USB-C Vs. 3.5mm – Which Port Provides Superior Audio Quality?
Take a stroll, and you’ll likely notice many individuals sporting wireless headphones, particularly AirPods and Marshall’s Major V. Even though smartphones have largely eliminated wired earbuds, there’s a resurging trend indicating that wired headphones are returning. However, when you opt for wired headphones, you must decide between a classic 3.5mm headphone jack or the newer USB-C port, which leads to the question: which one is better? Nearly every audiophile will tell you that the answer lies in a digital connection accompanied by a high-quality external Digital-to-Analogue converter (DAC), commonly via a USB-C adapter or device where you attach your usual 3.5mm headphones.
Nonetheless, the answer revolves more around the DAC than the port. A 3.5mm jack depends solely on the internal audio hardware of the device, including its DAC and amplifier, while USB-C generally transmits the audio as a digital signal without converting it, assigning that responsibility to an external DAC, whether that’s in a dongle (adapter) or integrated into the headphones. This implies that USB-C can provide superior audio configurations, offering clearer sound, increased power, and reduced distortion, but this is contingent upon the quality of the external hardware.
For the majority of users utilizing standard headphones or included adapters, the difference is minimal enough that overthinking it isn’t necessary. Nevertheless, comprehending the distinctions between analog and digital audio can assist you in determining what is preferable based on your setup and your preferences.
Analog vs. digital audio: the fundamental difference is in audio transmission
The 3.5mm headphone jack outputs analog audio, meaning your device has already transformed the digital music file into a signal that your headphones can replicate. In this case, the audio quality hinges entirely on the device’s built-in DAC and amplifier, designed for everyday use rather than high-fidelity audio performance.
With USB-C, the signal remains digital for an extended period. Instead of converting the audio within the phone, the outcome relies on what you connect to it, whether a dongle, USB-C headphones, or a dedicated external DAC. That being said, using USB-C configurations can achieve higher audio quality, as external DACs do not face the same constraints of size, power, or cost as a smartphone’s internal components or other devices. However, this also implies that achieving better sound might come at a higher cost, as additional components are involved in the process.
Ultimately, with a 3.5mm jack, the sound quality is determined by the phone, while with USB-C, the outcome is contingent upon the quality of the external hardware, whether it’s the adapter, the DAC, or the headphones. In simpler terms, analog audio is consistent, while USB-C offers greater flexibility for an enhanced experience.
Here’s how audio setups leverage analog and digital outputs
Smartphone manufacturers generally eliminated the 3.5mm headphone jack to conserve space, enhance water resistance, and promote wireless audio. Consequently, modern smartphones have transitioned audio into a modular system, as the file conversion occurs in whatever device it’s connected to. Observing professional audio equipment clarifies this point.
For instance, audiophiles utilize specialized DAC/amp units like the Chord Mojo 2 for exceptional audio quality. These high-end setups typically favor USB-C connections because separating the DAC from the source permits better components, more power, and finer control over sound quality. In contrast, a 3.5mm jack operates as a closed system and remains restricted by the device’s internal hardware, whether it be a laptop, tablet, or speaker.
In summary, USB-C won’t magically enhance your music’s sound quality. It’s also dependent on the source, be it a music streaming service, a proper uncompressed file, and the equipment you are using. This is why, for most users, the distinction between 3.5mm and USB-C doesn’t carry much significance, as many aren’t eager to invest considerable money. Still, if you seek to elevate your listening experience, a digital connection with a quality external DAC is the optimal solution.