a 4 cuffie.
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massive Frontblende aus gebürstetem Edelstahl Bluetooth-Schnittstelle 3 Stereo-Cinch-Line-Eingänge .
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FiiO BTR11 Bluetooth 5.3 Receiver LDAC 3.5mm Wireless Audio Headphone Amplifier Adapter. BTR11 supports the LDAC Bluetooth audio format, providing HiFi-level wireless Bluetooth sound quality, and also supports Bluetooth 5.3!
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eBay
The Donner MAMP5 Bluetooth 5.0 Remote Control Stereo Audio Amplifier Receiver is a versatile home theater receiver that supports various modes including CW, FM, AM, and QRP. It features a range of receiver combo features such as a radio tuner, DVD player, digital tuner, Blu-ray recorder, and more. With support for Dolby Atmos and Dolby surround sound formats, this amplifier provides high-quality audio output through multiple channels including digital coaxial RCA, RCA, headphone jack, and more. The sleek black design, along with features like digital inputs and a 1-year manufacturer warranty, make it a top choice for enhancing your audio experience at home.
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eBay