With the Digital Sound Processor QL812SP, ESX shows what a real high-end DSP can do. All components used are finest quality: not only audiophile 32-bit converters from AKM’s 5-series are installed, but also two ADAU1452 and thus the best processors from Analog Devices. This is exactly where the wheat is separated from the chaff – common DSPs usually only have one DSP core. However, if a DSP has many channels and the corresponding equipment, computing power becomes scarce. Not so with the new ESX top models, on the contrary. The two QL-DSPs have enough reserve to easily process not only 12 channels – the developers also implemented the revolutionary ESX Expert Staging Equalizer with balance and level function, which enables further refinements in fine tuning, in addition to numerous functions.
A powerful ARM Cortex® M4 High Performance CPU with 240 MHz and internal 1024 kB flash memory takes care of command processing. This is the only way to work in real time with maximum performance. With the new QL812SP, ESX is now also strengthening its high standards in the area of high-end DSPs: In the test review in the specialist magazine Car & Hifi 3/2022, the QL812SP thrilled the test editors so they not only classified it as a highlight, but also immediately as the best DSP “below 2000 Euros”. This is outstanding as it is available for 1000 euros.