--- product_id: 248962916 title: "Fosi Audio Box X2 Phono Preamp, Mini Stereo Audio Hi-Fi Preamplifier with Gain Gear, Pre-Amplifier for MM Turntable Phonograph and Record Player, with DC 12V Power Supply" brand: "fosi audio" price: "¥31922" currency: JPY in_stock: true category: "Fosi Audio" url: https://www.desertcart.jp/products/248962916-fosi-audio-box-x2-phono-preamp-mini-stereo-audio-hi store_origin: JP region: Japan --- # Ultra-low noise circuitry Versatile RCA & AUX connectivity 3 switchable gain modes (39/42/45 dB) Fosi Audio Box X2 Phono Preamp, Mini Stereo Audio Hi-Fi Preamplifier with Gain Gear, Pre-Amplifier for MM Turntable Phonograph and Record Player, with DC 12V Power Supply **Brand:** fosi audio **Price:** ¥31922 **Availability:** ✅ In Stock ## Summary > 🎵 Elevate your vinyl game with warm, customizable sound perfection! ## Quick Answers - **What is this?** Fosi Audio Box X2 Phono Preamp, Mini Stereo Audio Hi-Fi Preamplifier with Gain Gear, Pre-Amplifier for MM Turntable Phonograph and Record Player, with DC 12V Power Supply by fosi audio - **How much does it cost?** ¥31922 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/248962916-fosi-audio-box-x2-phono-preamp-mini-stereo-audio-hi) ## Best For - fosi audio enthusiasts ## Why This Product - Trusted fosi audio brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Tube-Driven Warmth:** Replaceable vacuum tubes let you personalize your audio signature with rich, warm tones. - • **Tailored Sound Control:** Three precise gain settings let you customize volume and depth for any room vibe. - • **Plug & Play Versatility:** Seamlessly connects MM turntables to active or passive speakers with multiple input/output options. - • **Confidence in Every Spin:** Includes power supply, cables, tubes, and backed by a 24-month global warranty for worry-free listening. - • **Crystal-Clear Vinyl Revival:** Ultra-low noise design ensures every needle drop is pure, immersive sound. ## Overview The Fosi Audio Box X2 is a premium phono preamp designed for MM turntables, featuring ultra-low noise circuitry, three adjustable gain levels (39, 42, 45 dB), and versatile RCA/AUX connectivity. Its replaceable vacuum tubes allow audiophiles to tailor sound warmth and depth, while the included accessories and 24-month warranty ensure a seamless, high-fidelity vinyl listening experience. ## Description This phono preamp converts turntable signals to line-level with low-noise circuitry and three switchable gain modes, optimizing sound quality for any environment. ## Features - ❤Exceptional Utra-Low Noise - Converts phono signals to line-level signals with low-noise integrated circuits and high-quality components to remove low-frequency noise to ensure clear sound quality. Designed with grounding post to protect your turntable. - ❤Three Gain Options - With three switchable gain modes: 39, 42, and 45 dB, you can precisely adjust the volume and sound quality for optimal indoor use, perfect for turntables. Whether you're enjoying your vinyl collection in a quiet study or a lively living room, you'll find the perfect gain setting to enhance your listening experience. - ❤Versatile Audio Connectivity - The BOX X2 preamp offers MM turntable input and 3.5mm RCA/AUX options for different audio inputs. With a dedicated RCA line output to active speakers, you can connect a power amplifier via the RCA output and then connect passive speakers for an immersive audio experience. - ❤Replaceable Tubes - Our tube phono preamp delivers exceptional warm and smooth sound quality, compatible with various models of vacuum tubes such as 6K4, 6J1, 6J4, GE5654, 6AK5, and 66 *In vacuum tubes, among others. You have the freedom to customize your stereo system by easily replacing the vacuum tubes, allowing you to explore and enjoy unique sound profiles as different tubes make distinct audio. - ❤What You Get - phono preamplifier x1, vacuum tubes x2, RCA cable x1, power adapter x1, user manual x1, 24-month global warranty and 24-hour prompt customer service. