The ZM-104 from TOA Electronics is a portable impedance meter that can measure the impedance of speaker lines up to 100 k ohms. It has an adjustable zero for accuracy on all ranges. It runs on four "AA" batteries and has an easy-to-read meter that calibrates directly in ohms. It includes a carrying case, test leads, and impedance-to-power reference chart.
Ask Our Experts800-606-6969
Hello, Log InAccount & Orders
Video Chat with a Pro Audio Expert - Live
Special Order
Expected availability: 3-7 Business Days
This item cannot be canceled or returned.
Protect Your Gear
Add a protection plan from $97.99
See Options
Toa Electronics ZM-104A Overview
Toa Electronics ZM-104A Specs
| Reading Method | |
| Measurement Range | |
| Oscillation Frequency | |
| Accuracy | |
| Power Supply | |
| Service Life | |
| Dimensions | |
| Weight |
Packaging Info
| Package Weight | |
| Box Dimensions (LxWxH) |
Toa Electronics ZM-104A Reviews
Excellent Product!
By Timothy
Rated 5 out of 5
Date: 2021-02-10
I decided on this model of impedance meter because the last TOA analog meter lasted me 13 years of constant use and abuse. This one appears to to be just as good.
Excellent Meter
By electritech
Rated 5 out of 5
Date: 2010-07-14
I really like this meter, it is easy to use and one of the best I have seen. ...
See any errors on this page?
I want to measure the winding impedance of ...
I want to measure the winding impedance of unmarked audio transformers. Will this meter work for that?
Thank you for your question. You can use the test leads included in this unit and attach to both ends of the transformer to test the impedance.
Date published: 2019-05-22