Input signal processing
The frérot has one USB, one coax RCA, one Toslink (optical), and one AES input. The USB input is based on Amanero technology and ensures a low-jitter music signal thanks to two precise oscillators, which is then galvanically isolated by capacitive isolator components.
The signals arriving at the other inputs are also galvanically isolated and de-jittered by means of transformers. This guarantees that no external interference can affect the sensitive signal.
Digital-to-analog conversion
The task of digital-to-analog conversion is performed by a 1794A converter module from Burr Brown. The analog current signal is elaborately converted into a voltage signal in a discrete setup, which is buffered in Class A technology and routed to the output. The frérot is fully balanced to the output.
Power supply
As with the DAC1, each functional unit has its own power supply, and there are ten in total. Unlike the DAC1, all four output channels are supplied by one supply, which is generated by a switching voltage regulator. Adding the pow1 power supply to the frérot replaces the switch mode power supply (i.e. wall wart) and provides a significant upgrade in performance.
Structure
Meticulous attention has been paid to the layout and component selection to ensure that both ensure good sound, which has been verified in many sessions and confirmed by many listeners.
Made in Switzerland
As with the DAC1, all critical work is done exclusively in Switzerland.