# QA40x Release 1.181

**URL:** <https://forum.quantasylum.com/t/qa40x-release-1-181/930>\
**Category:** QA40x\
**Created:** [July 13, 2023, 8:13pm UTC](https://forum.quantasylum.com/t/qa40x-release-1-181/930 "2023-07-13T20:13:59Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![matt](https://avatars.discourse-cdn.com/v4/letter/m/a6a055/32.png) [@matt](https://forum.quantasylum.com/u/matt)\
**Post date:** [July 14, 2023, 5:33pm UTC](https://forum.quantasylum.com/t/qa40x-release-1-181/930/6 "2023-07-14T17:33:49Z")

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Hi @BKDad, yes, correct. The QA401 software is called “QA Analyzer”

Hi @Moto, the 1.183 software is up and extends the notch gain parameter limits up to 30 dB. There are also some new measurements for those using a notch, and make it really fast and easy to get THD, THDN, SNR and Dynamic Range when using a notch. There’s a small tutorial at the link below.

> [@QA40x Release 1.183](https://forum.quantasylum.com/t/qa40x-release-1-183/931):
>
> Release 1.183 is located [HERE](https://github.com/QuantAsylum/QA40x/releases/tag/1.183) and includes some last minute changes that didn’t make it into 1.181: Extends “Notch Passband Gain (dB)” allowed values from 18 to 30 dB Adds measurements: THD dBr, THDN dBr, and SNR dBr. These are probably only useful for measurements made with an active notch Support for LOGINTERP field in user weighting files. This probably should become the default behavior for all weighting files. Cleanup on User Weighting dialog and button logic The new measurements that we…

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