Electro-Voice RE320 with an sE DM1 Dynamite on a MOTU M4: 51 dB needed, 60 available — so why add 28 more?
The RE320 is bought as an SM7B alternative and inherits the SM7B's accessory list along with the reputation. At −52 dBV/Pa it is 7 dB louder than an SM7B and does not need the booster it is usually sold with.
Signal Chain Compatibility Matrix
Select gear and parameters for live gain, impedance and SPL calculations.
Input Equipment Setup
PASS: Optimal Signal Chain
Requires minimum +60dB of clean pre-amp gain. Most budget entry interfaces max out at +50dB to +56dB and introduce hiss at max pot. An inline preamp booster (Cloudlifter CL-1 / FetHead) is strongly recommended.
The interface preamp provides sufficient headroom.
$538
$405
-25%Tonal & acoustic characteristics: Flat, wide-range frequency response for clean music and speech. Smooth, warm acoustic character with air-suspension shock isolation.
Technical advisory: With +69dB max gain, the Gen 4 Solo can drive demanding dynamics like the Shure SM7B natively without requiring an external inline booster.
Physical Interconnect Topology
Shure SM7B
Direct Cable Connection (No Intermediate Box)
1x Shielded Balanced XLR Cable (3-Pin XLR Male to XLR Female)
Focusrite Scarlett Solo (Gen 4)
Host: Apple MacBook Pro (M1/M2/M3/M4)
Short answer: you do not need it for level. Whether you want it for noise is a different question, and our catalogue cannot close that one honestly.
The Electro-Voice RE320 is the loudest of the broadcast dynamics in this catalogue at −52 dBV/Pa. At 85 dB SPL that is about −58.8 dBu on the cable, and against the MOTU M4's +10 dBu clip point and a −18 dBFS target the chain needs 51 dB. The M4 publishes 60 dB — in its manual's appendix, incidentally, not on the product page. Nine decibels in hand, with no booster in the path at all.
Add the sE DM1 Dynamite's +28 dB and the picture shifts rather than improves:
| Chain | Source level | Booster | Left for the M4 | Position on the M4's 60 dB | |---|---|---|---|---| | RE320 alone | 85 dB SPL | — | 51 dB | near the top | | RE320 + Dynamite | 85 dB SPL | 28 dB | 23 dB | lower third | | RE320 alone | 100 dB SPL | — | 36 dB | middle | | RE320 + Dynamite | 100 dB SPL | 28 dB | 8 dB | almost at zero |
The requirement was met in every row. What the booster changes is where on the preamp's curve you sit, not whether you get there.
Why that might still matter, and why we will not pretend to settle it. A preamp's self-noise rises as you open it up, so moving from 51 dB to 23 dB puts the M4 in a quieter operating region. Whether the result is a quieter recording depends on whether the Dynamite's own noise contribution is lower than what the M4 adds over those 28 dB. Our catalogue has an EIN figure for the M4 (−129 dBu) and no published noise figure for the DM1 Dynamite at all. So the comparison cannot be closed from published numbers, and any page that tells you confidently which way it goes is guessing on your behalf.
The gem. The RE320 arrived on desks as "the SM7B alternative", and the comparison is fair for tone, body and broadcast intent — but it is not fair for output. The SM7B sits at −59 dBV/Pa, the RE320 at −52: seven decibels apart, which is the difference between needing a booster on a 50 dB interface and not needing one. The accessory list travelled with the reputation, and nobody re-ran the arithmetic. If you bought the Dynamite because the internet said an RE320 is "another gain-hungry broadcast dynamic", the internet was describing a different microphone.
Practical. On a 60 dB interface, try it without the booster first and listen to the noise floor in a silent room with the fader up. If it is clean, the box in the middle is one more connector, one more power draw on the phantom rail, and one more thing to debug. If it is not, the Dynamite is a reasonable fix — just make the decision by listening, because the published data does not contain the answer.