• The best podcast audio interface for podcasts with 4 people is Tascam Mixcast 4
• The best audio interface for solo podcasters is Focusrite Vocaster One
• Value for money option: Behringer Xenyx X1204 USB
• Audio interface for podcasts with two people: Focusrite Scarlett 8i6 3rd Gen USB

What is this list, and who is it for?

This list is for podcasters interested in buying an audio interface and highlights our top recommendations. You will also learn everything you need to know about audio interfaces, enabling you to make an informed decision.

What is an audio interface?

Before moving forward with the list, it's helpful to understand what an audio interface is and how it can assist podcasters in recording high-quality audio. An audio interface is a device that converts an analogue signal coming from an external source (microphone) to digital signals that the computer can understand and process.  XLR microphones can not be plugged directly into a computer, and an audio interface solves this problem.

Before the arrival of USB microphones, audio interfaces were a must for anyone trying to record audio on a computer; however, an audio interface is still the best way to record audio since it provides the best SNR (Signal To Noise Ratio), and it’s also very versatile.

How is an audio interface different from a USB microphone?

A USB microphone can be connected directly to a computer using a USB cable. This type of microphone is a relatively recent invention, developed in response to the increasing mainstream adoption of audio recording. We can think of a USB microphone as a combination of an XLR microphone and an audio interface, all in one enclosure. 

Audio interfaces do not produce sounds on their own, and a source (microphone) is needed. The biggest advantage of an audio interface is the possibility of recording multiple sources (microphones) at the same time, and higher quality preamps, which produce better audio.

What do you need to know before you buy a podcast audio interface?

Audio interfaces come in different shapes and sizes, and not all are suitable for podcasters. Audio interfaces are heavily used in music production, and most are designed with that case in mind, certain features being overkill for podcasters. 

In essence, you need to understand the following main features of an audio interface to make an informed buying decision. 

Number of input channels

The more input channels an interface has, the more sources you can connect to it. For example, if you want to record a podcast with four people using four microphones, you will need an interface with the same number of input channels.

You also need to consider the type of input channels as well. For podcasters, it is recommended that you buy an audio interface with XLR inputs instead of Line (Jack) inputs. Typically, the more inputs an audio interface has, the higher the price.

Number of output channels

Outputs are used for connecting multiple output devices, such as speakers, headphones or other devices that accept audio.

Standard interfaces come with at least two outputs used for connecting two speakers (left and right channels) and one headphone output for connecting a pair of headphones. Regular outputs, the ones usually present on the back of an audio interface, can output only mono signals, while headphone outputs can transmit stereo signals.

The more output channels an interface has, the higher the price.

Monitoring

As mentioned above, most audio interfaces come with at least one headphone output. However, if you plan to record with guests, you'll likely need one headphone output per person. In this article, we've highlighted a few podcast audio interfaces that include up to four headphone outputs. If your interface doesn’t have enough headphone outputs, you can connect it to a multi-channel headphone amplifier to distribute the signal to multiple listeners. The Behringer HA8000 is a cheap headphone amplifier that will do the job.

Here is how it is done:

Phantom power

Condenser microphones need a feature called “phantom power”. Since condenser microphones require more power to operate, “phantom power” is an additional 48V power source that can be enabled on a specific input channel. 

Most audio interfaces have a 48V power button on all input channels.

Connection Type

Audio interfaces can be connected to a computer through different connection types. 

USB Audio Interface

The most common connection method is via a USB cable, which is the one we recommend for podcasters. For this to work, you need to purchase the proper USB cable for your application. 

Most audio interfaces have a USB-B port, and more recent models have a USB-C port or both. Computers have either a USB-A port or a USB-C port. 

All you need to do is ensure you have the correct cable to connect your interface to your computer.

Possible combinations are: 

 Thunderbolt Audio Interface

More expensive audio interfaces may include a Thunderbolt connection. This connection allows for lower audio latency. This is primarily useful for more advanced applications where high latency can negatively impact a musician's performance. In most cases, Thunderbolt audio interfaces are specifically designed to work with MAC computers only. 

There is a very limited range of Thunderbolt interfaces that work with Windows computers.

Older versions of Thunderbolt include Thunderbolt 1 and Thunderbolt 2.  These have a unique connector shape, which is available only on older Mac computers. Newer interface models feature Thunderbolt 3, which resembles a USB-C connection; however, their operation is very different, and they aren’t cross-compatible. 

Thunderbolt 3 ports are usually marked with a lightning bolt icon near the connector.

Because Thunderbolt audio interfaces are a little complicated and serve a particular purpose, we would not recommend them to podcasters.

Firewire Audio Interface

FireWire audio interfaces are the predecessors of Thunderbolt ones. It is improbable that you will stumble across one in a shop; they are now a thing of the past; however, some are still sold second-hand. Although FireWire can run on Windows PCs, implementing it is a challenging task. 

We don’t recommend a FireWire audio interface for podcasting use.

Compatibility with Windows or Mac

Most USB interfaces are compatible with any Windows or Mac computer. There is a very limited range of USB audio interfaces that do not work with Mac computers.

