{"product_id":"fosi-audio-box-x4-mm-turntable-phono-preamplifier-119395-40449241645239","title":"Fosi Audio Box X4 MM Turntable Phono Preamplifier","description":"2021 NEW MODEL: The updated version for BOX X2. Next-generation phono preamp for unrivaled sound quality. MM Phono Preamplifier: The BOX X4 phono preamp supports 3.5MM AUX and MM turntable input, converting phono signals to Line Level signals with low-noise integrated circuits and high-quality components to remove low-frequency noise ensure clear sound quality. Designed with a grounding post to protect your turntable. Tube Headphone Amplifier \u0026amp; Preamplifier: The BOX X4 is designed with a 3.5MM AUX headphone and RCA output, highly useful beyond imagination. Applicable Vacuum Tube Model: 5654W\/6K4\/6J1\/6J4\/GE5654\/6AK5\/66*In vacuum tubes, etc. You can replace the vacuum tubes to DIY your stereo system. Different tubes with different sounds. What You Get: BOX X4 phono preamp, DC 12V power supply, user manual, our worry-free 24-month warranty, and friendly customer service. Specifications Specifications Details Model BOX X4 Applicable headphone types 16 Ω Input Mode MM turntable + 3.5mm AUX Output Mode RCA + 3.5mm headphone output Output Active(powered) speakers, Amplifier, Headphones Frequency Response Standard RIAA THD ≤ 0.1% SNR ≥ 70dB Device Dimension 4.72 x 3.97 x 1.37 inches DC Input Range 12V Input Voltage Range AC 110V - 240V Output Voltage Level 1kHz and 650mV Power Supply 12V 1.5A What‘s in the box？ Item Quantity BOX X4 phono preamp x 1 Vacuum Tubes x 2 DC 12V power supply x 1 User's Manual x 1 BOX X4 User Manual","brand":"Fosi Audio","offers":[{"title":"Default Title","offer_id":54908891824466,"sku":"40449241645239","price":89.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0809\/0950\/0754\/files\/1_23f71b08-8ab3-4646-a3da-62a869a3e11b.jpg?v=1790814506","url":"https:\/\/kurlective.com\/en-us\/products\/fosi-audio-box-x4-mm-turntable-phono-preamplifier-119395-40449241645239","provider":"KURLECTIVE","version":"1.0","type":"link"}