{"product_id":"fosi-audio-box-x4-mm-turntable-phono-preamplifier","title":"Fosi Audio Box X4 MM Turntable Phono Preamplifier","description":"\u003cstyle\u003e.product-form, .shopify-payment-button, .product-inventory, .quantity-selector, .price, .product__price, .product__tax, [name='add'], [name='checkout'] { display: none !important; }\u003c\/style\u003e2021 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\u003cdiv style=\"margin-top:40px; padding:30px; border:3px solid #008060; border-radius:15px; text-align:center; background:#fff;\"\u003e\r\n                \u003ch2\u003eAcquista su Fosi Audio\u003c\/h2\u003e\r\n                \u003cdiv style=\"font-size: 32px; font-weight: bold; color: #333; margin-bottom: 20px;\"\u003e89.99 USD\u003c\/div\u003e\r\n                \u003ca href=\"https:\/\/www.awin1.com\/cread.php?awinmid=119395\u0026amp;awinaffid=356591\u0026amp;ued=https%3A%2F%2Ffosiaudio.com%2Fproducts%2Fphono-preamp-headphone-amplifier-with-jan-5654w-vacuum-tubes-for-mm-turntable-phonograph-preamplifier-for-record-player-with-volume-bass-treble-control-hi-fi-pre-amp-fosi-audio-box-x4%3Fvariant%3D40449241645239\" target=\"_blank\" rel=\"nofollow\" style=\"display:inline-block; background:#008060; color:#fff; padding:18px 40px; font-size:20px; font-weight:bold; text-decoration:none; border-radius:10px;\"\u003e\r\n                    GO TO OFFERS\r\n                \u003c\/a\u003e\r\n               \u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Default Title","offer_id":58253164970365,"sku":"40449241645239","price":89.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0937\/0812\/4541\/files\/1_23f71b08-8ab3-4646-a3da-62a869a3e11b.jpg?v=1780690022","url":"https:\/\/search.negozishop.it\/products\/fosi-audio-box-x4-mm-turntable-phono-preamplifier","provider":"Search Negozishop","version":"1.0","type":"link"}