Tenma Audio Impedance Tester 72-6948 $64.95
General GenRad Labs 1658 Precision RLC Digibridge Impedance Meter $350.00
TC ESI Impedance Bridge Model 250-DA Serial 1394 Electro-MeasurementS Oregon USA $69.99
Tektronix AMT75 75/50 Ohm Impedance Adapter $39.95
Digital Ohmmeter LCD Audio Impedance Test Meter Speaker Voice Resistor System $56.99
TOA ZM-104A Impedance Meter Measures Impedance of Speaker Lines Up to 100k Ohms $79.97
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