Tech 21 · Preamp
XB Driver
18V · 70 mA · maker
Tech 21 XB Driver power requirements
18V DC · centre negative · draws 70mA · needs a supply of at least 250mA
from the maker
“Utilizes included 18V DC universal auto-switching power supply with interchangeable international plugs for use anywhere in the world. … Tech 21 Model #DC18 100-240V; 250mA; center negative. … Maximum power consumption: approx 70mA.” source
Checked 2026-10-14
Size
190.5 × 120.65 × 50.8 mm (7.50 × 4.75 × 2.00 in)
Width × depth × height, from the manufacturer.
Power supplies that can run it
Each has an output that can power it, checked against its published figure. Plan the whole board to see what runs everything.
- Walrus Audio Canvas Power 1515 outputs · isolatedSweetwater
- MXR M238 ISO-Brick10 outputs · isolatedSweetwater
- Strymon Zuma9 outputs · isolatedSweetwater
- Truetone 1 SPOT Pro CS1212 outputs · isolatedSweetwater
- Cioks DC77 outputs · isolatedSweetwater
- MXR M239 Mini ISO-Brick5 outputs · isolatedSweetwater