{"product_id":"toa-zm-104a","title":"TOA ZM-104A Impedance Meter For Speaker Lines","description":"\u003cp\u003eThe TOA ZM-104A is built for audio installers and system technicians who need to verify speaker line impedance during installation, commissioning, or troubleshooting without access to a bench. Operating on four AA batteries and delivering up to 60 hours of continuous runtime, it supports fieldwork in venues, houses of worship, commercial installs, and distributed audio systems where AC power is inconvenient or unavailable.\u003c\/p\u003e\u003cp\u003eThree selectable measurement ranges cover 5 ohms to 100 kilohms, making the ZM-104A suitable for both low-impedance speaker verification and high-impedance 70V and 100V line checks across long cable runs. A built-in 1 kHz oscillator provides a consistent test signal, and the direct-reading analog meter delivers results without requiring conversion tables beyond the included graphic impedance-to-power reference. The carrying case and test leads are included, keeping the unit ready to deploy without additional accessories.\u003c\/p\u003e\u003cp\u003eCompared to general-purpose multimeters, the ZM-104A is purpose-designed for speaker circuit measurement, with ranges and readout calibrated specifically for audio load values. For installed sound teams, touring system technicians, and AV integrators who regularly qualify speaker wiring before system handoff, it eliminates the guesswork that comes from adapting non-audio test equipment to audio line verification tasks.\u003c\/p\u003e","brand":"TOA ELECTRONICS, INC","offers":[{"title":"Default Title","offer_id":52227140288696,"sku":"67891","price":624.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/7382\/4696\/files\/67891_TOA-ZM-104A-Impedance-Meter-For-Speaker-Lines_ALT01sqr.jpg?v=1789137220","url":"https:\/\/soundpro.com\/products\/toa-zm-104a","provider":"SoundPro","version":"1.0","type":"link"}