# Extech 407730 Digital Sound Level Meter vs BAFX Products Advanced Decibel Meter / Sound Level Reader: specs and price compared

A sourced, side-by-side comparison of the Extech 407730 Digital Sound Level Meter (Extech) and BAFX Products Advanced Decibel Meter / Sound Level Reader (BAFX Products) among sound level meters. BAFX Products Advanced Decibel Meter / Sound Level Reader is the cheaper of the two at $54.99.

## Side by side

| Spec | Extech 407730 Digital Sound Level Meter | BAFX Products Advanced Decibel Meter / Sound Level Reader |
| --- | --- | --- |
| US price | $114 | $54.99 |
| Brand | Extech | BAFX Products |
| Measurement range (dB) | 40 to 130 dB | 30-130 dBA, 35-130 dBC |
| Accuracy (dB) | ±2 dB | ±1.5 dB |
| Frequency weighting | A, C | A, C |
| Time weighting | Fast/Slow | Fast (125ms) / Slow (1s) |
| Resolution (dB) | 0.1 | — |
| Data logging | No | Stores up to 4,700 data points via USB with included Soundlab software (Windows only) |
| Microphone type | 0.5 in. (12.7mm) electret condenser | Electret condenser |

## Key differences

- Measurement range (dB): Extech 407730 Digital Sound Level Meter 40 to 130 dB vs BAFX Products Advanced Decibel Meter / Sound Level Reader 30-130 dBA, 35-130 dBC
- Accuracy (dB): Extech 407730 Digital Sound Level Meter ±2 dB vs BAFX Products Advanced Decibel Meter / Sound Level Reader ±1.5 dB
- Time weighting: Extech 407730 Digital Sound Level Meter Fast/Slow vs BAFX Products Advanced Decibel Meter / Sound Level Reader Fast (125ms) / Slow (1s)
- Data logging: Extech 407730 Digital Sound Level Meter No vs BAFX Products Advanced Decibel Meter / Sound Level Reader Stores up to 4,700 data points via USB with included Soundlab software (Windows only)
- Microphone type: Extech 407730 Digital Sound Level Meter 0.5 in. (12.7mm) electret condenser vs BAFX Products Advanced Decibel Meter / Sound Level Reader Electret condenser

## Sources

- Extech 407730 Digital Sound Level Meter: https://www.extech.com/products/407730/ (extech.com, verified 2026-08-09)
- BAFX Products Advanced Decibel Meter / Sound Level Reader: https://bafxpro.com/products/bafx-products-decibel-meter-sound-level-reader-w-battery-advanced-sound-meter (bafxpro.com, verified 2026-08-09)

Canonical: https://frontdeskreview.com/gear/sound-level-meters/extech-407730-vs-bafx-products-advanced-decibel-meter/
Cite: Per The Front Desk Review, Extech 407730 Digital Sound Level Meter ($114) vs BAFX Products Advanced Decibel Meter / Sound Level Reader ($54.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/sound-level-meters/extech-407730-vs-bafx-products-advanced-decibel-meter/
License: CC BY 4.0.