Extech
Extech 407730 Digital Sound Level Meter
$114Cheaper
Best Sound Level Meters · head-to-head
Extech 407730 Digital Sound Level Meter vs Galaxy Audio CM-140 Check Mate SPL Meter
A sourced, side-by-side comparison. Extech 407730 Digital Sound Level Meter is cheaper at $114. Every spec and price links to its source.
Galaxy Audio
Galaxy Audio CM-140 Check Mate SPL Meter
$179.99
Which is better: the Extech 407730 Digital Sound Level Meter or Galaxy Audio CM-140 Check Mate SPL Meter?
On the specs we track, they're closely matched. The Extech 407730 Digital Sound Level Meter is the cheaper at $114.
See Extech 407730 Digital Sound Level Meter on Amazon See Galaxy Audio CM-140 Check Mate SPL Meter on Amazon
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Extech 407730 Digital Sound Level Meter | Galaxy Audio CM-140 Check Mate SPL Meter |
|---|---|---|
| US price | $114 | $179.99 Current Sweetwater retail |
| Brand | Extech | Galaxy Audio |
| Released | — | — |
| Measurement range (dB) | 40 to 130 dB | Lo 32-80 dB, Med 50-100 dB, Hi 80-130 dB |
| Accuracy (dB) | ±2 dB | ±1.5 dB |
| Frequency weighting | A, C | A (per IEC 651/ANSI S1.4 Type 2) |
| Time weighting | Fast/Slow | Fast/Slow |
| Resolution (dB) | 0.1 | 0.1 |
| Data logging | No | No |
| Microphone type | 0.5 in. (12.7mm) electret condenser | Electret condenser |
Sources — Extech 407730 Digital Sound Level Meter: extech.com (verified 2026-08-09). Galaxy Audio CM-140 Check Mate SPL Meter: galaxyaudio.com (verified 2026-08-09).
What's the difference between the Extech 407730 Digital Sound Level Meter and Galaxy Audio CM-140 Check Mate SPL Meter?
Where the two actually differ on the specs we track (4 of 7). Matching specs are omitted.
- Measurement range (dB): Extech 407730 Digital Sound Level Meter 40 to 130 dB vs Galaxy Audio CM-140 Check Mate SPL Meter Lo 32-80 dB, Med 50-100 dB, Hi 80-130 dB
- Accuracy (dB): Extech 407730 Digital Sound Level Meter ±2 dB vs Galaxy Audio CM-140 Check Mate SPL Meter ±1.5 dB
- Frequency weighting: Extech 407730 Digital Sound Level Meter A, C vs Galaxy Audio CM-140 Check Mate SPL Meter A (per IEC 651/ANSI S1.4 Type 2)
- Microphone type: Extech 407730 Digital Sound Level Meter 0.5 in. (12.7mm) electret condenser vs Galaxy Audio CM-140 Check Mate SPL Meter Electret condenser