Zoom · Multi-Effect

G1 FOUR

9V · ≥500 mA supply · maker

Zoom G1 FOUR power requirements

9V DC · centre negative · needs a supply of at least 500mA
digital · from the maker
“Power AC adapter: 9V DC 500mA center negative (ZOOM AD-16) | 4 AA batteries” source
Checked 2026-10-13

130 × 156 × 42 mm (5.12 × 6.14 × 1.65 in)

Width × depth × height, from the manufacturer.

Each has an output that can power it, checked against its published figure. Plan the whole board to see what runs everything.