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Amp2 Ultrasonic Output

Hello!

The Amp2 description (https://www.hifiberry.com/shop/boards/hifiberry-amp2/) says that it supports sampling rates from 44.1-192kHz, however I recently discovered that the output is filtered from .2-20 kHz. Is there a way to bypass the filter? I bought the part with the intention of driving an ultrasonic speaker for auditory neuroscience research.

If there's no way to bypass the filter, is there a way for me to still use the Amp2 as a DAC and amply the signal (i.e. gain access to the full sample rate data) with a different amplifier?

Thanks in advance for your help.

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