Sennheiser
e 904
Dynamic · Cardioid · 40–18,000 Hz · a rider regular
- Built to clamp straight onto a drum rim, so no stand has to fight the kit for space.
- 125 g on a clamp — twice the weight of an e 604, with a capsule that reaches 18 kHz.
Frequency response
No response curve yet.
MicSense only draws a curve redrawn from a graph the manufacturer publishes — it never estimates one from the microphone’s class. No published graph has been redrawn for the e 904 yet, so the numbers are in the spec table below.
Polar pattern
Generated from the first-order directivity formula for cardioid. It illustrates the pattern type — it is not a measurement of this individual model.
Specifications
| Manufacturer | Sennheiser |
|---|---|
| Model | e 904 |
| Type | Dynamic |
| Form factor | Clip-on |
| Polar pattern | Cardioid |
| Frequency range | 40–18,000 Hz |
| Sensitivity | 2 mV/Pa · ≈ -54.0 dBV/Pa |
| Max SPL | — not published by the maker |
| Self-noise | — none (passive capsule) |
| Impedance | 350 Ω (nominal) |
| Connector | XLR3M |
| Powering | None (dynamic) |
| Weight | 125 g |
Specifications: Sennheiser specifications page · last checked 2 Oct 2026. These are the maker’s published figures for this model. A dash never means zero: “not published by the maker” means the maker’s documents give no figure; “not yet checked” means MicSense has not confirmed one yet. Spotted an error? Tell us.
MicSense notes
| Price tier | Mid |
|---|---|
| Introduced | — not recorded |
Price tier and “a rider regular” are MicSense’s own judgement, not the maker’s.
What it gets used for
- Toms
- Snare top
MicSense tags microphones by the job on a live stage, not by studio category — so you can filter for “kick in” or “monitor vocal” instead of working backwards from “large-diaphragm condenser”.
e 904 alternatives: closest in published specs
Based on published specifications only — always listen at soundcheck. These are the microphones in the MicSense library whose datasheet figures sit closest to the Sennheiser e 904’s for the same live job, with the reasons. It says nothing about how they sound.
Not compared for the Sennheiser e 904: max SPL not published by the maker · response curve not redrawn yet.
-
Sennheiser
e 604
- Same job: toms, snare top
- Same type: dynamic
- Same cardioid pattern
- Same form: clip-on
- About the same output — within the datasheets’ tolerance
-
Shure
PGA56
- Same job: toms, snare top
- Same type: dynamic
- Same cardioid pattern
- Same form: clip-on
- ≈ 3 dB less output — add about 3 dB gain
-
Shure
SM57
- Same job: toms, snare top
- Same type: dynamic
- Same cardioid pattern
- About the same output — within the datasheets’ tolerance
- Needs a stand or a clamp — the original clips on
Compare it against the alternatives.
MicSense lets you put up to four microphones side by side — spec table, overlaid response curves and polar diagrams on one screen. Free with a free Squaresmile account.