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07XNTHHBP | | Best Sellers Rank | 1,615 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 1 in Home Audio Preamplifiers | | Box Contents | Power Supply | | Brand Name | Fosi Audio | | Country of Origin | China | | Customer Reviews | 4.5 out of 5 stars 3,342 Reviews | | Item Weight | 0.65 Kilograms | | Manufacturer | Fosi Audio | | Manufacturer Part Number | Box X2 | | Model Number | BoxX2 | | Number of Items | 1 | | Product Warranty | 24 months | | Unit Count | 1.0 count | ## Product Details - **Item dimensions L x W x H:** 11.8 x 9.8 x 3.3 centimetres - **Manufacturer:** Fosi Audio - **Maximum supply voltage:** 12 Volts (DC) - **Minimum supply voltage:** 12 Volts - **Voltage:** 12 Volts (DC) ## Images ![Fosi Audio Box X2 Phono Preamp, Mini Stereo Audio Hi-Fi Preamplifier with Gain Gear, Pre-Amplifier for MM Turntable Phonograph and Record Player, with DC 12V Power Supply - Image 1](https://m.media-amazon.com/images/I/61aDUT1yyPL.jpg) ![Fosi Audio Box X2 Phono Preamp, Mini Stereo Audio Hi-Fi Preamplifier with Gain Gear, Pre-Amplifier for MM Turntable Phonograph and Record Player, with DC 12V Power Supply - Image 2](https://m.media-amazon.com/images/I/71vDrgn91sL.jpg) ![Fosi Audio Box X2 Phono Preamp, Mini Stereo Audio Hi-Fi Preamplifier with Gain Gear, Pre-Amplifier for MM Turntable Phonograph and Record Player, with DC 12V Power Supply - Image 3](https://m.media-amazon.com/images/I/71MS3FnlpnL.jpg) ![Fosi Audio Box X2 Phono Preamp, Mini Stereo Audio Hi-Fi Preamplifier with Gain Gear, Pre-Amplifier for MM Turntable Phonograph and Record Player, with DC 12V Power Supply - Image 4](https://m.media-amazon.com/images/I/71NSYxRhQjL.jpg) ![Fosi Audio Box X2 Phono Preamp, Mini Stereo Audio Hi-Fi Preamplifier with Gain Gear, Pre-Amplifier for MM Turntable Phonograph and Record Player, with DC 12V Power Supply - Image 5](https://m.media-amazon.com/images/I/71htkRqL5IL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: I can connect my headphone but i can’t control the volume. Is it normal ?** A: Yes, it’s only meant to be a connection between amps. I use the headphone output to my Mackie Big Knob volume controller. **Q: How do I control the volume with this preamp is there a remote control I have to buy?** A: Theres no volume control on the Boxx1 unfortunately **Q: Can I plug my audio technia atlp. 60x into this preamp as a better choice than the onboard preamp.then plug into my onkyo home cinema receiver?** A: Depends if the receiver has the option of by-passing the onboard preamp with separate inputs **Q: I have a fosi x2 and a douk st-01. i need a headphone socket. can i add an x1 before the x2 ? or between the x2 and st-01 or should i use y cables?** A: Hello. You don't need to add an X1 before X2, you can connect the audio source to the 3.5mm aux input of the BOX X2 and the rca output of the BOX X2 to the rca input of the st-01, you need an rca to rca cable for this connection. Thank you for your support! ## Frequently Bought Together - Fosi Audio Box X2 Phono Preamp, Mini Stereo Audio Hi-Fi Preamplifier with Gain Gear, Pre-Amplifier for MM Turntable Phonograph and Record Player, with DC 12V Power Supply - Riverstone Audio - Tested/Matched Pair (2 Tubes) 7-Pin JAN 5654W Fully-Tested Vacuum Tubes - Upgrade for 6AK5 / 6J1 / 6J1P / EF95 - JAN 5654W Platinum Grade Pair - Monoprice 1.5ft Premium 2 RCA Plug/2 RCA Plug M/M 22AWG Cable - Black --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/248962916-fosi-audio-box-x2-phono-preamp-mini-stereo-audio-hi](https://www.desertcart.jp/products/248962916-fosi-audio-box-x2-phono-preamp-mini-stereo-audio-hi) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-25*