HiFi-Tuning
Supreme³ RCCB
Standard & Diamond version

A Residual-Current Circuit Breaker (RCCB) is not a (automatic) fuse or fuse holder!

Any audio/video set only performs best with the highest mains power quality. After all, this is the supply for your entire audio/video system. Each chain is as strong as its weakest link. Nowadays, audio grade mains spurs and audio grade fuse holders are quite common in the meter cupboard, however, the bottleneck still exists: your „standard“ differential switch. 

The German based company HiFi-Tuning introduces a version specifically designed for the most demanding audio/video enthusiasts who only settle for the very best. It offers the highest possible audio- and video quality. In addition, this differential switch offers enhanced safety: even with deviating wave forms (as often introduced by switch mode power supplies) it switches off reliably, without affecting audio/video quality in any way. In the past we sold Doepke but we now have a better and far more affordable alternative from HiFi-Tuning available.

A differential switch, also called Residual Current Device – RCD or Residual Current Circuit Breaker – RCCB or Ground Fault Circuit Interrupter – GFCI, is obligatory in all home electricity systems. As opposed to a fuse (for instance the Cylindric Fuse Cartridge), which is meant to prevent a fire in case of a short circuit, the main function of a differential switch is to protect against electrocution. A differential switch compares the in- and outgoing currents through live and neutral, the sum of these has to be zero. The only disturbance possible in this balance is, when a certain current flows to earth. If this current flows through the body of a human being, this can be life threatening. This is where the differential switch kicks in and disconnects the circuit from the mains very quickly if this current is over 30 mA.

This new HiFi-Tuning Type F RCCB is Supreme3 quality, as a sound upgrade for your entire audio/video system through the use of large area, solid copper/silver contact materials, anti-magnetic stainless steel screws, in a fully cryogenised quality. It features very low impedance with minimal losses. Type F is designed for detection of normal AC, Pulsating DC with DC components and high frequency currents up to 1 kHz.

Audio/video enthusiasts sometimes tend to bypass their differential switch, this is, however, illegal and highly unsafe. Insurance companies will not pay if they notice this has been done. We strongly discourage doing so. The best thing is, you don’t need to anymore with the introduction of the HiFi-Tuning differential switch.

A replacement from your standard RCCB to this audio/grade version can be done in a few minutes by a qualified technician.