Fosi Audio BOX X2 MM Tube Phono Preamplifier

Fosi Audio BOX X2 Moving Magnet Cartridge Phono Stage Preamp 

Overview

The  Fosi Audio’ BOX X2 is a tube phono preamplifier crafted for vinyl record listeners who appreciate the character and depth of analogue sound. Marrying vacuum-tube warmth with clean solid-state detail, it delivers a presentation that feels natural, dynamic, and deeply musical.

At its heart are low-noise integrated circuits and matched tubes that provide smooth tonal balance and lifelike midrange texture. The BOX X2 Phono-Pre from Fosi Audio supports moving-magnet cartridges and includes a standard RIAA equalisation stage for accurate reproduction of every nuance in your records.

Four selectable gain levels (OFF / 39 / 42 / 45 dB) let you fine-tune the audio output to suit your turntable cartridge or connected amplifier. The design of the Fosi phono preamplifier maintains signal purity and minimises resistor influence, keeping the sound transparent and true.

Connectivity for the BOX X2 is flexible, featuring both RCA phono and 3.5 mm AUX inputs for additional sources such as CD players, DACs, or TV audio. The RCA output feeds active speakers or amplifiers, making integration with existing systems effortless.

The Fosi BOX X2 compact aluminium chassis is lightweight yet robust, with a beautifully understated aesthetic that fits into any home or desktop setup. Swappable tubes allow for tonal experimentation, while the included 12 V power supply ensures stable performance.

For Groove Central listeners, the Fosi Audio BOX X2 tube preamp is more than a phono stage — it’s a bridge between classic and modern audio. It lets you enjoy the authentic warmth of turntable vinyl playback while preserving the clarity and precision of today’s high-fidelity systems.

Key Features

• The Fosi BOX X2 combines vacuum-tube richness with precise solid-state detail for true analogue warmth.

• Its standard RIAA equalisation ensures accurate frequency balance across the spectrum.

• Four selectable gain settings allow perfect matching with a variety of moving-magnet cartridges.

• Low-noise circuitry delivers a clean, detailed signal with wide dynamic range.

• Dual inputs provide versatility for turntables and auxiliary devices.

• Matched JAN 5654W/6K4/6J1 tubes offer smooth, natural sound and can be replaced for custom tuning.

• Compact, lightweight metal housing fits easily into any system while reducing interference.

• Supplied 12 V power supply guarantees stable operation and long-term reliability.

Technical Stuff 

How to Connect A Turntable to Fosi Audio BOX X2 With Active Speakers ... 

For More Information

Visit the manufacturer's website.

Returns Policy

groovecentral.com.au handles returns and processes refunds in accordance with the Australian Consumer Protection legislation.

Should you wish to return your order, please notify us within 14 days of purchase with a valid reason for return. If we are unable to resolve your complaint or further assist you, we will process a refund upon timely receipt of the goods purchased. Unopened goods will be refunded in full. Refunds will be processed promptly and payment made by the same method that you made payment. All refunds are made at the discretion of groovecentral.com.au.

Shipping

Physical goods may be delivered by Australia Post and/or other reputable courier companies. Deliveries are processed promptly upon receipt of full payment. Delivery may take between 2 and 14 days, depending on the delivery option. Damaged or lost orders should be resolved with Australia Post or the courier company directly and we are not responsible for goods that are damaged in transit or not received. Replacement of damaged or lost items is made at the discretion of groovecentral.com.au.

Digital goods are delivered immediately. Please be aware there are inherent risks associated with downloading any software and digital goods. Should you have any technical problems downloading any of our goods, please contact us so we may try to assist you.