Germanium treble booster

Using this spice model, we can simulate a typical Germanium treble booster.

To find out how this booster actually performs, we will look at the frequency response chart:

The output doesn’t have a peak, but edges to its max at the maximum measured frequency of 15kHz. To have a comparison with the Silicon booster, we measure at a frequency of 2744Hz. At this frequency, the output is at -3dB from the maximum output of 15.5dB. The rangemaster is indeed a treble booster, but differs a bit from the silicon version. As you can see from the two graphs below, there is also a great difference in the way this frequency is distorted, with respect to the frequency at note A4: