The A544DSP from Axton is a versatile 4-channel DSP amplifier. With its 10 app-configurable channels, it offers numerous possibilities for customizing your sound system. Optical and coaxial inputs allow connection to high-res audio interfaces, while the integrated Class-A/B amplifier delivers 4 output channels with 4 x 25 W RMS. Features like Bluetooth audio streaming, Plug’N’Play installation, and auto-turn-on keep the A544DSP flexible and user-friendly. Numerous DSP features such as parametric equalizers, crossovers, and time correction complete the profile of this powerful amplifier.

Alfa Romeo, Audi, BMW, Citroen, Chevrolet, Chrysler, Dacia, Dodge, Fiat, Ford, GT86, Honda, Hyundai, Jaguar, Jeep, Kia, Lancia, Land Rover, Lexus, Mazda, Mercedes, Mitsubishi, Nissan, Opel, Porsche, Peugeot, Renault, Seat, Skoda, Smart, Subaru, Toyota, Volkswagen, Volvo

All about the A544DSP DSP Amplifier

The new AXTON DSP amplifier A544DSP is not only super strong in features but also in price. An incredible 10 channels can be configured with the new A544DSP via app. If more DSP channels are needed, the audio signal can be transmitted losslessly via the optical output to another AXTON DSP amplifier with an optical input, resulting in up to 20 DSP channels. With this concept, it is theoretically possible to create INFINITE DSP channels. Of course, each DSP channel is equipped with a parametric 15-band EQ, crossovers up to 24 dB/Oct., time correction, and phase correction. The revised crossover now offers three filter characteristics: Butterworth, Linkwitz, and Bessel. With the new 9-band INPUT EQ, it can be ensured that all signal sources have an identical frequency response. The newly integrated channel routing significantly simplifies channel assignment. What was previously solved with cable adapters at the input is now done with a few moves in the AXTON DSP app. The integrated Class A/B amplifier powers 4 output channels with 4 x 25 W RMS. That's enough power for a noticeable boost of the factory speakers and a sonorous drive for tweeters in 2-way or 3-way concepts. The other 6 preouts can be conveniently forwarded to an Axton A601, resulting in a powerful amplifier combination with 4 x 25 W RMS + 6 x 100 W RMS, applicable to the multi-channel systems of many car manufacturers. The Plug & Play connection cable is also affordable - the Axton range includes over 30 car brands. The ABT50 interface enables playing Hi-Res audio or music in studio master quality via the A544DSP.

Highlights

• 4-channel Smart Class-A/B amplifier with iOS or Android app-controlled audio DSP functions
  
• 10-channel DSP with 6 processed preamp outputs (5 volts) including remote output for controlling additional amplifiers
  
• Optical and coaxial input for the High-Res Audio Interface ABT50 or another Axton DSP
  
• Optical output for linking the signal to another Axton DSP amplifier
  
• Bluetooth audio streaming with automatic source switching
  
• Plug’N’Play installation with optional vehicle-specific connection cables
  
• Auto-turn-on function via high-level input
  

DSP Features

• Freely adjustable active crossover: high/low/band/bypass with 6/12/18/24 dB/Oct. slope per channel (Butterworth, Bessel, or Linkwitz-Riley)
  
• Freely adjustable 15-band parametric equalizer per channel
  
• Freely adjustable 9-band parametric equalizer per input source
  
• Gain, phase switch, and mute function per channel
  
• Time correction adjustable per channel (0 – 550 cm / 0 – 15.8 ms)
  
• Memory slots for custom settings: 5 on the amplifier, unlimited on the smartphone
  
• Dynamic bass function for powerful performance without a subwoofer
  
• Noise gate function to reduce the basic noise of the radio
  

Specifications

• DSP
  
  • DSP type: AKM7735 Dual DSP
    
  • ADC: 2x 24-bit
    
  • DAC: 2x 32-bit
    
  • DSP MHz: 2x 150 MHz
    
  • Audio sampling frequency: 192 kHz 
• Bluetooth
  
  • Bluetooth class: 2
    
  • Bluetooth power: 1 mW / 0 dBm
    
  • Bluetooth range: 10 m
    
  • Bluetooth frequency: 2.4 – 2.48 GHz
    
• Amplifier
  
  • Music output power 4/2 Ohm: 30 W x 4
    
  • RMS output power 4/2 Ohm: 25 W x 4
    
  • Playback range: 20Hz ~ 48 kHz
    
  • High-level sensitivity: 4.2 Vrms
    
  • High-level sensitivity: 39 Ohm
    
  • RCA max voltage: 5 Vrms
    
  • Operating voltage: 7.5 V – 16.5 V
    
  • Signal-to-noise ratio digital input: > 112 dB
    
  • Signal-to-noise ratio analog input: > 106 dB
    
  • THD: 1 KHz < 0.02%
    
  • Dumping factor: >= 200
    
  • Idle current consumption: 0.23 A
    
  • Maximum current consumption: 20 A
    
  • Max. remote output current: 0.3 A
    
  • Dimensions (L x W x H) 177 x 40 x 114 mm