Fosi Audio Hifi Phono Preamp BOX X4 Turntable Phonograph Preamplifier With 5725W Vacuum Tube Amplifier Note 1.Due to limited availability of vacuum tubes, we will randomly ship either 5725W or 6J1 vacuum tubes. 2.BOX X4 is only a preamplifier, not amplifier, can not be connected with passive speakers directly, If you need connect BOX X3 with passive speakers, you need to connect it with an amplifier then connect the amplifier with your passive speakers. Features: Fosi Audio BOX X4 is a Hifi tube phono preamp and headphone amplifier for MM turntable that features Volume control and Bass/Treble control with DC 12V power supply. The BOX X4 supports MM turntable input, 3.5mm AUX input and 3.5mm headphone output and RCA line output for powered speakers or amplifiers for your home audio system. Compact ultra-low noise phono turntable preamp that converts phono signals to line level signals. The BOX X4 equipping with 5725W vacuum tubes stands up to the test and will provide you with serious sound performance.We offer 24-month worry-free warranty and friendly customer service. Highlight: Model: BOX X4 Power Adapter Output: 12V Product Adapter Input Voltage Range: AC 100V - 240V Output Voltage Level: 1kHz and 650mV SNR ≥ 70dB THD ≤ 0.1% Frequency Response: Standard RIAA Product Weight: 0.71 lb/320g Product Dimensions: 3.97x4.72x1.37 inch (10.09*12*3.5 cm) Input Mode: MM turntable input +3.5mm AUX Output Mode: RCA output + 3.5mm headphone output Applicable headphone types: 16 Ω - 300 Ω Package Include: *Box X4 Phono Preamp x1 * 5725W/6J1 Vacuum Tubes x2 *12V Power Adaptor x1 *User Manual x1 1. About Payment We accept payment via Alipay, Paypal. All major credit cards are accepted through secure payment processor ESCROW. 2. About Shipment Worldwide shipping (Except some countries and APO/FPO); The following regions cannot deliver: Spain: postcodes starting with 51, 52, 35, 38 or 07. If the consignee address is belong to the above areas, please do not place order, the parcel cannot be delivered. thank you. If you have not received your shipment within 30-60 days from payment, please contact us. We will track the shipment and get back to you as soon as possible with a reply. Our goal is customer satisfaction! 3. About Return & Refund If you are not satisfied with the product you received, please contact us first before open a dispute. We will respond and help to solve the problem once we receive your message. 4. About feedback Our success depends on your satisfaction, so your feedback is very important to us. If you are satisfied with our products and services, please leave us positive feedback. please contact us before leaving any negative or neutral feedback, we will work with you to solver any problems. 5. Our Service Warranty: We cover 18 Month warranty for all our products since shipment day. (excluding items damaged and/or misused after receipt). WE DO NOT REPAIR OR REPLACE ITEMS WITH AN EXPIRED WARRANTY. For all your inquiries about our products, we will reply you in detail within 24 hours. We have well-trained and professional sales & after-sale services persons who can speak English fluently. We offer dropshipping. please contact us if you are interested in dropshipping.

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