DSPeaker Anti-mode X4 flagship pre-amp

#Anti-Mode™ X4 combines an uncompromising selection of audio components with more than a decade of expertise in audio reproduction and signal processing. It has been designed with a single purpose in mind: to make your speakers really shine - in your home, in your unique acoustic environment.

Automatic calibration process improves the clarity and detail of your stereo speakers. Connect one or two subwoofers for extended bass with seamless integration and no acoustic problems.

The interaction between speaker and room is the main performance-limiting factor for any high-end audio system. Each listening room introduces errors that can be on the order of a dozen decibels or even more. These errors are most pronounced in the bass and lower midrange, where the classical acoustic treatment is limited.

FEATURES

• Versatile connectivity, connect up to 10 digital and analog audio sources.
  
• Support for up to 4 subwoofers (in "0.4" configuration)
  
• Built-in headphone amplifier, including optional DSPuralization
  
• Patented automatic THD-optimizing digital crossover
  
• Plug and play: no expert knowledge required for calibration and use

The idea of the industry-leading Anti-Mode automated room calibration is simple: to make the speakers and subwoofers work with the room, instead of clashing with it. The benefits of the Anti-Mode correction include significantly improved clarity, tighter and deeper bass response, no unwanted "boominess" and a seamless integration of the main speakers and subwoofers.

The installation procedure is automated; anyone can achieve great results without any prior knowledge. After a short calibration process, Anti-Mode™ knows your listening space in detail and designs customized filters set up for your unique space. You may be very surprised to hear what your speakers are really capable of!

Anti-Mode X4 covers a wide range of usage scenarios, from the traditional "2.0" configuration with two speakers to more exotic installations with a number of subwoofers and optimizations for multiple listening locations. The best crossover frequency is automatically determined for speakers and subwoofers.

In addition to the automatic correction, the user has full control over extensive tone controls and custom filters. The desired sound signature can even be changed in real time, conveniently from the listening position. Various settings can be stored in memory for quick recall at any time. Most functions can be accessed with the included aluminum remote control or by using the control wheel on the front panel.

There is a modern, easy-to-use graphical user interface. Room response diagrams can be inspected in detail without the need for personal computers or other additional equipment. A built-in graphic design tool is included for all types of audio enhancements.

Three advanced stereo DACs (digital-to-analog converters) drive the primary, auxiliary and headphone outputs. Combined with output range control and selection of the best converters using an IC tester, the XLR outputs achieve 126 dB of dynamic range and less than 0.0008% total harmonic distortion. Both the primary and outputs are active simultaneously for speakers and subwoofer, and are available in both XLR and RCA versions. The signal from the primary output is also provided as optical and coaxial SPDIF.

The headphone output is available for nighttime listening and when you don't want to disturb your household or neighbors. The headphone mode features a proprietary auralization technology that can make many recordings sound more natural and reduce listening fatigue.

Connections:

Two analog RCA inputs and a pair of XLR inputs provide low SNR+THD of -104 dB. Whichever audio source you connect, you can select the input's control range for full performance. A total of six SPDIF inputs and the USB Audio 2.0 input support up to 192 kHz and DSD64/DSD128 (on USB).

Power consumption in standby mode is just 0.5W, saving both money and the environment.

Technical specifications:

DSP cores

• 1 x VS1205 (GUI & Firmware update via USB)
• 6 x VS1205 (audio inputs, processing)
• 3 x high quality DACs (default), 3 x high quality ADCs

Main points in the firmware

• Anti-Mode 3.0 algorithm for room calibration
• Automatic optimization of the cross-over frequency (US Pat. 9,955,261)
• Extensive tone controls and user-defined parametric equalizers
• Anti-Mode 3.0 Multi-Rate (FIR & IIR)
• sound curve, linear phase slope, parametric equalizers
• Adjustable infrasonic
• Adjustable cross-over

Interfaces

• 2x stereo RCA, 1x stereo XLR input
• 3x optical and 3x coaxial inputs (up to stereo 192 kHz with coaxial)
• USB Audio 2.0 input (192 kHz PCM, DSD64 and DSD128 with DSD over PCM)
• Primary output: stereo RCA, stereo XLR, optical Toslink and coaxial S/PDIF
• Auxiliary outputs: stereo RCA and stereo XLR
• Microphone input, headphone output
• One-button control wheel, IR remote control

Analog specifications

• Primary XLR: Dynamic range: 126 dB, Total harmonic distortion: < 0.0008%.
• Analog input, XLR, SNR+THD: -104dB
• Frequency range: 5...45000Hz (20...20000Hz ±0,1dB)
• Input voltage max RCA: 2,5 / 4,4 / 6,2 Vrms, XLR: 2,6 / 5,2 / 12,4 Vrms.
• Output voltage max RCA: 3.2 / 6.4 Vrms, XLR: 6.4 / 14.0 Vrms
• Power consumption: 25W, stand-by: < 0.5W

Mechanical characteristics

• Unit dimensions: 436mm x 70mm x 295mm
• Device weight: 4.5kg
• Color options: Black or silver faceplate
• Remote control, calibration microphone and microphone stand included