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Curious problem measuring distortion with QA403 and Alpine PDX F4 amp
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2
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183
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June 8, 2025
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Crosstalk change
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4
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193
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June 4, 2025
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Surface Dial to Control QA40x
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0
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210
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May 30, 2025
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Attenuator Control Board in Measuring Power Amps document
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3
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179
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May 29, 2025
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Ctrl + "Up Arrow" increment
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3
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112
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May 29, 2025
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Testing Sources with No Input
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5
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249
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May 25, 2025
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I2s connector use for Input data
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0
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119
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May 20, 2025
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Amplifier with 60 Hz Hum
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7
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359
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May 19, 2025
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QA403 Test / Calibration question
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20
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656
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May 12, 2025
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Q40x request for troubleshooting intermittents
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5
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147
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May 1, 2025
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To terminate or not? QA403
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2
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191
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April 28, 2025
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SOLVED: QA403 software runs on Linux but can't see device (device and software work on Windows)
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5
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770
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April 19, 2025
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Auto pad feature request
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3
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121
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April 17, 2025
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QA403 384Khz sampling rate
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20
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1421
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April 15, 2025
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How get a read of the Signal Input In dBu
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1
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133
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April 15, 2025
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How to set the delay?
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3
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130
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April 7, 2025
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Creating a log plot of a potentiometer
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7
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245
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March 31, 2025
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Just got my new QA403 along with QA451B and had some questions
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14
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1342
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March 16, 2025
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Amp Gain & Distortion Autoset Limit Issues
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10
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325
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March 14, 2025
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Intermodulation distortion?
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16
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472
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March 9, 2025
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IMD SMPTE Channels Skewed
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5
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157
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March 8, 2025
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[QA403] - ASIO Driver - When?
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30
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1835
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March 7, 2025
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Some Audio Adapter Cables
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4
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762
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March 1, 2025
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NEWBIE Warning! Preamp testing Setup
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3
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260
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February 28, 2025
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Cable questions
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6
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325
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February 27, 2025
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QA403 - prelease 1.210 - THD Error from -4dbV to 0dBV Generator
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8
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299
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February 24, 2025
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QA401H on QA402
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24
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1303
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February 18, 2025
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Is it possible to run automated test (AmpFrequencyResponse) over REST API?
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2
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169
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February 13, 2025
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"Object reference not set to an instance of an object" when using "-HEADLESS"
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1
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132
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February 11, 2025
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dB and THD don't line up on graph
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2
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165
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February 9, 2025
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