1: Focusrite Scarlett 8i6 3rd Gen USB

The Focusrite Scarlett 8i6 3rd Gen is known for creating one of the best audio interfaces on the market. This particular one is an excellent choice for podcasters due to its affordable price and the number of inputs and outputs packed in such a small unit. Additionally, this interface features an “air mode” that boosts your microphone preamps into the high-end frequency spectrum, making your voice sound more soothing. 

Ideal for recording two people simultaneously. 

Price: $237

2: Tascam Mixcast 4

The Tascam Mixcast 4 is a podcast recording device first (meaning you can record directly on an SD Card). Additionally, it can serve as a powerful podcast audio interface, making it an ideal choice for podcast audio units. It packs a tonne of connectivity, including a minijack and Bluetooth input for recording phone conversations. The pads on the interface are a fun feature as well; however, they aren’t essential.

The number of connections and features for such a great price makes the Tascam Mixcast 4 one of the best podcast audio interfaces out there.

Ideal for recording four people simultaneously. 

Price: $500

3: Steinberg UR44C

The Steinberg UR44C is a lesser-known audio interface; however, it is a perfect fit for podcasters. Steinberg is primarily a software company that develops Cubase, one of the world's best digital audio workstations (DAWs). By purchasing this audio interface, you’ll also receive a complimentary copy of Cubase AI.

Another feature that you may not expect from an interface priced so well is the onboard DSP Effects, which give you the capability to process the audio before it’s recorded.

We chose the Steinberg UR44C for this list of best podcast audio interfaces because it offers numerous inputs and outputs at an extremely affordable price. 

Ideal for recording four people simultaneously. 

Price: $425

4: Behringer Xenyx X1204 USB

Behringer is a well-known brand recognised for its budget-friendly gear, but affordable doesn’t have to mean low quality. The Behringer Xenyx X1204 USB stands out on this list as a versatile audio mixer that also functions effectively as a podcast audio interface.

This unit has onboard EQ and a one-knob compression on all 4 microphone inputs. When you buy the Behringer Xenyx X1204 USB and register your product with Behringer, you get the Traktion DAW for free. 

One disadvantage is the unit's bulkiness, given its numerous features.

This entry is the best value for money.

Ideal for recording four people simultaneously. 

Price: $180

5: Universal Audio Volt 476P USB

Next on our list is the Universal Audio Volt 476P USB Recording Studio, a high quality audio interface from a brand recognised as the industry standard in audio production. This compact audio interface offers a range of features useful for podcasters. 

One standout feature is the built-in 76-style compressor, inspired by the legendary UA 1176. 

As a podcaster, this helps you maintain consistent audio levels for a smoother, more professional sound. Additionally, the interface includes a vintage-style preamp designed to emulate the warm, rich tones of classic studio consoles. While not essential, it adds a pleasing warmth to your voice that your listeners will appreciate.

Ideal for recording four people simultaneously. 

Price: $500

6: Focusrite Vocaster One

The Focusrite Vocaster One is an excellent choice for solo podcasters, as it features only one microphone input, 2 line outputs and one headphone output. The unit is designed to be as portable as possible and straightforward to use. It features two buttons which can control the input gain and playback. One standout feature is the dedicated audio output for video, located on the back of the unit, making it an excellent choice for podcasters who need clean, synchronised audio. It also includes a dedicated 3.5mm mini-jack input for easily integrating phone calls into your recordings.

Focusrite has also released the Focusrite Vocaster Two, which is the same device except that it features two microphone input channels and two headphone output channels instead of one. The Focusrite Vodcaster Two also has Bluetooth functionality not found on the Focusrite Vocaster One.

Ideal for recording one person.

Price: $55

7: Rode Rodecaster Pro II

The Rodecaster Pro II is one of the most popular podcast audio interfaces on the market, purpose-built with podcast producers in mind. It’s also the most premium and most expensive option on this list. The unit has many features specifically designed for podcasters and streamers.

This podcast audio interface allows direct recording to an SD card and includes built-in DSP effects for professional-grade audio processing. It also supports Bluetooth connectivity, making it easy to record phone call conversations. Additionally, it features customizable pads for triggering sound effects and jingles, adding extra production value to your podcast recordings.

This podcast audio interface is all you’ll need for any type of podcast setting.

Ideal for recording four people simultaneously. 

Price: $700

8: Shure Motiv MVX2U

The Shure Motiv MVX2U is a compact audio interface designed specifically for podcasters and streamers who want to convert an XLR microphone into a USB microphone. Its sole purpose is to transform analog audio into a high-quality digital signal.

Ideal for solo podcasters, this plug-and-play device is lightweight, portable, and perfect for recording on the go.

This audio interface can be controlled with the ShurePlus Motiv Desktop app. 

Ideal for recording one person.

Price: $150

9: Zoom LiveTrak L-8

The Zoom LiveTrak L-8 is a powerful all-in-one podcast recording device and audio interface, packed into a compact and affordable unit. You can record your podcast directly to an SD card or connect it to your computer to use it as a podcast audio interface, making it a versatile tool for both studio and remote podcasting.

