---
product_id: 394620872
title: "Fosi Audio Box X2 Phono Preamp for MM Turntable Phonograph Preamplifier with Gain Gear Mini Stereo Audio Hi-Fi Pre-Amplifier for Record Player with DC 12V Power Supply"
brand: "fosi audio"
price: "฿11281"
currency: THB
in_stock: true
reviews_count: 13
category: "Fosi Audio"
url: https://www.desertcart.co.th/products/394620872-fosi-audio-box-x2-phono-preamp-for-mm-turntable-phonograph
store_origin: TH
region: Thailand
---

# Low-noise integrated circuits Tube preamp for warm, smooth sound 3 gain modes (39/42/45 dB) Fosi Audio Box X2 Phono Preamp for MM Turntable Phonograph Preamplifier with Gain Gear Mini Stereo Audio Hi-Fi Pre-Amplifier for Record Player with DC 12V Power Supply

**Brand:** fosi audio
**Price:** ฿11281
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your vinyl vibe with warm tube magic and precision gain control!

## Quick Answers

- **What is this?** Fosi Audio Box X2 Phono Preamp for MM Turntable Phonograph Preamplifier with Gain Gear Mini Stereo Audio Hi-Fi Pre-Amplifier for Record Player with DC 12V Power Supply by fosi audio
- **How much does it cost?** ฿11281 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/394620872-fosi-audio-box-x2-phono-preamp-for-mm-turntable-phonograph)

## 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

- • **DIY Tube Swapping:** Easily replace vacuum tubes (6K4/6J1/6J4/GE5654/6AK5/66*) to personalize your sonic signature.
- • **Low-Noise Clarity:** Advanced integrated circuits minimize low-frequency noise for crystal-clear playback.
- • **Warm Analog Tube Sound:** Experience rich, smooth audio with high-quality vacuum tube circuitry.
- • **Complete Plug & Play Kit:** Includes vacuum tubes, RCA cable, power adapter, and 18-month warranty for worry-free setup.
- • **Customizable Gain Control:** Switch between 39, 42, and 45 dB gain modes for perfect sound tailoring.

## Overview

The Fosi Audio Box X2 is a premium tube-based phono preamplifier designed for MM turntables, featuring three switchable gain modes (39, 42, 45 dB) and low-noise integrated circuits to deliver warm, clear analog sound. It supports multiple vacuum tube types for customizable audio character and comes with all necessary accessories plus an 18-month warranty, making it the perfect entry-level high-end upgrade for vinyl enthusiasts seeking rich, detailed sound.

## Description

Fosi Audio Box X2 Phono Preamp for MM Turntable Phonograph Preamplifier with Gain Gear Mini Stereo Audio Hi-Fi Pre-Amplifier for Record Player with DC 12V Power Supply : desertcart.in: Electronics

Review: Amazing Tube Based Phono Pre-Amp - Exceptional sounding. Tight accurate fast base & larger soundstage than my internal phono stage of the LP60 AT Turntable. It transformed the sound, corrected the center imaging well & just brought out a complete slightly more warmer sound. Equally detailed and warm at the same time. Exceptional device for someone who wants to try tube based pre amps for the first time for their vinyl player.
Review: Excellent - Bought this after lots of research. Decided to buy after watching YouTube video of cheapaudioman. Are perfect phono preamp for enhancing sound of vinyl records. Highly satisfied with the product. My vinyls sound extremely good. Happy with the selecter switch. Can choose the sound output suitable for my ear. Also highly recommended for vinyl lovers who cannot afford high end phono preamp. This one does a perfect job. My amplifier and vinyl player has inbuilt phono preamp. This one exceeded my expectations.

## Features

- ❤Tube MM Phono Preamplifier: Converts phono signals to Line Level Signals with low-noise integrated circuits and high-quality components to remove low-frequency noise and ensure clear sound quality. Designed with a grounding post to protect your turntable.
- ❤Three switchable gain modes: 39, 42, and 45 dB. Adjustable gain levels to give you customizable control and outstanding compatibility. Entry-Level high-end analog sound and top-notch circuitry for an unbeatable low cost.
- ❤Tube Preamplifier: It's also a tube preamp with 3.5mm AUX Input. Designed and assembled by Fosi Audio from high-quality components. Great warm, smooth-sounding.
- ❤Applicable vacuum tube model: 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 X2 phono preamp x1, Vacuum tubes x2, RCA cable x1, power adaptor x1, user manual x1, our worry-free 18-month warranty, and friendly customer service.
- ❤Friendly customer service: support@fosiaudio.com.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07XNTHHBP |
| Batteries Included | No |
| Batteries Required | No |
| Best Sellers Rank | #159,289 in Electronics ( See Top 100 in Electronics ) #19 in Pre-Amplifiers |
| Brand | Fosi Audio |
| Country of Origin | China |
| Customer Reviews | 4.5 4.5 out of 5 stars (3,096) |
| Date First Available | 17 November 2021 |
| Does it contain liquid? | No |
| Generic Name | Fosi Audio Box X2 Phono Preamp for MM Turntable Phonograph Preamplifier with Gain Gear Mini Stereo Audio Hi-Fi Pre-Amplifier for Record Player with DC 12V Power Supply |
| Importer | support@fosiaudio.com |
| Includes Rechargeable Battery | No |
| Item Dimensions LxWxH | 11.8 x 9.8 x 3.3 Centimeters |
| Item Weight | 308 g |
| Item dimensions L x W x H | 11.8 x 9.8 x 3.3 Centimeters |
| Item model number | BoxX2 |
| Manufacturer | Fosi Audio |
| Maximum Supply Voltage | 12 Volts |
| Minimum Supply Voltage | 12 Volts (DC) |
| Model | BoxX2 |
| Mounting Hardware | 1 electronic component amplifier |
| Mounting Type | Freestanding |
| Number of Channels | 1 |
| Number of items | 1 |
| Packer | support@fosiaudio.com |
| Product Dimensions | 11.84 x 9.78 x 3.28 cm; 308.44 g |
| Tuner Technology | DAB |
| Voltage | 12 Volts (DC) |

## Product Details

- **Item dimensions L x W x H:** 11.8 x 9.8 x 3.3 Centimeters
- **Manufacturer:** Fosi Audio
- **Maximum Supply Voltage:** 12 Volts
- **Minimum Supply Voltage:** 12 Volts (DC)
- **Voltage:** 12 Volts (DC)

## Images

![Fosi Audio Box X2 Phono Preamp for MM Turntable Phonograph Preamplifier with Gain Gear Mini Stereo Audio Hi-Fi Pre-Amplifier for Record Player with DC 12V Power Supply - Image 1](https://m.media-amazon.com/images/I/61xsoICTIOL.jpg)

## Questions & Answers

**Q: My turntable has a built-in phono preamp. How do I connect it to the BOX X2?**
A: • If the turntable has a built-in phono preamp, switch it to "Line Out" mode and connect it to the 3.5mm input on the BOX X2. • If the turntable is set to "Phono" mode, connect it to the MM input on the BOX X2 for optimal sound.

**Q: Does the BOX X2 have any built-in tone control? Dose the BOX X2 have bluetooth?**
A: No. The BOX X2 don't have bluetooth. And the BOX X2 features gain control, not tone control. For enhanced tonal shaping, consider using models like BOX X4, which includes treble and bass adjustments. For bluetooth consider using models like BOX X3.

**Q: How to connect a turntable to the BOX X2 and active speakers?**
A: Make sure the turntable has a Phono output with an MM cartridge. Some turntables have a built-in phono preamplifier, set it to Phono switch.

**Q: Can I replace the tubes in the BOX X2?**
A: You can substitute with 7-pin tubes such as 6AK5, 6AK5W, 6Zh1P, 6J1, and 6J1P. These can also directly replace WE-403A, WE-403B, EF95, 6A2 tubes, 5725w tubes and standard 5654 tubes.

**Q: Turntable has built-in preamp/line switch—Can I still use this instead of my built-in preamp?**
A: Yes, deselect the preamp on your turntable. Note: Please confirm whether your turntable has a built-in phono preamp, if there is a phono preamp, and it cannot be deselected, then you can only connect 3.5 mm input, can not connect MM Turntable input.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Amazing Tube Based Phono Pre-Amp
*by R***O on 22 November 2025*

Exceptional sounding. Tight accurate fast base & larger soundstage than my internal phono stage of the LP60 AT Turntable. It transformed the sound, corrected the center imaging well & just brought out a complete slightly more warmer sound. Equally detailed and warm at the same time. Exceptional device for someone who wants to try tube based pre amps for the first time for their vinyl player.

### ⭐⭐⭐⭐⭐ Excellent
*by D***D on 1 January 2025*

Bought this after lots of research. Decided to buy after watching YouTube video of cheapaudioman. Are perfect phono preamp for enhancing sound of vinyl records. Highly satisfied with the product. My vinyls sound extremely good. Happy with the selecter switch. Can choose the sound output suitable for my ear. Also highly recommended for vinyl lovers who cannot afford high end phono preamp. This one does a perfect job. My amplifier and vinyl player has inbuilt phono preamp. This one exceeded my expectations.

### ⭐⭐⭐⭐⭐ Great little piece of equipment
*by N***T on 11 August 2024*

I was using an ART Pre DJ preamp foe a few years and just bought this for fun as the fosi preamp has had some great reviews. Great build quality though the tubes need a bit of care and effort to place them properly. This preamp has been a revelation in all senses. Played some of the best sounding LPs in my collection, Alan Parson iRobot MFSL and few other steely dan albums. The low end has improved significantly, great mid range and normal highs. Might try out new tubes at some point but totally satisfied currently.

## 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.co.th/products/394620872-fosi-audio-box-x2-phono-preamp-for-mm-turntable-phonograph](https://www.desertcart.co.th/products/394620872-fosi-audio-box-x2-phono-preamp-for-mm-turntable-phonograph)

---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-27*