Cheap audio interfaces are worth it when the alternative is not recording, and when you pair one with a hot microphone. What you lose under $100 is gain headroom and, on most of them, 16-bit conversion — not sound quality in the way reviews imply. Pair a 54 dB interface with a -59.0 dBV/Pa dynamic and it will hiss; pair it with a condenser and the recording is genuinely fine.
The honest version of this question is not whether cheap interfaces are bad. It is which specific compromise you are accepting, because the answer changes what you should buy to go with it.
What you actually lose, in order of how much it matters
- Gain headroom. This is the big one and it is the only one that can ruin a recording outright. Budget interfaces top out around 54 dB. A broadcast dynamic wants 60 dB or more. Over the line, you get hiss you cannot remove.
- A published gain figure at all. Both Behringer boxes below publish no maximum mic gain, which means you cannot plan a microphone purchase against them. That is a worse problem than a low number.
- Bit depth. Three of the four here are 16-bit. That caps your headroom for quiet sources, so you have to track closer to the ceiling than you would like. It is a real limitation and a manageable one.
- Driver quality. Harder to quantify and easy to underestimate. The weakest drivers in this tier cost you sessions, not fidelity.
- Monitoring and routing. One headphone output, no loopback, no per-channel phantom switching. All inconveniences rather than quality limits.
Note what is not on that list: the converters. Every interface sold in the last decade converts well enough that you will not hear its limits in a domestic room — see audio interface vs DAC for why that is. The cheap-converter story is the wrong story.
For contrast, the Scarlett 2i2 publishes 69 dB of gain and 120 dB of dynamic range. That is the gap you are closing when you spend more — and it is a gap in gain and documentation far more than in conversion.
What to buy
The four cheap interfaces, with what each one costs you
Ranked by how usable the result is rather than by price. The M-Audio boxes publish their gain figure, which is why they rank above the Behringers despite the Behringer UMC204HD having the better converter.
M-Audio M-Track Duo
Top pickM-Audio · Two inputs for the price of most single-input boxes
The cheapest way to record two microphones at once, with the large caveat that only one of you can monitor. For a serious two-person setup the headphone count matters more than the price.
Why it is here
- Two combo preamps under $100, which is close to unique
- Same published `54 dB` gain figure as the Solo
- Bus powered, so a second voice costs you nothing in desk space
What it costs you
- One headphone output, so the second person cannot hear themselves
- 16-bit conversion
- `54 dB` rules out the low-output dynamics most podcasters want
Behringer U-Phoria UMC204HD
Behringer · The floor of the category, honestly described
Buy it when the alternative is not recording at all, and plan to replace it. With no published gain figure it is a gamble with any low-output dynamic — pair it with a hot mic or not at all.
Why it is here
- Cheapest two-input interface worth plugging a real mic into
- Two combo inputs and phantom power at a price nothing else matches
- Inserts on the inputs, which is unusual this low
What it costs you
- Behringer does not publish a maximum gain figure, so you cannot plan a gain budget from the spec sheet
- Driver experience is the weakest in this group
- Build reflects the price
M-Audio M-Track Solo
M-Audio · A published gain figure under $100
The most honest sub-$100 interface, because it tells you what it can do. Pair it with a hot microphone and it is a genuinely usable first chain; pair it with a broadcast dynamic and it will disappoint.
Why it is here
- It publishes its gain figure, which almost nothing else under $100 does — `54 dB` is a number you can plan against
- USB bus powered and genuinely pocketable
- Clean, neutral preamp with no attempt at color
What it costs you
- 16-bit conversion, same ceiling as the cheap Behringers
- `54 dB` is not enough for an SM7B-class dynamic
- One microphone input only
Behringer U-Phoria UMC22
Behringer · The cheapest box with phantom power
Buy it only when the alternative is not recording at all, and pair it with a hot microphone. The 16-bit converter is the reason to step up to the UMC204HD or an M-Track as soon as you can.
Why it is here
- About the cheapest way to get an XLR microphone and phantom power into a computer
- A separate instrument input means a microphone and a guitar at once
- Direct monitoring, so you can hear yourself without software latency
What it costs you
- **16-bit / 48 kHz conversion** — the one genuine technical limitation at this price, and it caps your headroom for quiet sources
- Behringer publishes no maximum mic-gain figure, so a low-output dynamic is unplannable
- Build and drivers reflect the price
The pairing rule that makes a cheap interface work
Choose the microphone against the interface, not the other way round. A 54 dB box plus a condenser, an Elgato Wave DX at -52 dBV/Pa, a Shure SM58 or an MV7+ at -55 dBV/Pa is a chain that works. The same box plus an SM7B at -59.0 dBV/Pa is a chain that hisses, and nothing in the DAW fixes it.
That single rule is the difference between a cheap interface being a good decision and a bad one. How much clean gain do you need has the figure for every interface and microphone on this site, and best XLR microphones lists which capsules are hot enough.
Are expensive audio interfaces worth it, then?
For a specific feature, yes. Two headphone outputs for a co-host. MIDI for a hardware synth. Four preamps for a group. 69 dB of gain for a broadcast dynamic. Analog compression on the way in. Each of those is a concrete thing you can check against your own situation.
For "better sound" in the abstract, no — not in an untreated domestic room with a microphone a hand's width from your face. The next real improvement at that point is the room, not the box. Best audio interfaces under $500 is where feature-driven spending starts to make sense.
When a cheap interface is the wrong call
- You already own a low-output dynamic. Then you are buying a gain problem. Spend on gain instead.
- You record two people who both need to hear themselves. One headphone output is a hard limit — see best audio interfaces for multiple mics.
- You need MIDI or loopback. Neither exists at this price, and working around them costs more than the feature.
- You are paid for this work. Driver reliability becomes the specification that matters, and it is the one the budget tier compromises hardest.
