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Question Can the Nova pedals run on a 9v PSU

Answer
Yes - all Nova pedals can run on 9v as long as the PSU can supply the required 300mA. There is no loss of audio fidelity when using a 9v power supply, the only difference is a 3dB loss of headroom from +10dBu to +7dBu (which is still way more than most competing pedals).