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About the QA40x category
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1
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665
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August 9, 2023
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First version of custom QA40x Audio Analyser
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34
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1078
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January 15, 2026
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I2S bug QA403 after triggering PUT /Settings/Default
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6
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179
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January 12, 2026
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IDLE Feature Request
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4
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122
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January 11, 2026
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Amp Dynamics Automated Automated Test Bug?
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5
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115
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January 11, 2026
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BUG: sample rate and input scale
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4
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164
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January 11, 2026
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An XLR cable adapter
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14
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736
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January 9, 2026
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USB C to B Cable
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0
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44
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January 8, 2026
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Dynamic Headroom Measurement
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2
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77
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January 6, 2026
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QA403 and Tube Amp setup
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23
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431
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January 2, 2026
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Measure power amplifier at the output?
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15
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558
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December 19, 2025
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Generating Other Waveforms
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9
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182
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December 18, 2025
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Looking to learn about ErinH's test setup
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3
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141
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December 10, 2025
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QA403 I2S Input / Output
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24
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1254
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December 9, 2025
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Problems when sampling over 48k... Check your USB hub
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6
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131
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December 3, 2025
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Early rolloff before 20kHz
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5
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62
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November 20, 2025
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Advice re measuring DAC linearity/frequency response. Getting a lot of strange wobble <=100Hz
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7
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132
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November 18, 2025
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What to measure that relates to audible differences
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20
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340
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November 9, 2025
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Measuring THD on an FM Tuner
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4
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111
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November 6, 2025
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A serious error has occured. The information has been logged. The application will Close
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1
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69
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October 31, 2025
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Improved Damping Factor measurement
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7
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190
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October 31, 2025
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I2S & TDM continuity tests
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3
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107
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October 24, 2025
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Measuring classical tape decks
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10
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186
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October 23, 2025
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QA40x Feature request
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58
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2149
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October 22, 2025
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Has the QA403 output out-of-band residual signals?
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43
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808
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October 20, 2025
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QA402/403 I2S expansion specifications
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5
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704
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October 6, 2025
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Calculating Noise Floor from Export Frequency Series
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10
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181
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September 24, 2025
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QA403 additional input protection
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4
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206
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September 22, 2025
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QA403 REST API and attenuator setting
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1
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60
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September 18, 2025
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Considering a Purchase, Have Newbie Questions
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2
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201
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September 13, 2025
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