The coming years at ESX will be all about sophisticated sound tuning. Dominic Langenberg, one of the most innovative and competent sound engineers brought the new ESX DSP generation to series production with great enthusiasm. The prelude to the new DSP (r)evolution from ESX are the two digital sound processors from the DIRECTION series.

The finest selected components, optimally tuned and combined into an ingenious overall concept, perfectly adjustable down to the smallest details with the newly developed PC software, make sound enthusiasts click their tongues respectfully. With the optional Bluetooth 5.0 upgrade set BT-D, the app version of the ESX DSP Toolkit can also be used live and in real time from the smartphone - including HD audio streaming. 

Thanks to the latest state-of-the-art analog/digital converter from AKM Velvet Sound™, the sound processing of the Analog Devices™ 32 bit/295 MHz DSP chips takes place in the full HD audio range at 96 kHz. In addition to audiophile aspects, a smooth integration into modern vehicles was also considered. EPS PRO protective circuit and high-level inputs with auto turn-on (pluggable from 1-15 V or 15-40 V via jumper) as well as symmetrical RCA low-level outputs with 6 V/RMS are standard on board. 


DSP Software


  • DSP Chip from Analog Devices™ 32 Bit, 294 MHz, Full HD Audio 96 kHz
  • Signal Converter from AKM Velvet Sound™ A/D 32 bit, D/A 32 bit
  • HP/LP/BP @ 6-48 dB, Phase Shift, Time Correction 0 ~ 20 ms/0.01 ms steps
  • Up to 248 output EQs, 120 input EQs (PEQ/HSLF/LSLF) +/- 12 dB, 0.5 dB steps)
  • Input Mixer, Subwoofer Controller, Preset Auto Switch, Priority Input Mode
  • Input Sensitivity: Low Level 1 ~ 6 V/RMS, High Level 1 ~ 15 or 15 ~ 45 V/RMS
  • Signal-to-noise Ratio (A-weighted): Analog Input 106 dB, Digital Input 111 dB
  • Optical S/PDIF Input
  • Total Harmonic Distortion: Analog Input <0.0015%, Digital Input <0.0009%
  • D68SP+ model comes standard with built-in Bluetooth adapter



  • 6 x RCA Input, balanced
  • 6 x High Level Input (via Molex Connector)
  • 1 x Optical stereo, S/PDIF 192 kHz, 24 bit
  • 1 x USB Type B for PC Software
  • 1 x RJ45 for Remote Controller / Extension Cable
  • 1 x Power Input incl. REM OUT and MODE switch pin



  • 8 x RCA @ 6 V RMS



  • 105 x 40 x 185 mm


This item can be back-ordered.

ESX Audio D68SP+ DSP