This interface features six high-quality microphone inputs with 48V phantom power and two line inputs. Additionally, it features four dedicated headphone outputs, making it an ideal interface for larger podcasts.

Ideal for recording up to six people simultaneously. 

Price: $485

Guide To Audio Interfaces

Preamps

Audio preamps (preamplifiers) on an audio interface are circuits that boost low-level signals, like those from microphones or instruments, up to a usable level for recording and processing. The quality of these preamps plays a crucial role in the overall sound, so it's essential to select an audio interface equipped with high-quality preamps for clean, clear, and professional audio.

Analog Inputs

Analog inputs are connectors that accept analog audio signals, such as those from microphones, instruments, or mixers. Common analog input types include XLR connectors and 1/4-inch or 1/8-inch jacks, though the specific function of a jack can vary depending on the device.

Analog Outputs

Analog outputs are connectors that send analog audio signals to other devices, such as speakers, headphones, mixers, or recorders. These outputs transmit continuous electrical signals and are commonly used in both consumer and professional audio setups.

Common types of analog outputs include 1/4-inch jacks (TS or TRS) for mono or stereo line-level signals, XLR connectors often used for balanced line-level outputs in professional audio equipment, 3.5mm (1/8-inch) jacks found in many consumer devices for headphones or line-out connections, and RCA connectors, which are frequently used in home audio systems.

Headphone Outputs

Headphone outputs are specialized analog outputs designed to drive headphones. They output stereo audio and are typically built with a lower output impedance and higher current capability than standard line-level analog outputs, allowing them to power headphones efficiently and with good sound quality.

Midi Ports

Some audio interfaces include MIDI ports specialized connectors used to send and receive MIDI (Musical Instrument Digital Interface) signals. These signals control electronic instruments, virtual instruments, and software by transmitting data such as notes, timing, and automation, rather than actual audio. While useful for musicians and producers, MIDI ports are generally not needed for podcasters unless they use MIDI gear for music, sound effects, or live triggering. They aren’t a common feature on podcast audio interfaces.

World Clock

Word clock is a synchronisation signal used in digital audio systems to ensure that multiple devices stay in perfect timing with each other. It’s not usually found on podcast audio interfaces.

DSP

DSP stands for Digital Signal Processor, a specialized chip inside some audio interfaces that allows real-time processing of audio. This includes functions like EQ, compression, reverb, noise gating, and routing, often controlled through a software interface. DSP enables these effects to run without putting a load on your computer, making it especially useful for low-latency monitoring and live performance setups. It is a nice feature to have for podcasters but not essential.

Sample Rate & Bit Depth

Sample rate and bit depth are two essential elements of digital audio. 

Sample rate refers to how many samples a full audio cycle contains within one second, expressed in kilohertz (kHz). Common sample rates include 44.1 kHz, 48 kHz, and 96 kHz, with higher rates capturing more detail and high-frequency content. 

Bit depth, on the other hand, determines the quantisation of those samples, affecting the dynamic range and the accuracy of audio. Common bit depths are 16-bit, 24-bit, and 32-bit float, with higher bit depths offering more headroom and lower noise. For example, 16-bit/44.1 kHz is standard for CDs and suitable for podcasts, while 24-bit/48 kHz is commonly used in music production, or video production. 

Most audio interfaces on the market will support at least a 44.1 kHz sample rate and 16-bit.

Signal-to-Noise Ratio

Signal-to-Noise Ratio (SNR) is a measurement that compares the level of the audio signal you want (like a voice or instrument) to the level of unwanted background noise in a recording or audio system.

It’s usually expressed in decibels (dB), and higher numbers are better.

Audio Latency

Audio latency is the amount of time the audio takes to make a full circle through your audio equipment. It can be perceived by podcasters as a short delay between when you speak into your microphone and when you hear your voice back through your headphones. For podcasters, this can be distracting, especially during interviews or live recordings because it can throw off your timing. The delay happens as your voice travels through your mic, into your audio interface or computer, gets processed, and then plays back in your ears. A good audio interface with low latency or a direct monitoring feature can help you avoid this and keep your recordings smooth and natural.

Connecting an Audio Interface

FAQ

Q1: Can a USB microphone be plugged into an audio interface? 

No, an USB microphone can not be plugged into an audio interface.

Q2: What is the difference between an audio interface and a podcast audio interface?

Technically any audio interface can act as a podcast audio interface; however, certain manufacturers have developed audio interfaces geared directly to podcasters. Certain podcast audio interfaces have extra features, such as signal routing flow specifically designed for podcasters, Bluetooth connectivity, pads for sound triggering, internal recording on an SD card, multiple headphone outputs.

Q3: Do I need an audio interface?

If you are a solo podcaster, you may be able to get away with only a USB microphone. If you interview guests in a physical location, you most likely will benefit from an audio interface.

Q4: What type of connection should I choose for my audio interface?

For podcasters, we recommend using a USB audio interface, as it’s widely compatible with most computers and operating systems.