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Fosi Audio BOX X1 MM Turntable Phono Preamp
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
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Customer Support
WhatsApp: +8613716612254
support@fosiaudio.com
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FAQ’s
If you have any questions, please refer here: FAQs
Product details
- Converts Phono Signals: Compact ultra-low noise phono turntable preamp that 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 a grounding post to protect your turntable.
- Features Power Switch & 3.5MM Headphone Output: The unique power switch button design is very convenient to use. You can enjoy high-quality music with headphones through the 3.5 mm headphone output. Note: RCA line output and AUX headphone output can be output simultaneously.
- 3.5MM / RCA Output: BOX X1 supports MM turntable input, 3.5MM headphone output, and RCA line output for powered speakers. Note: You can connect a power amplifier through the 3.5MM or RCA output, then connect the passive speakers.
- MM Phono Preamplifier & DC12V Power Adapter: Output Voltage Level: 2V max (P-P) at 10K Ohms, SNR: 70dB, THD: ≤0.08% @ 1kHz and 3mV, Frequency Response: Standard RIAA. Equipped with DC12V high-quality power supply.
- Easy quick setup for all MM (moving magnet) cartridges, Metal Aluminum case protects the unit from vibrations and electromagnetic interference.


Specifications
Specifications | Details |
---|---|
Model | BOX X1 |
Output Mode | 3.5MM headphone output + RCA output |
Input Mode | MM turntable input, Grounding post input, 12V DC input |
Output | Active(powered) speakers, Headphone, Amplifier |
Frequency Response | Standard RIAA |
THD | ≤0.08% @ 1kHz and 3mV |
SNR | 70dB |
Product Weight | 0.35lb/161g |
Device Dimension | 3.94×0.98×2.17 inch |
DC Input Range | 12V |
Input Voltage Range | AC 100V - 240V |
Output Voltage Level | 2V max (P-P) at 10K Ohms |
Power Supply | 12V 1.5A |
What's in the box?
Item | Quantity |
---|---|
Box X1 Phono Preamp | x 1 |
12V 1.5A Power Adapter | x 1 |
User’s Manual | x 1 |
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FAQs
Please read our FAQs page to find out more.
How to: Choose the right banana plug?
- Closed Screw Type. All Fosi amplifiers use standard-sized speaker terminals (4mm pins).
- Easy to wire up and solidly connect to amplifier and passive speaker.
- If they do not fit, use a little force to tighten the plugs.
- Fosi Audio Banana Plugs (Copper, Silver/Gold Plated): http://bit.ly/40Djq0U, https://bit.ly/3MkPL8t
- Please watch tutorial videos: https://youtu.be/6pYhoqDlvNw / https://youtu.be/RGvBgGAwS9k
How to Diagnose Power Supply Failure?
- The following situations may cause this issue
- Case 1: The LED on the power supply does not light up; Case 2: Amp/Preamp does not turn on; Case 3: When plugged into the Amp, both light on the amp & power supply start blinking; Case 4: Amp/Preamp make noise; Case 5: Sound shuts off by itself
- Possible solution
- Check if the power supply is illuminated when plugged into AC by itself.
Plug power supply into a different socket.
Test the adapter with a meter.
Try a different power supply (within a range of DC input).
Test the included power supply on other electrical equipment.
Please watch the tutorial video by clicking on the link provided. https://youtu.be/yCjygS03zTE
What are the differences in power outputs using the 32V and 48V power supplies?
- Using a more powerful power supply can help prevent distortion.
- Enables amplifier to drive larger, more powerful, or higher-impedance speakers.
What is a GaN?
- The GaN supply has a power output of 240W.
- Offers overload and over-temperature protection.
- The 48V 5A GaN power supply is also available on Amazon.