Do I Need an External Sound Card for My Microphone?
Introduction
If you record podcasts, stream, or work with voice, you've probably heard the advice: "Buy an external sound card — the sound will be better." But is it really true? In this article, we'll figure out when a sound card is actually needed and when you can get by with the built-in one.
1. What is a Sound Card and Why is it Needed
A sound card is a device that converts the analog signal from a microphone into digital (and vice versa). Its quality determines sound clarity, noise level, and the ability to connect professional microphones.
- Built-in card — part of the laptop or PC motherboard. Suitable for household use.
- External card (audio interface) — a separate device providing improved sound quality and flexible settings.
2. When You Can Do Without an External Card
- If you use a USB microphone (for example, Fifine, Maono, Blue Yeti) — it already has a built-in audio interface.
- If you're simply communicating in Zoom, Skype, Discord, or Teams.
- If the background noise level suits you and the sound is clean enough.
Conclusion: the laptop's built-in card is quite sufficient for video calls and online learning.
3. When You Really Need a Sound Card
- If you use an XLR microphone (for example, Rode NT1-A, Audio-Technica AT2020).
- If you record vocals, podcasts, or professional streams.
- If you want to control signal level, gain, and noise suppression.
Advantages:
- Cleaner and richer sound.
- Less background noise and distortion.
- Ability to adjust microphone and headphone volume separately.
4. Popular Audio Interface Models
| Model | Connection Type | Features | Price |
|---|---|---|---|
| Focusrite Scarlett Solo (3rd Gen) | USB-C | Ideal for one microphone | ≈ $150 |
| Behringer UMC22 | USB | Affordable starter option | ≈ $80 |
| Audient EVO 4 | USB-C | Auto gain adjustment | ≈ $140 |
| Yamaha AG03MK2 | USB | Streaming features, mixer | ≈ $200 |
5. USB Microphone or Sound Card with XLR — Which to Choose?
| Parameter | USB Microphone | XLR + Sound Card |
|---|---|---|
| Price | Lower | Higher (microphone + card) |
| Sound Quality | Good | Excellent |
| Setting Flexibility | Limited | Maximum |
| Connection | Simple | Through interface |
6. What to Pay Attention to When Choosing a Sound Card
- Number of inputs (for one or multiple microphones).
- Connection type (USB / USB-C / Thunderbolt).
- Support for 48V phantom power for condenser microphones.
- Size and ergonomics — a compact model is suitable for a home desk.
Conclusion
Summary: if you have a USB microphone — an external card is not needed. If you want to improve recording quality and switch to XLR equipment — a sound card will become your main tool. For most users, affordable solutions like Behringer UMC22 or Audient EVO 4 are sufficient.
Before purchasing, test your microphone on DoCam.io.