Anti-Mode X4 Images

Optimize your stereo system with Anti-Mode X4

Speaker-room interaction is typically the most important performance-limiting factor of any high-end audio system. Every listening space introduces errors that can be in the magnitude of dozen decibels or even more. These errors are most pronounced at the bass and lower midrange regions, where the classic acoustic treatment loses its effectiveness.

Anti-Mode X4 is DSPeaker's newest loudspeaker and subwoofer optimization system capable of perfecting the acoustic performance of any full-range stereo audio system. It is based on our new Anti-Mode 3 algorithm which refines the popular Anti-Mode algorithm even further.

Anti-Mode X4 can be connected to almost every audio system.


  • 2 x Stereo RCA inputs, Stereo XLR input
  • 2 independent analog outputs, both XLR and  RCA
  • 3x Coaxial and 3x Toslink S/PDIF digital inputs
  • Coaxial and Toslink S/PDIF digital outputs
  • USB Audio
  • Headphone output and Microphone input

Technical Specifications

Digital Specifications

DSP Cores:

DSP Firmware:

Analog specifications (typical)



User's Manual

Owner's manual is available here: antimodex4en.pdf (in English).

USB Audio 2.0 Driver for Windows

Currently Windows does not come with an USB Audio 2.0 driver that would work with DSPeaker Anti-Mode X4. With the driver you get data rates high enough for DSD over PCM (D64 and D128) and higher than 96kHz samplerates, or you can use "Legacy USB", see below.



If you are not using Windows and your PC does not work with Anti-Mode X4, setting Anti-Mode X4 to "Legacy USB" mode (from the Input menu) allows you to use Anti-Mode X4 as USB Audio 1.0 device with a sample rate up to 96kHz.

Firmware Fix to level adjustment noise being left on when measurement started. Legacy USB should now work with Mac. 192k/176.4k from spdif should work (at least Coaxial, Optical needs a good cable and precise locking). Samplerate/DSD display issue fixed. LFE channel routing and measurement in 2.1 mode fixed. Improvements to Coax and Toslink outputs. Analog output level was lower than intended for SPDIF and USB inputs. - Coming soon: Improved input switching. A dummy ADC channel to allow USB Audio 2.0 with Mac.