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What is the Input Impedance of the ISA 828?

Applies to: ISA 828

Line Input: 10k

Inst Input: >1M

Mic Input:
Pressing the Z In switch steps through each of the four transformer pre-amp input impedance values, as indicated by the corresponding LEDs. By selecting different values for the impedance of the ISA 828 transformer input, the performance of both the ISA 828 pre-amp and the microphone connected can be tailored to set the desired level and frequency response. The impedance values are as follows:

Low – 600Ω

ISA 110 – 1k4Ω

Med – 2k4Ω

High – 6k8Ω

A guide to setting input impedance is available in the Applications section of the ISA 828 Manual.

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