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Can I adjust the gain or input buffer on the Fusion Amp Family?
The gain can be trimmed in the HFD software, adjusting the gain and input buffer at the amplifier itselves is not supported.
https://www.hypex.nl/FAQ-Hypex/Fusion-Amp-Family/Can-I-adjust-the-gain-or-input-buffer-on-the-Fusion-Amp-Family