---
product_id: 25900828
title: "TOA ZM-104A Impedance Meter, Measures Impedance of Speaker Lines Up to 100k Ohms, Zero Adjustment for Accuracy On All Ranges, Easy to Read Meter Calibrates Directly in Ohms"
brand: "toa"
price: "€ 604.87"
currency: EUR
in_stock: true
category: "Toa"
url: https://www.desertcart.hr/products/25900828-toa-zm-104a-impedance-meter-measures-impedance-of-speaker-lines
store_origin: HR
region: Croatia
---

# Direct ohm calibration Measures up to 100kΩ Zero adjustment for precision TOA ZM-104A Impedance Meter, Measures Impedance of Speaker Lines Up to 100k Ohms, Zero Adjustment for Accuracy On All Ranges, Easy to Read Meter Calibrates Directly in Ohms

**Brand:** toa
**Price:** € 604.87
**Availability:** ✅ In Stock

## Summary

> 🎯 Nail your audio setup with pinpoint impedance accuracy!

## Quick Answers

- **What is this?** TOA ZM-104A Impedance Meter, Measures Impedance of Speaker Lines Up to 100k Ohms, Zero Adjustment for Accuracy On All Ranges, Easy to Read Meter Calibrates Directly in Ohms by toa
- **How much does it cost?** € 604.87 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/25900828-toa-zm-104a-impedance-meter-measures-impedance-of-speaker-lines)

## Best For

- toa enthusiasts

## Why This Product

- Trusted toa brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **All-in-One Kit:** Comes complete with test leads, carrying case, and an impedance-to-power conversion chart—ready for any job.
- • **Built for the Field:** Compact, lightweight design with long battery life keeps you powered through extended projects.
- • **Instant Readability:** Easy-to-read meter calibrated directly in ohms for quick, confident diagnostics.
- • **Precision Meets Power:** Zero adjustment ensures spot-on accuracy across all impedance ranges.
- • **Broad Spectrum Measurement:** Effortlessly measures speaker line impedance up to a massive 100,000 ohms.

## Overview

The TOA ZM-104A is a professional-grade impedance meter designed for precise measurement of speaker lines up to 100k ohms. Featuring zero adjustment for accuracy, a direct-reading ohm meter, and a comprehensive kit including test leads and a conversion chart, it’s engineered for audio pros and tech-savvy managers who demand reliable, on-the-go diagnostics.

## Description

TOA ZM-104A Impedance Meter, Measures Impedance of Speaker Lines Up to 100k Ohms, Zero Adjustment for Accuracy On All Ranges, Easy to Read Meter Calibrates Directly in OhmsThe ZM-104A Impedance Meter can measure the impedance of speaker lines easily in the same manner as a circuit tester measures resistance.Key FeaturesImpedance-to-Power Conversion ChartMeasures Impedance of Speaker Lines Up to 100k OhmsZero Adjustment for Accuracy On All RangesEasy to Read Meter Calibrates Directly in OhmsIncludes carrying case, test leads and impedance to power reference chartSpecificationsPower Source: R6 x 4 (1.5 V DC x 4)Current Consumption: 39 mAReading: Direct reading meter, unit: ΩMeasurement Range: x1 range: 5 Ω - 1 kΩ, x10 range: 50 Ω - 10 kΩ, x100 range: 500 Ω - 100 kΩAccuracy: ±10 %Oscillation Frequency: 1 kHz, ±10 %Battery Life When Continuously Used: x1 range: 30 h, x10 range and x100 range: 60 hOperating Temperature: -5°C to +40°C (23°F to 104°)Dimensions: 120 x 220 x 63 mm (4.72" x 8.66" x 2.48") (carrying case)/110 x 180 x 58 mm (4.33" x 7.09" x 2.28") (unit only)Finish: ABS resin, blackWeight; 700 g (1.54 lb) (including carring case, without batteries)Accessory: 1 Set Test leadsMeasurement Category: CAT I

## Features

- Impedance-to-Power Conversion Chart
- Measures Impedance of Speaker Lines Up to 100k Ohms
- Zero Adjustment for Accuracy On All Ranges
- Easy to Read Meter Calibrates Directly in Ohms
- Includes carrying case, test leads and impedance to power reference chart

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004KO1AS8 |
| Best Sellers Rank | #189,052 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #86 in Sound & Noise Meters |
| Brand | TOA |
| Brand Name | TOA |
| Color | Black |
| Customer Reviews | 3.9 out of 5 stars 18 Reviews |
| Item Dimensions | 10 x 6 x 3 inches |
| Item Weight | 700 Grams |
| Item dimensions L x W x H | 10 x 6 x 3 inches |
| Lower Temperature Rating | 23 Degrees Celsius |
| Manufacturer | TOA Electronics |
| Measurement Type | Ohmmeter |
| Minimum Operating Voltage | 6 Volts |
| Model | ZM-104A |
| Part Number | ZM-104A |
| Power Source | Battery Powered |
| Specification Met | Cat I |
| Style | Modern |
| Style Name | Modern |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 104 Degrees Fahrenheit |

## Product Details

- **Brand:** TOA
- **Color:** Black
- **Item Weight:** 700 Grams
- **Power Source:** Battery Powered
- **Style:** Modern

## Images

![TOA ZM-104A Impedance Meter, Measures Impedance of Speaker Lines Up to 100k Ohms, Zero Adjustment for Accuracy On All Ranges, Easy to Read Meter Calibrates Directly in Ohms - Image 1](https://m.media-amazon.com/images/I/61pVWBAQjkL.jpg)

## Questions & Answers

**Q: The readings I getting don’t make sense I am testin a Bogen SPT 15A I get a reading of 8 ohms at 10x divided by 4900 is 64 what am I doing wrong**
A: That horn has a selector to choose wattages via 25v/70v, or if you have the spt-158a is 8 ohms.
So do you have a 70voly system or 8 ohms

## Frequently Bought Together

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-07-27*