Electro Harmonix 9,6VDC 200mA Power Supply

Recently received a gift of a guitar pedal. Unfortunately that pedal doesn't have a battery option and I didn't have any adapters. Read many reviews and said this fit the bill on requirements. No hissing or popping sounds. Worked flawlessly. Build quality seems very decent for the price point. Would recommend for single pedal players 👌

Good power supply, stable signal, but very noisy.
Not the signal itself, the signal is clean but the unit always emanates this humming sound from the transformer. No issue on gigs or when practicing loud or with headphones, but definitely an issue if you're practicing with a more quiet volume.
Other than that, works flawlessly.