Frequently Asked Questions

Is iFi planning on an LDR?

LDR stands for "Light Dependent Resistor".

What this is, is an passive pre-amplifier using light dependent resistors.


1) We do not make passive Pre-amplifiers. There are good reasons for that.

2) If we ever were to make one, we would never use LDR's.

3) Getting consistent volume tracking in mass-production without multiple point manual tuning per LDR is impossible.

4) LDR's introduce very high levels of harmonic distortion (> 0.1%).

We would use transformer volume control or switched resistor arrays which are free from all these problems.

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