---
product_id: 260569171
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: "634314CFA"
currency: XOF
in_stock: true
url: https://www.desertcart.sn/products/260569171-toa-zm-104a-impedance-meter-measures-impedance-of-speaker-lines
store_origin: SN
region: Senegal
---

# Zero adjustment for pinpoint accuracy Measures up to 100k Ohms Direct ohm calibration for effortless readings 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:** 634314CFA
**Availability:** ✅ In Stock

## Summary

> 🎧 Tune into precision, measure with confidence!

## 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?** 634314CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/260569171-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 carrying case, test leads, and an impedance-to-power reference chart for ultimate convenience.
- • **Optimize Your Sound:** Empower your audio projects with precise impedance measurements that maximize speaker performance.
- • **Effortless Readability:** Easy-to-read meter calibrated directly in ohms for quick, no-fuss diagnostics.
- • **Calibrate with Confidence:** Zero adjustment feature guarantees reliable readings across all measurement ranges.
- • **Precision at Your Fingertips:** Accurately measures speaker line impedance up to 100k Ohms, ensuring flawless audio setups.

## Overview

The TOA ZM-104A Impedance Meter is a professional-grade tool designed to measure speaker line impedance up to 100k Ohms with high accuracy. Featuring zero adjustment for calibration across all ranges and an easy-to-read meter calibrated directly in ohms, it ensures precise diagnostics. The package includes a carrying case, test leads, and an impedance-to-power reference chart, making it an essential device for audio professionals and enthusiasts aiming for optimal sound performance.

## 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 Ohms

## 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 |
| Batteries | 4 AA batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | #231,045 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #99 in Sound & Noise Meters |
| Brand | TOA |
| Color | Black |
| Customer Reviews | 4.0 4.0 out of 5 stars (19) |
| Date First Available | November 20, 2007 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 1.54 pounds |
| Item dimensions L x W x H | 10 x 6 x 3 inches |
| Item model number | ZM-104A |
| Lower Temperature Rating | 23 Degrees Celsius |
| Manufacturer | TOA Electronics |
| Measurement Type | Ohmmeter |
| Min. Operating Voltage | 6 Volts |
| Part Number | ZM-104A |
| Power Source | Battery Powered |
| Product Dimensions | 10 x 6 x 3 inches |
| Specification Met | Cat I |
| Style | Modern |
| Upper Temperature Rating | 104 Degrees Fahrenheit |

## Product Details

- **Brand:** Toa
- **Power source:** Battery Powered
- **Style:** Modern
- **Colour:** Black
- **Item weight:** 700 Grams

## 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

- 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
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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-02-07*