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About the QA40x category
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1
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710
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August 9, 2023
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Phonalyzer for QA40x
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15
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258
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July 30, 2026
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QA402/403 I2S expansion specifications
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8
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877
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July 25, 2026
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Revox B77 recording calibration
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6
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175
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July 18, 2026
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Continous measurements via REST API
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0
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48
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July 16, 2026
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QA403 Input and Output Impedance
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1
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67
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July 14, 2026
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Interesting Problem (?) with PWR THD vs FREQ Automated Test
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8
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120
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July 13, 2026
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QA401 noise floor
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6
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135
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July 7, 2026
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Testing amps upto 300W into 8ohms
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4
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206
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June 18, 2026
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QA403 I2S Input / Output
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33
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1744
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June 17, 2026
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USB: startech ST4200SUBM: USB 2.0 hub ok?
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7
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154
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June 6, 2026
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Multiple QA403 devices
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6
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211
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June 5, 2026
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First impressions
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2
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163
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May 27, 2026
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Capture long audio input signal (above 22s~)
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3
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123
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May 27, 2026
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QA403 availability in Eleshop
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3
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278
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May 20, 2026
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"Ringing" in Freq response using Triggered Response/Expochirp with Streamer
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8
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204
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May 19, 2026
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QA403 output on my oscilloscope
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5
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306
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May 10, 2026
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QA403 ADC overflow
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4
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197
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April 27, 2026
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6dB gain with Differential Cables
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4
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572
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April 13, 2026
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I don't understand this 6 dB gain
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3
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382
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April 13, 2026
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QA403 - 1000W audio amp-speaker test issue
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5
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199
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April 11, 2026
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Mesurment setup
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3
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248
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March 25, 2026
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Input bandwidth and display settings
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3
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156
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March 11, 2026
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QA403 Availability
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1
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215
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March 5, 2026
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BUG on QA403x Release 1.222
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5
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251
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March 4, 2026
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Question regarding measuring filterless class D amp
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28
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447
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February 18, 2026
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QA40x software question: plotting individual harmonics
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3
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134
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February 6, 2026
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Weighting for wow and flutter
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2
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227
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February 4, 2026
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Mirror the input to pc
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3
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208
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February 2, 2026
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What is wrong with the THD calculation with ext. Generator
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15
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226
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January 30, 2026
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