--- product_id: 300855416 title: "Fosi Audio BOX X1 Phono Preamp for MM Turntables with 3.5MM Headphone and RCA Output, Mini Phono Preamplifier with Power Switch for Phonograph/Record Player, DC 12V Power Adapter Included" brand: "fosi audio" price: "¥13162" currency: JPY in_stock: true reviews_count: 13 category: "Fosi Audio" url: https://www.desertcart.jp/products/300855416-fosi-audio-box-x1-phono-preamp-for-mm-turntables-3 store_origin: JP region: Japan --- # Stable 12V DC power supply Ultra-low noise for pristine sound Versatile RCA & 3.5mm outputs Fosi Audio BOX X1 Phono Preamp for MM Turntables with 3.5MM Headphone and RCA Output, Mini Phono Preamplifier with Power Switch for Phonograph/Record Player, DC 12V Power Adapter Included **Brand:** fosi audio **Price:** ¥13162 **Availability:** ✅ In Stock ## Summary > 🎶 Elevate your vinyl game with BOX X1 — where classic warmth meets modern precision. ## Quick Answers - **What is this?** Fosi Audio BOX X1 Phono Preamp for MM Turntables with 3.5MM Headphone and RCA Output, Mini Phono Preamplifier with Power Switch for Phonograph/Record Player, DC 12V Power Adapter Included by fosi audio - **How much does it cost?** ¥13162 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/300855416-fosi-audio-box-x1-phono-preamp-for-mm-turntables-3) ## 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 - • **Rugged & Reliable:** Encased in durable black anodized steel, built to protect your turntable and last through countless listening sessions. - • **Flexible Connectivity:** Simultaneously power your speakers and headphones with RCA line and 3.5mm outputs for ultimate listening freedom. - • **Peace of Mind Included:** Comes with a 24-month warranty, 12V power adapter, and dedicated customer support to keep your vinyl journey smooth. - • **Seamless Vinyl Revival:** Effortlessly converts phono signals to line-level with ultra-low noise, preserving every groove's warmth. - • **Audiophile-Grade Clarity:** Delivers a clean 2V max output with 70dB SNR and ≤0.08% THD for crystal-clear, distortion-free playback. ## Overview The BOX X1 is a compact, ultra-low noise MM phono preamplifier designed for vinyl enthusiasts seeking high-fidelity sound. Featuring a stable 12V DC power supply, it delivers up to 2V output with a 70dB signal-to-noise ratio and less than 0.08% total harmonic distortion, conforming to RIAA standards. Its versatile RCA and 3.5mm outputs allow simultaneous speaker and headphone use, all housed in a durable steel case with grounding protection. Included are a power adapter, user manual, and a 24-month warranty, making it a reliable and professional-grade addition to any turntable setup. ## Description Product Description BOX X1 MM Phono Preamplifier Fantastic Phono Preamplifier Creates Warm, Smooth Sounding. BOX X1 Phono Preamplifier with V3 Amplifier Input: Turntable, Grounding post, 12V DC input Output: Headphone 3.5MM, RCA DC Input Voltage: 12V Output Voltage Level: 2V max (P-P) at 10K Ohms Ideal match turntable Compatible with headphones Unmatched experience Comparison BOX X1 BOX X2 BOX X4 BOX X5 P3 P4 ZP3 Review: Great Little Box - Bought the Fosi Audio Box X1 as it seemed to be highly regarded as a good budget preamp option and so far it works perfectly! It's quite compact and very simple to use (only has an on/off button and then inputs/outputs at the back) and paired with my Edifier R1280T active speakers (would highly recommend those too if you don't want to break the bank) it sounds incredible! Review: Great - For the price, a perfect little preamp that functions really well and is small enough to not be in the way. Works well with my turntable and Edifyer speakers. ## Features - ✅Hassle-Free Playback - The BOX X1 is an ultra-low noise phono preamp that seamlessly converts phono signals into line-level signals, featuring a grounding post for optimal turntable protection. - ✅Exceptional Audio Quality - Equipped with a high-quality DC12V power supply, this MM phono preamplifier offers reliable and stable performance, delivering an output voltage level of 2V max (P-P) at 10K Ohms, an SNR of 70dB, and THD of ≤0.08% @ 1kHz and 3mV, while conforming precisely to the standard RIAA frequency response. - ✅Versatile Connectivity - The phono preamp provides MM turntable input, RCA line output for powered speakers, and a 3.5MM headphone output, allowing simultaneous use of RCA line output and AUX headphone output for maximum flexibility. - ✅Perfect Integration - Designed for vinyl record enthusiasts, this phono preamp ensures accurate sound replication with its built-in low-noise phono preamp circuitry, conforming precisely to the RIAA standard, and encased in a durable black anodized steel case for reliable and rugged audio transmission. - ✅What's Included - With the BOX X1 phono preamp, you receive a 12V power adapter, user manual, worry-free 24-month warranty, and friendly customer service. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08TLRPMDC | | Best Sellers Rank | 2,128 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 1 in Home Audio Preamplifiers | | Brand | Fosi Audio | | Country Of Origin | China | | Customer Reviews | 4.5 out of 5 stars 1,950 Reviews | | Included Components | Power Supply | | Item Dimensions | 18 x 13 x 6 centimetres | | Item dimensions L x W x H | 18 x 13 x 6 centimetres | | Manufacturer | Fosi Audio | | Manufacturer Part Number | BOX X1 | | Material | steel | | Maximum Supply Voltage | 12 Volts (DC) | | Maximum supply voltage | 12 Volts (DC) | | Minimum Supply Voltage | 12 Volts | | Minimum supply voltage | 12 Volts | | Model Number | BOX X1 | | Mounting Type | Freestanding | | Mounting type | Freestanding | | Number of Channels | 1 | | Package Type Name | box | | Product Warranty | 24 months | | Specification Met | RoHS | | Voltage | 12 Volts | ## Product Details - **Item dimensions L x W x H:** 18 x 13 x 6 centimetres - **Manufacturer:** Fosi Audio - **Maximum supply voltage:** 12 Volts (DC) - **Minimum supply voltage:** 12 Volts - **Voltage:** 12 Volts ## Images ![Fosi Audio BOX X1 Phono Preamp for MM Turntables with 3.5MM Headphone and RCA Output, Mini Phono Preamplifier with Power Switch for Phonograph/Record Player, DC 12V Power Adapter Included - Image 1](https://m.media-amazon.com/images/I/512kyOt5zaL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: How to adjust speaker volume (BOX X1)？** A: The speaker volume is controlled through the volume knob on the speakers. **Q: Is the DC input jack center-negative or center-positive (BOX X1)?** A: It is a center-positive connector. **Q: What is the gain (in dB) of BOX X1?** A: The gain of the BOX X1 is 35 dB. **Q: Can this be used with a moving coilcartridge?** A: No,this is a MM phono preamp only. **Q: Can this work with my turntable andheadphones?** A: Yes,The BOX X1 is designed with 3.5MM headphone output. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great Little Box *by R***. on 26 April 2024* Bought the Fosi Audio Box X1 as it seemed to be highly regarded as a good budget preamp option and so far it works perfectly! It's quite compact and very simple to use (only has an on/off button and then inputs/outputs at the back) and paired with my Edifier R1280T active speakers (would highly recommend those too if you don't want to break the bank) it sounds incredible! ### ⭐⭐⭐⭐⭐ Great *by M***Y on 18 June 2026* For the price, a perfect little preamp that functions really well and is small enough to not be in the way. Works well with my turntable and Edifyer speakers. ### ⭐⭐⭐⭐ Simple, Good-Sounding Phono Preamp with Easy Bluetooth Setup *by M***E on 23 February 2026* The Fosi Audio BOX X1 with an MM turntable, feeding a Bluetooth transmitter which then connects to my Roth VA4 active speakers. Setup was very easy and worked first time. The turntable goes into the BOX X1, then out to a UGREEN Bluetooth transmitter (set to transmit mode), which pairs wirelessly with the speakers. No apps, no screens, no messing around, just buttons and LEDs. Once paired, it reconnects automatically. Sound quality is better than I expected for the price. The BOX X1 is quiet, with no noticeable hum or noise in my system, and it does a perfectly good job of phono amplification. Over Bluetooth, the sound remains clear and balanced. Yes, Bluetooth is technically lossy, but in real listening terms the loss is mostly academic. I wouldn’t notice it unless I was directly A/B testing against a wired connection. There is a small amount of Bluetooth delay, but in a vinyl-only setup this doesn’t matter at all. It has no impact on listening enjoyment. Overall, this is a very good value phono preamp. Paired with a modern Bluetooth transmitter, it’s a practical and affordable way to get vinyl playing wirelessly without sacrificing sound quality in any meaningful way. Pros • Easy to set up • Clean, quiet sound • Great value for money • Works well with Bluetooth transmitters Cons • MM cartridges only • Bluetooth is technically lossy (but not an issue in practice) I’d happily recommend this to anyone looking for a simple, budget-friendly phono preamp. ## Frequently Bought Together - Fosi Audio Box X1 Phono Preamp for MM Turntable Mini Stereo Audio Hi-Fi Phonograph/Record Player Preamplifier with 3.5MM Headphone and RCA Output with DC 12V Power Supply - Tan QY 2RCA to 2RCA Cable 3Ft, Gold-Plated 2 RCA Male to 2 RCA Male Stereo Audio Cable for Home Theater, HDTV, Gaming Consoles, Hi-Fi Systems (3Ft/1M) - 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/300855416-fosi-audio-box-x1-phono-preamp-for-mm-turntables-3](https://www.desertcart.jp/products/300855416-fosi-audio-box-x1-phono-preamp-for-mm-turntables-3) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-12*