stute.x1A PC Audio Analyzer

Precise measurements up to 90kHz!

Measurements up to 90kHz@192k sample rate
Find the best speaker driver transmission range.
Check the audio Filter behavior (Cutoff frequency...)
Test your audio filter impedance EQ-circuit (RC/RLC)
Verify the bass reflex port tuning. IDENTIFY AND IMPROVE SOUND ERRORS
Test your audio amplifier or TONE/EQUALIZER CONTROL function
Measure the driver thiele small parameter (Vas, qts,...)
Analyze the signal distortion  (k2..k7)

Application samples

Key features

Frequency range
Wide measurement range up to 90kHz
Usage of a standard USB audio interface with MIC input 
high repeat accuracy for electrical & acoustical measurement
User interface
User & touch-screen friendly Design. No overloaded screens.
Multi-channel measurement and powerful xy screen 
Microphone correction via ASCII file 
Audio signal source
Audio signal generator included
SPL measurement
SPL correct acoustical measurement supported

How It Works

Step 1

Connect your USB audio interface to your PC.

Step 2

Install stute.x1A and configure initial the Audio Analyzer system.

Step 3

Ready: Start with your first measurements.


XY screen

stute.x1A Starter PRO

For your quick start

stute.x1A Starter Kit: The Kit includes the software stute.x1A, a measurement microphone with XLR cable (10m), an USB audio interface, the stute.x1S BOX interface and the cable x1S <-> audio interface plus a PDF manual in English.

stute.x1A analyzer

System requirements

A Computer with MS-Windows 10 (32 & 64 bit). Processor i3 1.5GHz or above, screen resolution min. 1024x768 pixel. Internet connection to activate the license.


A Commercial USB Audio interface with headphone output, stereo line input and microphone input.  Level of inputs and outputs must be adjustable at the audio interface per gain control knob. Supported driver ASIO or Windows WDM.  Sample rate 44.1kHz, 48kHz, 96kHz, 176.4kHz, 192kHz.  


The simple interface stute.x1S (only a few passive components) for electrical measurements. Acoustical measurements are without stute.x1S possible. Schematic for free here available (see download). Or as kit.


INterface for stute.x1A

stute.x1S BOX

x1S is delivered as a simple kit that can be assembled without any previous knowledge: Printed circuit board (PCB), components, case, aluminum front & real panel (x1S size 66x66x28mm)  


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