Buy the Scarlett 2i2 unless you specifically want the Volt 2's Vintage Mic Preamp Mode and your microphone is hot enough for 55 dB. The 14 dB gain gap is the single largest specification difference between any two interfaces on this site, and it decides which microphones each box can drive.
14 dB is not a small difference
It is worth putting this in concrete terms. An SM7B wants about 60 dB of clean gain for spoken word. The Scarlett 2i2 supplies 69 dB — nine to spare. The Volt 2 supplies 55 dB — five short, at which point you are running the preamp at its ceiling and hearing its noise floor. Closing that gap means a booster, which changes the price comparison.
With a condenser at -33 dB, or a hot dynamic like the BP40 at -48 dB, 55 dB is ample and the gap becomes irrelevant. So this comparison genuinely turns on your microphone, not on the boxes.
Choose the Volt 2 if
- You want the vintage preamp mode. It is a real analog-style color modeled on the UA 610, not a plug-in you could add later, and on a voice it adds presence in the upper midrange and weight at the bottom.
- Your microphones are condensers or hot dynamics, so 55 dB is plenty.
- You value the UA software bundle, which is worth genuine money if you will use it.
- You prefer the simpler, cleaner front panel — it is the more legible of the two.
Choose the Scarlett 2i2 if
- Your microphone is, or might be, a low-output dynamic. This covers most people upgrading from USB.
- You want the 120 dB dynamic range rather than 112 dB — a real if modest difference.
- You want to keep every microphone option open with one purchase.
- You would rather color the sound in software, where you can change your mind.
Sound character
Both are clean modern preamps in their default state, and in a blind comparison at matched level the difference is small. Where they diverge is the optional voicing. The Volt 2's vintage mode is the more dramatic of the two — audibly warmer and more forward — and it is printed into the recording. Focusrite's Air mode is subtler and also unremovable.
That permanence is worth thinking about. A color you love on one voice may be wrong on the next, and neither mode can be undone in the edit. If you are recording other people, the conservative choice is to record clean and color in the DAW.
What else you need to buy
- Volt 2: a booster if you pair it with a low-output dynamic. Budget for it.
- Scarlett 2i2: nothing.
Both interfaces in detail
Focusrite Scarlett 2i2 (4th Gen)
Top pickFocusrite · The most gain per dollar in a two-input box
The default answer for someone buying an SM7B or PodMic: it supplies enough clean gain that you never need a booster, which makes it the cheaper total purchase even when it is not the cheaper box. Look elsewhere only if you need MIDI or four outputs.
Why it is here
- 69 dB is the most gain of any interface at this price, and enough for an SM7B with headroom to spare
- 120 dB dynamic range means the converters are not the weak link
- Two inputs, so a second person does not mean a second purchase
What it costs you
- Air mode is a fixed voicing, not an EQ you can dial
- Plastic-and-metal build feels less solid than the SSL or Audient competition
- No MIDI, which matters if you also play keys
Universal Audio Volt 2
Universal Audio · A hardware color option on the way in
Buy it if you want character on the way in and your mic is a condenser or a hot dynamic. With a low-output broadcast dynamic, 55 dB means a booster, and that changes the price comparison entirely.
Why it is here
- Vintage mode is a real analog-style color, not a plug-in you could add later
- Two combo inputs and a clean, legible front panel
- The UA software bundle is worth actual money
What it costs you
- 55 dB is the lowest gain ceiling in this group and the least SM7B-friendly
- 112 dB dynamic range trails the Focusrite and MOTU converters
- Vintage mode is a commitment printed into the recording
If neither: the third option
If you want hardware character and enough gain, the SSL 2+ MKII has the Legacy 4K switch and 64 dB, plus two headphone outputs. The full field is in best audio interfaces for a home studio.