







Fosi Audio N3 Portable Bluetooth Headphone Amplifier
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Fosi Audio N3 Portable Bluetooth Headphone Amplifier
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
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
Mon-Fri: 3:00 AM - 3:00 PM PST -
FAQ’s
If you have any questions, please refer here: FAQs
Product details
Description
- Versatile Connectivity: Supports both Bluetooth and 3.5mm wired input. Experience high-fidelity, low-latency music anytime and anywhere. Also functions as a desktop Bluetooth receiver and amplifier, making it an ideal partner for HiFi headphones.
- User-Friendly Design: Designed with you in mind. Compact yet equipped with rich adjustment features and easy controls. Features a rotary volume wheel to prevent accidental operation and easy-to-use gain switch and bass boosting toggle.
- High Performance: Incorporates the OPA1656 op-amp, perfectly supporting headphones up to 300 Ohms impedance, ensuring clear and clean sound. Crafted by audio professionals with two decades of expertise, you're guaranteed an immersive experience where no musical detail is left behind.
- Long Battery Life: Powered by a robust 1200mAh lithium battery, the N3 promises up to 10 hours of uninterrupted audio bliss. The isolated power design further ensures consistent and pristine sound quality, letting your music play on without a hiccup.
- Exquisite Craftsmanship: Beyond its stunning looks, the CNC-machined all-aluminum alloy body guarantees durability with a premium touch. Feel the difference in every interaction and rest easy knowing you're backed by Fosi Audio's 24-month warranty.





| Specifications | Details |
|---|---|
| Model | N3 |
| Input | Bluetooth, AUX |
| Output | 3.5mm Headphone Jack |
| Op-Amp | OPA1656 |
| Headphone Impedance | 16-300Ω |
| RMS Power | 138mW @32Ω 15mW @300Ω |
| SNR | 95dB |
| Frequency Response | 20Hz-20kHz |
| THD | 0.001% |
| Bluetooth Codec | SBC |
| Power Supply | 5V/1A |
| Battery | 1200mAh (Up to 10-hour playback time) |
| Weight | 300g |
| Dimensions | 90x50x12mm |
What‘s in the box?
Fosi Audio N3 Headphone Amp x 1, Type-A to Charging Cable x 1, User’s Manual x 1
N3 User Manual
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














