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Notes on Electrostatic Headphones
If enabled, the Holographic matrix fundamentally re-shapes the transfer function of the actual amplifying
circuit to do its job. So again, the delity of the signal is as if the Holographic matrix was designed integral to the
circuit. This is a highly-unusual design, as normally signal processing functions add extra circuits to the main amplication
circuit. Such additional circuitry cannot but negatively impact sound quality when in use and often even when disabled.
Electrostatic headphones require very high voltages for operation. For example, Stax are around 101dB @ 100V,
compared to around 105dB @ 1V for a common inecient full size headphone. On top of that, they need a 'bias
voltage,' usually 580V for modern Stax.
The iCAN Phantom oers both the original (normal) 230V Bias for 6-pin plug connected Stax headphones and adjust-
able bias from 500V to 640V (including a dedicated 580V setting for Stax Pro bias) for 5-Pin connected Stax electrostat-
ic headphones. It can also accommodate many other manufacturers electrostatic headphones if adapters to Stax 5-Pin
pro connection are used..
Dierent bias settings may be tried. Note that it will take a considerable time for the voltage to fall from a previous
higher setting. Therefore, if testing dierent bias settings, it is best to start with the lowest setting and slowly work up
towards the nominal voltage.
More bias produces a louder mid-range, while the bass remains at the original level. So lower bias may give a more
warm sound, higher more bright.
Exceeding the rated bias for a given headphone may damage it, so it is not recommended and exceeding the rated
bias is done at your own risk.
Warning: AMR/iFi is not responsible for any damage arising from using the iCAN Phantom with incorrect settings.
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