[Jon S.]

I wasn't sure where to put this - I hope here's OK.

I'm very pleased with my 3 Neunaber power supplies. They're small, reasonably priced ($20 @), and work well with everything I've tried them with.

https://neunaber.net/collections/access ... wer-supply

From Neunaber (with whom I'm unrelated):

Don't be fooled by how tiny this power adapter is—it powers up to 5 of our pedals with ease (with a multi-plug cable, not included) and works with almost any pedal with a 9V center-negative power input.

Not only has our rigorous testing determined this little adapter to be much quieter than other common switching-type power supplies, it's also a great value.

9V DC, 500 mA regulated output, center-negative
World voltage input: 100-240V AC, 50/60 Hz
3 m (10 ft) 22 AWG cable
Right-angle 5.5 mm O.D, 2.1 mm I.D., 9.5 mm L barrel connector
NEMA 1-15 non-polarized plug (for North America)
1.0 x 1.3 x 1.8 inches (25.4 x 33.3 x 45.8 mm)
2.6 oz. (73 g)
CEC Efficiency Level VI (77.05% minimum)
Complies with all applicable safety and EMI standards: UL, FCC, CE, RoHS