Dayton Audio EMM-6
A calibrated, phantom-powered measurement mic that pairs with any interface for spectrum and distortion work.
Used by: Room acoustics · Spectrum analyzer · Microphone test
Measurement & Calibration
Meters and reference mics to keep every test honest.
Browser instruments are honest, but they cannot know your absolute levels. A calibrated meter anchors SPL and loudness results; a reference mic turns your room recordings into comparable data.
These are the tools used to cross-check the meters and tests on this site.
What to look for
- A traceable calibration path (certificate or per-unit file).
- A/C weighting and fast/slow response on SPL meters.
- Wide enough frequency range for the tests you run.
- Data output (USB/file) so results can be compared later.
- Stable readings in real rooms, not just anechoic chambers.
- Simplicity: a tool you will actually use.
Best value
Dayton Audio DATS v3
Electrical and acoustic measurement in one box: T/S parameters, impedance sweeps, and polarity checks for speakers and subs.
Used by: Speaker test · Subwoofer test · THD test
Reference
Galaxy Audio CM-140
A calibrated SPL meter with A/C weighting and fast/slow response — the reference for checking the decibel meter and loudness targets.
Used by: Decibel meter · Loudness meter
Budget
Kiwi Ears Allegro Mini
Ultra-compact USB-C DAC with 0.004% THD+N and 32-bit decoding for clean playback and distortion testing, free of motherboard noise.
Used by: THD test · Dynamic range test · Latency test
Tests for this gear
Last reviewed: