Fosi Audio Box X3 Bluetooth Vacuum Tube Phono Preamp
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Fosi Audio Box X3 Bluetooth Vacuum Tube Phono Preamp
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Shipping Information
We offer free worldwide shipping, except for certain regions such as Ukraine and Russia, where our services are currently unavailable.
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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
80W Toroidal Transformer
Custom pure copper toroidal transformer with up to 100W peak output ensures stable power delivery, even with three devices connected.
Nippon Chemi-Con Capacitors
Premium capacitors help minimize ripple and noise, with ripple as low as 0.1mV.
High-Reliability Rectifier
A GBU806 rectifier bridge rated at 600V/8A ensures fast, stable AC-to-DC power conversion.
4-Core Regulation
Powered by three LM1085IT and one ST78M05 linear regulators from Texas Instruments.
Product details
Description
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The Fosi Audio BOX X3 is a state-of-the-art phono preamp that uses Bluetooth 5.0 5725W tube technology for superior audio quality. This 2-in-1 preamp serves as both an MM turntable preamplifier and a Bluetooth 5.0 preamp, making it an essential component for the modern audiophile
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The tube phono preamp improves the audio quality of your MM turntable by converting the phono signal to a more manageable line level, resulting in better sound and increased volume levels for your home audio system
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Upgrade your home audio setup with the BOX X3 Bluetooth 5.0 tube preamplifier. With a 3.5mm line input, easily connect your latest devices for wireless Hi-Fi music streaming to powered speakers. Please note that an amplifier is required for passive speakers
- Experience exceptional sound quality with the BOX X3 phono preamp's ultra-low noise performance. Featuring 5725W vacuum tubes, this preamp produces a clean and warmer sound, allowing for perfect replication of your vinyl records' music. The built-in phono preamp circuitry is designed with high accuracy and conforms precisely to the RIAA standard, so you can enjoy a flawless listening experience every time
- What You Get: BOX X3 mm phono preamp x1, 5725W Vacuum tubes x2, Bluetooth Antenna x1, power adaptor x1, user manual x1. Please note that the BOX X3 preamplifier is a Bluetooth receiver only
Specifications
| Specifications | Details |
|---|---|
| Model | BOX X3 |
| Input Interface | RCA + 3.5MM AUX + Bluetooth |
| Output Interface | RCA output |
| Output | Active(powered) speakers, Amplifier |
| Frequency Response | Standard RIAA |
| THD | ≤ 0.1% |
| SNR | ≥ 98dB |
| Product Weight | 0.71 lb/320g |
| Device Dimension | 4.66 inch/3.85 inch/1.29 inch |
| DC Input Range | 12V |
| Input Voltage Range | AC 100V - 240V |
| Output Voltage Level | 650 mV @3mV 1kHz |
| Power Supply | 12V 1.5A |
What‘s in the box？
| Item | Quantity |
|---|---|
| Box X3 Phono Preamp | x 1 |
| 5725 Vacuum Tubes | x 2 |
| 12V 1.5A Power Adapter | x 1 |
| User’s Manual | x 1 |
Notice:BOX X3 is only a preamplifier, not an amplifier, can not be connected with passive speakers directly, If you need to connect BOX X3 with passive speakers, you need to connect it with an amplifier then connect the amplifier with your passive speakers.
Specifications
Power Input
AC: 115V / 230V
Note:
115V setting supports 100–120V input
230V setting supports 220–240V input
Power Output
DC 1: 12V / 15V (Rated Power: 20W)
DC 2: 12V / 5V (Rated Power: 15W)
USB: 5V / 1A (Rated Power: 5W)
Operating Temperature
-20 ~ 40°C (-4°F ~ 104°F)
Temperature Rise Test
Temperature rise of 25°C (77°F) at full load
What‘s in the box？
- Fosi Audio PSU20*1
- 1.2m (47.2 in) DC-DC Power Cable*1
- 0.3m (11.8 in) DC-DC Power Cable*1
- User Manual*1
- AC Power Cord*1