The TELOS 352 (2 channels) and 353 (3 channels) have been designed to support the Proteus technology developed by Goldmund but can also be used as regular stereo or 3-channel amplifiers.
For those who are not familiar with Proteus, here is a short summary (white papers are available on request for science versed readers):
Proteus is a mathematical modeling technique created by the Goldmund fundamental research team. It computes acoustic corrections that have the unique particularity of perfectly aligning the frequency response, the phase response and the time response of a speaker. This level of perfection has never been achieved before in any other existing audio system. The corrections are included in a configuration file that is loaded inside the preamplifier and each driver is then amplified separately.
Although the performance of such systems is nearly perfect, its disadvantage is the multiplication of the power amplifiers needed to drive the speakers and thus the cost.
The TELOS 352 and 353 solve this cost problem by multiplying the number of amplification channels in one single amplifier case and with one single shared power supply. This makes them the ideal amplifiers for high end audio systems and for Media Room applications. These new amplifiers, like the Telos 350, can be mixed in complex configurations with the already existing Telos 2500, Telos 1000 or Telos 600 because they share the same group delay and the same sensitivity, also providing a substantial economy on large Proteus systems such as the Full Goldmund Epilogue.
The Goldmund TELOS 352 and 353 provide extremely advanced features to protect the amplifiers and the speakers against all mishandling or component failure.
The TELOS 352 and 353 are DC-coupled amplifiers. If the associated preamplifier is badly designed or defective (often true for tube preamps), the speakers could be damaged. In such a case, the DC protection circuit of the TELOS 352 and 353 will automatically turn off the amplifier. This detection circuit is totally immune to any sonic effect.
In the same way, the speakers must be protected against a large amount of high frequency oscillations to avoid any danger for the tweeters, even if these frequencies remain unnoticed. If the TELOS 352 and 353 detect excessive oscillation, the amplifiers will be turned OFF automatically.
If for any reason the temperature of the amplifiers rises too high, a protection circuit switches the amplifiers OFF automatically.
The Telos 352 has the exact same size and design as the Telos 350. The Telos 353 is slightly higher, allowing the insertion of the board for the additional channel. They both benefit from the Goldmund Mechanical Grounding technology as well as the Goldmund Thermal grounding full implementation with gold-plated copper buffer plate.