Steve Meade SMD AMM-1 Audio Multimeter/DMM/O-Scope/Power+Impedance Meter


The Audio Multimeter AMM-1 combines useful features of a digital multimeter (DMM), an AC current probe, a Power Meter (Power Factor analyzer), an Impedance Meter, a frequency counter, and a oscilloscope into 1 tool.

Out of stock

Proudly Made By SMD / D’Amore Engineering

The purpose of this tool is to enable the user to:

  • Measure True Amplifier Power output into any load reactive or resistive
  • Measure Common DC voltages
  • Measure DC voltage drops during quick transients on cable runs or battery / charging systems
  • Measure Impedance of speakers at any power or frequency from 20Hz – 1kHz (box rise)
  • Measure Phase Difference between Voltage and Current into reactive loads (Power Factor)
  • Find Tuning Frequency of subwoofer enclosures
  • Tune subwoofer enclosures for maximum power transfer
  • Measure AC Volts (amplifier output)
  • Measure AC Amps (amplifier output)
  • Measure apparent power (VA) output, Phase Angle, and Real Power (Watts) of audio amplifier, or consumption of appliances that run on AC power
  • Measure Frequency of a Sine Wave

What is included?

  • The AMM-1 tool
  • Protective silicon rubber boot
  • Harness
  • This manual
  • Pride of ownership


  • DC Voltmeter: -100 Volts to +100 Volts
  • AC Voltmeter: 0 – 150 VRMS
  • AC Ammeter: 0 – 100 ARMS
  • AC Apparent Power: 0 – 15,000 VA
  • Power Factor: 50 – 100%
  • Frequency: 10 – 20,000 Hz
  • AC Impedance: 0 – 200 Ohms
  • True Power Dyno: 0 – 15,000 Watts
  • Auto-shut off timer: 8 – 10 minutes after ON button is pressed
  • Battery self-test and display of condition when AMM-1 is initialized

Showtime is an Authorized SMD/D’Amore Engineering Dealer

Weight 5 lbs