1. Introducció
Thank you for choosing the BOYA BY-AM4 Dual-Channel Audio Interface. This professional-grade audio interface is designed to provide high-quality audio input and output for a variety of applications, including recording, live streaming, podcasting, and music production. Its versatile connectivity and intuitive controls make it an essential tool for creators seeking superior sound performance.
Please read this manual thoroughly before using the BY-AM4 to ensure proper operation and to maximize its potential.
2. Producte acabatview
The BOYA BY-AM4 features a robust design with essential controls and ports for seamless audio integration.
2.1. Contingut del paquet
- BOYA BY-AM4 Audio Interface
- Cable USB
- Manual d'usuari
- (Additional accessories may vary by region)
2.2. Disseny del dispositiu

Figura 2.2.1: Frontal view of the BOYA BY-AM4, showing input gain controls, MIDI, 48V, Denoise, Loopback, Direct monitoring buttons, and master monitor volume.

Figura 2.2.2: posterior view of the BOYA BY-AM4, displaying DC 5V power input, Phone output, USB port, MIDI IN/OUT, and Line Outputs (R/L).

Figura 2.2.3: lateral view of the BOYA BY-AM4, showing Input 1 and Input 2 combination XLR/TRS jacks.
2.3. Controls i indicadors
- Botons de GUANY 1/2: Adjusts the input gain for Input 1 and Input 2.
- LINE/INST Switches: Toggles between Line level and Instrument level input for each channel.
- MIDI Button: Activates/deactivates MIDI functionality.
- Botó 48V: Engages +48V phantom power for condenser microphones on both inputs.
- DENOISE Button: Activates noise reduction feature.
- Botó LOOPBACK: Enables loopback function for recording computer audio output.
- Botó DIRECT: Toggles direct monitoring, allowing you to hear your input signal without latency.
- Botó MONITOR: Controls the overall output volume for headphones and line outputs.
- HEADPHONE Output: 6.35mm (1/4") stereo jack for connecting headphones.
- Entrada DC 5V: Port d'entrada d'alimentació.
- PHONE Output: 3.5mm (1/8") stereo jack for connecting headphones or external devices.
- Port USB: Connects the interface to a computer or mobile device.
- ENTRADA/SORTIDA MIDI: 5-pin DIN connectors for MIDI devices.
- LINE OUTPUTS (R/L): Balanced TRS outputs for connecting to studio monitors or ampaixecadors.
- ENTRADA 1/2: Combination XLR/TRS jacks for connecting microphones or instruments.
3. Configuració
Follow these steps to set up your BOYA BY-AM4 audio interface:
- Connexió d'alimentació: Connect the provided DC 5V power adapter to the "DC 5V" input on the rear panel of the BY-AM4. Plug the adapter into a power outlet.
- Connexió USB: Connect the BY-AM4 to your computer (Windows, macOS, Linux) or mobile device (iOS, Android) using the supplied USB cable. The device should be recognized automatically, and necessary drivers will typically install themselves.
- Dispositius d'entrada:
- For microphones (XLR): Connect your microphone to INPUT 1 or INPUT 2. If using a condenser microphone, press the 48 V botó per subministrar alimentació phantom.
- For instruments (TRS): Connect your instrument (e.g., guitar, bass) to INPUT 1 or INPUT 2 using a 1/4" TRS cable. Ensure the corresponding LÍNIA / INST switch is set to "INST".
- For line-level devices (TRS): Connect line-level sources (e.g., keyboards, mixers) to INPUT 1 or INPUT 2 using a 1/4" TRS cable. Ensure the corresponding LÍNIA / INST switch is set to "LINE".
- Dispositius de sortida:
- Auriculars: Connect your headphones to the 6.35mm (1/4") HEADPHONE output or the 3.5mm (1/8") PHONE output.
- Monitors/altaveus d'estudi: Connect your studio monitors or powered speakers to the LINE OUTPUTS (R/L) using balanced TRS cables.
- Configuració del programari: Open your Digital Audio Workstation (DAW) or recording software. Go to the audio settings/preferences and select "BOYA BY-AM4" as your audio input and output device.
4. Instruccions de funcionament
Understanding the controls of your BY-AM4 will help you achieve optimal audio quality.
4.1. Input Gain Adjustment
Utilitza el GUANYA 1 i GUANYA 2 knobs to adjust the input level for each connected microphone or instrument. Aim for a strong signal without clipping (distortion). Most DAWs will have input meters to help you monitor levels.
4.2. Phantom Power (48V)
Premeu el botó 48 V button to supply +48V phantom power to condenser microphones. Ensure your microphone requires phantom power before activating this feature. Dynamic microphones do not require phantom power.
4.3. Denoise Function
Activa el REDUEIX EL SOROLL button to engage the built-in noise reduction. This can help reduce background hiss or hum, especially in noisy environments. Experiment with this feature to find the optimal setting for your recording.
4.4. Direct Monitoring
Premeu el botó DIRECTE button to enable direct monitoring. This allows you to hear your input signal directly through the interface's outputs (headphones, line outputs) with zero latency, bypassing your computer's processing. This is crucial for real-time performance and recording.
4.5. Funció de bucle
El LOOPBACK function allows you to record audio playing on your computer (e.g., from YouTube, Spotify, or a video game) simultaneously with your microphone or instrument input. This is particularly useful for live streaming, podcasting, or creating content that combines multiple audio sources.
4.6. MIDI Connectivity
The BY-AM4 includes MIDI IN/OUT ports. Connect your MIDI keyboard, controller, or other MIDI devices to these ports. Press the MIDI button to ensure MIDI functionality is active. Your DAW will recognize the BY-AM4 as a MIDI interface, allowing you to send and receive MIDI data.
4.7. Control de volum de sortida
Ajusteu el MONITOR knob to control the overall output volume for your headphones and line outputs. Always start with a low volume and gradually increase it to a comfortable listening level.
5. Manteniment
Proper care will extend the life of your BOYA BY-AM4:
- Keep the device clean by wiping it with a soft, dry cloth. Do not use liquid cleaners or solvents.
- Eviteu exposar el dispositiu a temperatures extremes, humitat o llum solar directa.
- No deixeu caure ni sotmeti el dispositiu a impactes forts.
- Guardeu el dispositiu en un lloc fresc i sec quan no l'utilitzeu.
- Ensure all cables are connected securely but do not force them.
6. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| No sound from inputs. |
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| No sound from outputs (headphones/speakers). |
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| Latency during monitoring. |
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| Dispositiu no reconegut per l'ordinador. |
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7. Especificacions
| Marca | BOYA |
| Número de model | BY-AM4 |
| Dimensions del producte | 11 x 16.5 x 4.5 cm |
| Pes de l'article | 10 g |
| Dispositius compatibles | Laptop, Microphone, Personal Computer, Tablet, Amplifier, Headphone, Smartphone, Speaker |
| Sistema operatiu | Linux, Windows, iOS, macOS, Android |
| Tecnologia de connectivitat | USB, XLR |
| Nombre de canals | 2 |
8. Garantia i Suport
BOYA products are designed for reliability and performance. For information regarding warranty coverage, technical support, or service, please refer to the warranty card included with your product or visit the official BOYA weblloc web. Conserveu el rebut de compra com a comprovant de compra per a reclamacions de garantia.
For further assistance, you may contact BOYA customer support through their official channels.
9. Vídeos oficials de productes
Currently, there are no official product videos available from the seller for the BOYA BY-AM4 audio interface. Please check the manufacturer's website or official channels for future updates and video tutorials.





