Need help?Do you have a question about the Fosi Audio N2 and is the answer not in the manual?
Details the function of switches, knobs, and indicator lights on the device.
Lists technical details including audio input/output, power, op amp, and dimensions.
Lists all items included in the Fosi Audio N2 package.
Step-by-step instructions for connecting and operating the headphone amplifier.
Addresses common user questions regarding usage, charging, and performance issues.
Details the product warranty and provides background information on Fosi Audio.
The Fosi Audio N2 is a portable headphone amplifier designed to enhance your audio experience, providing a robust and clear sound for a wide range of headphones. Its primary function is to amplify audio signals from various sources, delivering a more powerful and dynamic output to your headphones, making your music and movies come to life with added punch and clarity.
The N2 serves as an intermediary device between your audio source (such as a mobile phone, PC, or other audio players) and your headphones. It takes the audio signal from the source, amplifies it, and then outputs it to your headphones. This amplification is particularly beneficial for headphones with higher impedance or lower sensitivity, which might not be driven effectively by standard device outputs, resulting in low volume or lack of detail. The N2 ensures that your headphones receive sufficient power to perform at their best, revealing the full dynamic range and intricate details of your audio.
One of the key features of the N2 is its ability to adjust the gain, which is the level of amplification applied to the audio signal. This is controlled by a dedicated gain switch. The N2 offers both high and low gain settings, allowing you to match the amplifier's output to the specific requirements of your headphones and your personal listening preferences. If you find the sound from your headphones to be too quiet even at maximum volume from your source, flipping the gain switch to a higher setting can provide the necessary boost. This versatility ensures compatibility with a wide variety of headphones, from sensitive in-ear monitors to more demanding over-ear models, and ensures that your listening volume needs are adequately met.
In addition to gain control, the N2 also incorporates a bass switch, which allows you to fine-tune the bass levels. Engaging the bass switch adds an extra punch to the low frequencies, making your songs and movies more impactful and immersive. This feature is ideal for users who prefer a richer, more pronounced bass response, or for specific genres of music and movie soundtracks that benefit from enhanced low-end presence. The ability to adjust bass levels provides a personalized listening experience, allowing you to tailor the sound to your taste.
The N2 is equipped with a 3.5mm headphone input for connecting to your audio source and a 3.5mm headphone output for connecting your headphones. This standard stereo interface ensures broad compatibility with most audio devices and headphones available on the market. The volume control is managed by a high-precision volume knob, which allows for smooth and accurate adjustment of the listening level. This tactile control offers a more satisfying and precise way to set your desired volume compared to digital volume controls found on many source devices.
Powering the N2 is an internal rechargeable battery, which provides portability and allows for use on the go without being tethered to a power outlet. The device is charged via a Type-C charging port, a modern and convenient standard for many electronic devices. A charging indicator light provides visual feedback on the charging status, letting you know when the device is actively charging.
Using the Fosi Audio N2 is straightforward and designed for ease of use. To begin, you connect your audio source device, such as a mobile phone or PC, to the N2's 3.5mm audio input using a 3.5mm to 3.5mm cable. Once the source is connected, you turn on the N2 by rotating the Power Switch knob slightly to the right. This knob also doubles as the volume control. A blue power indicator light will illuminate, signifying that the device is powered on and has sufficient battery. If the battery is low, this indicator light will turn red, serving as a warning to recharge the device.
After powering on the N2, you connect your headset or headphones to the N2's 3.5mm headphone jack. With both the source and headphones connected, you can then adjust the volume using the high-precision volume knob to your desired listening level. The gain switch and bass switch can be toggled to customize the sound further, depending on your headphones and audio preferences. If the sound is not loud enough, even with the volume knob turned up, you can flip the gain switch to the high setting to provide more amplification.
The N2's portable design, with its all-aluminum silver body, makes it an excellent companion for on-the-go listening. Its compact size allows it to fit easily into a pocket, making it convenient for travel, commutes, or simply moving around the house. The robust construction, carefully CNC processed, ensures durability and a premium feel.
While the N2 is designed for portability, it's important to note a recommendation regarding its usage: it is not recommended to use the device while it is charging. This is because current disturbances that can occur during the charging process may lead to audible noise in the audio output, potentially diminishing the listening experience. To ensure the best sound quality, it's advisable to charge the N2 fully before use. The internal 2200mAH battery provides approximately 12 hours of playtime on a full charge, offering ample listening time for most users.
If you encounter any issues such as no audio output, it's recommended to check a few things. First, ensure the power indicator light is on. If it is, then check that the volume knob is not in its minimum (smallest) state. If it is, rotate it clockwise to increase the volume. If you experience noise when playing music, trying different 3.5mm audio cables, headphones, or music sources can help diagnose the problem. Additionally, keeping the N2 away from other electronic devices can help minimize interference, and trying different playback software or song detection methods might also resolve noise issues.
The Fosi Audio N2 is designed with durability in mind, featuring an all-aluminum body that is both sturdy and aesthetically pleasing. While specific maintenance instructions are not detailed, general care for electronic devices applies. Keeping the device clean and free from dust and debris will help maintain its performance and longevity. Wiping the exterior with a soft, dry cloth can keep it looking new.
Protecting the device from physical shocks, extreme temperatures, and moisture is crucial for its long-term health. Avoid dropping the N2 or exposing it to liquids, as these can damage internal components. When not in use, storing the device in a protective pouch or case can prevent scratches and minor impacts.
The internal rechargeable battery is a key component, and proper charging practices will help extend its lifespan. As mentioned, it's best to avoid using the device while it's charging to prevent potential noise and possibly reduce strain on the battery. Charging the device when the low battery indicator turns red, rather than letting it fully deplete repeatedly, can also contribute to better battery health over time. Using the provided Type-C power cable or a high-quality alternative ensures safe and efficient charging.
The 3.5mm audio jacks and the Type-C charging port should be handled with care. Avoid inserting connectors forcefully or at an angle, as this can damage the ports. Keeping these ports free of dust and lint can prevent connection issues. If a port appears obstructed, a gentle puff of air or a soft, non-conductive tool can be used to clear it, but care should be taken not to damage the internal contacts.
Fosi Audio provides an 18-month limited warranty on parts and labor from the date of purchase for all its products, including the N2. This warranty covers manufacturing defects and provides peace of mind. If any problems arise with the device, contacting Fosi Audio's customer support is the recommended course of action. This ensures that any necessary repairs or replacements are handled by professionals, maintaining the integrity of the device and adhering to warranty terms. Regular firmware updates, if available, would also be a maintenance consideration, though not explicitly mentioned for this specific model. However, keeping an eye on the manufacturer's website for any such updates is generally good practice for electronic devices.
General| Chipset | TPA3116D2 |
|---|---|
| Power Supply | DC 12V-24V |
| SNR | ≥ 98dB |
| Input Mode | RCA |
| Frequency Range | 20Hz - 20kHz |
| Speaker Impedance | 4-8Ω |
| Output Mode | Speaker |
| Power Supply (Recommended) | 24V/4A |
| Power Output | 50W x 2 (4Ω) |
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