Hi, I have mentioned this prior, but to get the true Pilium sound it comes from using the Pilium preamps with the Pilium amplifiers, utilizing the P-link connection (XLR) between the Pilium preamps and amplifiers.
You must be careful matching for instance a tube preamplifier that might have an 8 or 10 Volt output to a Pilium amp as the Pilium amplifiers are high gain amplifiers. The Pilium preamps have a voltage gain of 2, where the Pilium amps have a voltage gain of 36.
The output of the Pilium preamps is around 2.5V and works well with the high gain Pilium amplifiers.
You must be careful using a preamp that might have a >8V output as it would be possible to damage the Pilium amplifiers input stage.