NTi Audio · XL3 · Handheld sound level meter
XL3 Acoustic Analyzer
CurrentClass 1 sound level meter and acoustic analyser with a 4.3-inch touch display, single-range measurement, 1/3-octave spectrum, reverberation time, optional sound insulation and STIPA, and built-in WiFi, LAN and web server for remote access. Microphones are interchangeable with an electronic data sheet; the instrument is type approved in several countries with the M2230 and M2340 microphones.
Launched 2022. Specifications verified on .
- Type
- Handheld sound level meter
- Class
- Class 1
- Channels
- 1
- Octave bands
- 1/1 and 1/3
- Connectivity
- USB-C, USB-A, WiFi 2.4 GHz, LAN (via USB adapter), 4G/5G via external gateway, GPS (accessory)
- Weight
- 500 g
- Battery life
- 8 h
Manufacturer list price
USD 3,340 (Base unit without microphone, NTi Audio Inc. US web shop; microphones and option bundles priced separately.) — published by the manufacturer at us.shop.nti-audio.com, seen on . Prices from distributors are not recorded.
Specifications
As published by NTi Audio. Fields the manufacturer does not publish are omitted rather than estimated.
| Specification | Value |
|---|---|
| IEC 61672-1 class | Class 1 |
| Standards | IEC 61672 class 1, ANSI S1.4 class 1, IEC 61260 class 1, ANSI S1.11 class 1, ISO 3382 and ASTM E2235 (reverberation time), IEC 60268-16 editions 2 to 5 (STIPA, optional), ISO 16283, ISO 717, ASTM E336 (sound insulation, optional) |
| Pattern approvals | PTB (Germany), METAS (Switzerland), LNE (France), CEM (Spain), CMI (Czech Republic), CPA (China), Portugal, Hungary, Austria |
| Recommended calibration interval | 12 months |
| Specification | Value |
|---|---|
| Channels | 1 |
| Measurement range | 17.1 to 137.8 dB(A) with M2230; 17.4 to 138.3 dB(A) with M2340; 21 to 144 dB(A) with M2211; 25 to 153 dB(A) with M2215; 27 to 146 dB(A) with M4261; single range |
| Linearity range | 24 to 137 dB(A) with M2230; 25 to 138 dB(A) with M2340; 29 to 144 dB(A) with M2211; 33 to 153 dB(A) with M2215; 33 to 146 dB(A) with M4261 |
| Peak range | LCpeak 41 to 140 dB with M2230; 41 to 141 dB with M2340 (linear range at 1 kHz) |
| Frequency range | 4.3 Hz to 23 kHz (level measurement); 0.3 Hz to 40 kHz hardware bandwidth |
| Frequency weightings | A, C, Z |
| Time weightings | F, S, I |
| Parameters | Leq, Lmax, Lmin, Lpeak, LAE, Leq,T, Taktmax, LN percentiles, RT60 (T20, T30; EDT and T15 optional), D, Dn, DnT, R' (optional), STI, CIS (optional) |
| Specification | Value |
|---|---|
| Octave bands | 1/1 and 1/3 |
| Octave band filter class | class 1 (IEC 61260, ANSI S1.11), base 10; 1/1 octave 8 Hz to 16 kHz, 1/3 octave 6.3 Hz to 20 kHz |
| Reverberation time | Yes |
| Building acoustics | Yes |
| Speech intelligibility | STIPA |
| Audio recording | Yes |
| Specification | Value |
|---|---|
| Shortest logging interval | 100 ms (Extended Noise option); 1 s standard |
| Memory | removable 32 GB micro-SDHC card (FAT32/NTFS); external SSD supported |
| Specification | Value |
|---|---|
| Microphone | M2230 or M2340 1/2" class 1 certified (type approved); M2211, M2215, M4262, M2914 also offered; electronic data sheet read automatically |
| Detachable preamplifier | Yes |
| Outdoor microphone kit | WP30-90 weather protection; weatherproof case IP43/65 (600 000 704/05) |
| Weather sensors | Yes |
| Display | 4.3" IPS colour capacitive multi-touch display, 480 x 800 |
| Battery | removable rechargeable Li-Ion, typ. 3.6 V / 6000 mAh |
| Battery life | 8 h |
| External power | 9 V DC or USB-C |
| Weight | 500 g |
| Dimensions (mm) | 210 x 85 x 45 |
| IP rating | IP51 |
| Operating temperature (°C) | -10 to 50 (mechanical section; power section of the same sheet states -20 to 60) |
| Specification | Value |
|---|---|
| Connectivity | USB-C, USB-A, WiFi 2.4 GHz, LAN (via USB adapter), 4G/5G via external gateway, GPS (accessory) |
| Remote control | built-in web server and file server (browser), NTi Connect, MeasurEye cloud platform, optional API |
| Software | MeasurEye, Data Explorer, Sound Insulation Reporter, Room Acoustics Reporter, Sound Power Reporter, NTi Connect |
| Latest firmware | V1.62, October 2026 |
Where this data comes from
| Kind | Document | Accessed |
|---|---|---|
| Product page | XL3 Acoustic Analyzer | |
| Datasheet | XL3 Acoustic Analyzer Specifications | |
| Price list | Buy XL3 Acoustic Analyzer (NTi Audio US shop) | |
| Firmware notes | XL3 Firmware Revision History | |
| Press release | PTB Type Approval Certificate for the XL3 | |
| Manual | XL3 User Manual V1.60, Rev. 2026-07-28 | |
| Datasheet | XL3 Specifications Techniques (French-language sheet, 05.22) |
Verified on . Only the manufacturer’s own published material is used; distributor pages are not sources.
Spec out of date? Tell us (reference nti-xl3).
Verified owner reviews
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Known issues and firmware notes
Hardware and firmware problems reported by owners, with the firmware version concerned and any manufacturer response.
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Feature requests
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Read next
- How to choose a sound level meter · Class 1 vs class 2, integrating vs non-integrating, parameters by application, options and licences, calibration.
- Class 1 vs class 2 sound level meters · IEC 61672-1 tolerances, what the classes do and do not say, and where each is typically required.
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