Get the Focusrite Scarlett 18i20 3rd Gen. The Focusrite Scarlett 18i20 3rd Gen wins Audio Resolution, Mic Inputs and Monitoring. It is the pricier of the...
The Ruling
The Focusrite Scarlett 18i20 3rd Gen wins Audio Resolution, Mic Inputs and Monitoring. It is the pricier of the two at $599.99, so the Audio-Technica AT-UMX3 Desktop Mixer stays the pick if $440.99 matters more than those specs.
Unless…
At a Glance
Every axis is scored out of 10 from the catalog specs below. The scores are relative to the products on this page, so a 10 means “best of these”, not “perfect”, and two identical columns mean the catalog genuinely cannot separate them. Axes the catalog holds no figure for on both sides are left off entirely rather than guessed at.
| Category | Audio-Technica AT-UMX3 Desktop Mixer | Focusrite Scarlett 18i20 3rd Gen |
|---|---|---|
| Audio Resolution | 7.5/10 | 10/10 |
| Mic Inputs | 5/10 | 10/10 |
| Monitoring | 7.5/10 | 10/10 |
| Creator Features | 5/10 | 5/10 |
| Power | 10/10 | 0/10 |
| Value | 10/10 | 2.7/10 |
The Split
Compact desktop streaming mixer/interface with tactile controls for mic and monitor balancing.
On paper the Audio-Technica AT-UMX3 Desktop Mixer takes loopback (Yes) and bus powered (Yes). It gives up ADAT expansion and sample rate to the Focusrite Scarlett 18i20 3rd Gen. It is the cheaper of the two, by $440.99.
Leads on
Loopback routes computer audio back into the stream without a second interface or cable.
Bus power means the interface runs off USB alone — no wall adapter to carry or find a socket for.
Desktop audio interface intended for creator workflows, microphone input, monitoring, and clean signal routing.
On paper the Focusrite Scarlett 18i20 3rd Gen takes ADAT expansion (Yes), sample rate (192kHz, +144kHz), XLR inputs (2, +1) and headphone outputs (2, +1). It gives up loopback and bus powered to the Audio-Technica AT-UMX3 Desktop Mixer. That costs $440.99 more than the Audio-Technica AT-UMX3 Desktop Mixer.
Leads on
ADAT lets you add eight more inputs later instead of replacing the interface.
Higher sample rates capture more audio detail — important for professional recording and mixing.
More XLR inputs let you record multiple microphones simultaneously.
A second headphone output lets a guest monitor without a splitter.
These 5 specs are the same on both of them, so none of it is part of the decision.
The Record
A group is won by whoever takes more of its rows outright. Specs the catalog cannot rank are shown but never decide a group.
Bottom Line
The Focusrite Scarlett 18i20 3rd Gen is the pick on the specs the catalog holds, but “better on paper” and “right for you” are different questions. Each case below names what the product is actually good at and who that suits.
The clearest difference is loopback, which the Audio-Technica AT-UMX3 Desktop Mixer has and the Focusrite Scarlett 18i20 3rd Gen does not. Across the catalog's specification sheet the two differ on 6 specs. They match on 5 specs, including connection type, bit depth and max sample rate. Two audio interfaces from Audio-Technica and Focusrite, each taking a different approach to audio quality and I/O flexibility.
Get the Focusrite Scarlett 18i20 3rd Gen. The Focusrite Scarlett 18i20 3rd Gen wins Audio Resolution, Mic Inputs and Monitoring. It is the pricier of the two at $599.99, so the Audio-Technica AT-UMX3 Desktop Mixer stays the pick if $440.99 matters more than those specs.
Both share 5 specifications in the catalog, including connection type (usb-c, xlr, trs), bit depth (24-bit), max sample rate (192kHz) and phantom power (Yes), among others. None of those is a reason to pick one over the other.
The Focusrite Scarlett 18i20 3rd Gen costs $599.99 against $159.00, a difference of $441. The premium buys ADAT expansion (Yes), sample rate (192kHz) and XLR inputs (2). Whether that is worth it depends on which of those you would actually use.