Production Line

Dummy Load & Standard Resistance A-1057/1058


For Test and Maintenance of Measurement Instruments

Standard Resistor


Dummy Load


Supports your inspection and maintenance of measuring instruments.

Product Overview

Standard Resistor: Model A-1057
A highly accurate and stable resistor for standard impedance. Used to calibrate the impedance at your work site.
  • Resistance: 0.5, 1, 2, 4, 8, 16Ω ±0.1%
  • Capacity: 8〜9W / 0.5〜16Ω max. 4V / 30Ω or more
Dummy Load: Model A-1058
Resistor with great power. Used for testing the performance power amplifiers.
  • 4Ω / 25W x 4
  • Precision: 0.1%
Calibration Devices
Model Products Remarks
A-1511 Pistonphone (for standard SPL) Precision: ±0.1dB
A-1512 SPL Calibration Unit Precision: ±0.3dB
A-1056 Standard Impedance (1Ω / 4Ω x 2 pcs: 1 pair) Precision: 0.2%
A-1059 Dummy Load (Large model: 2Ω/100W x 4 with fan) Precision: ±0.1%
A-1510 Voltage, current and frequency measurement unit