Most of our audio devices share the home AC line with other electrical appliances such as refrigerators, washing machines, air conditioner and LED lights. The home appliances emit electrical noise through the AC line. It is not a problem for entry-level mass market consumer audio system, but in a high-end system where we are optimizing SNR > 90db and less than 0.1% THD+N, this is an area that we should pay attention. The Pure AC-4E improves your audio system sound stage and resolution. You can hear more details and harmonics in your music.
High-End Implementation Above Other Similar Devices
Most of the entry level power conditioner devices don’t do a good job of isolating the noise, and also compress the energy provided by the AC power supply. This is due to the physical characteristics of simple filter design and resulted in the loss of bass isolation and dynamics. High-end devices with a sophisticated design that can achieve excellent noise filtering without the side effects cost much more than the price of Pure AC-4E. Furthermore, high power amplifiers and small signal devices require different AC filter designs and entry-level AC filter devices are not optimized for either one of them.
There are two sets of filters inside Pure AC-4E cater to the range of target applications:
1) An extremely powerful 5th-order LC filter circuit (using 7 high-power inductors, capacitors) with maximum 1000 times isolation performance is explicitly designed for small signal devices such as preamp, DAC, and players that are very susceptible to noise interference. Compared to the discontinued Pure AC-4, this upgraded design now also supports high-power devices, expanding protection beyond low-power electronics to larger power loads as well.
2) High power amplifiers using two output sockets, each with a current range of 10A to 15A. A 5th-order LC filter with 10 to 50 times isolation is designed to supply a maximum current of 27A. The inductor is wounded with 1.6mm thick copper wire to allow for high current flow.
Pure AC-4 outperforms all other power conditioners in its price range.
