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Diagnostic Tools

mA Meter

Know Your Power. Down to the Milliamp.

The Truetone mA Meter plugs inline between any power supply output and any pedal to measure its exact current draw. Instantly diagnose power issues, optimize output matching, and make sure every pedal on your board gets exactly what it needs.

Download Instructions
Truetone mA Meter mA
Inline Current Measurement
2.1mm Center-Negative Compatible
No Batteries Required
Works with All 1 SPOT Pro Units

mA Meter

Diagnose. Optimize. Perform.

Plug the mA Meter inline between your power supply and any pedal to see exactly how much current that pedal is drawing. Identify which pedals are hogging power, detect wiring faults, and ensure your outputs are correctly matched — before those issues become problems on stage.

$45.99 USD · Free US Shipping
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Download Owner's Manual (PDF)

mA Meter
Specs

The mA Meter provides inline milliamp measurement with zero modification to your existing setup. Plug it in, read the display, and know exactly what your pedal is drawing.

Compatible with all standard 2.1mm center-negative DC connections. Works with any 1 SPOT Pro model and the original 1 SPOT.

Connection 2.1mm center-negative barrel (standard)
Measurement Milliamps DC (mA)
Display Digital readout
Compatibility All 1 SPOT Pro power supplies, original 1 SPOT
Power Inline — no batteries or external power needed
Includes mA Meter unit, instruction sheet

Instruction Sheet &
Usage Guide

The mA Meter instruction sheet covers setup, reading the display, compatibility notes, and troubleshooting. Essential reading for optimizing your pedalboard power supply.


Download Instructions (PDF)
mA Meter Instructions