Axton A544DSP

The A544DSP from Axton is a versatile 4-channel DSP amplifier. With its 10 channels configurable via app, it offers numerous options for customizing your sound system. Optical and coaxial inputs enable the connection of High-Res Audio interfaces, while the integrated Class A/B amplifier delivers 4 output channels with 4 x 25 W RMS. With features such as Bluetooth audio streaming, Plug'N'Play installation and Auto-Turn-On, the A544DSP remains flexible and user-friendly. Numerous DSP features such as parametric equalizers, crossovers and time alignment 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 A544DSP DSP amplifier is not only super powerful in terms of features, but also in terms of price. An incredible 10 channels can be configured with the new A544DSP via app. If even more DSP channels are required, the audio signal can be transmitted loss-free via the optical output to another AXTON DSP amplifier with an optical input, giving you up to 20 DSP channels. With this concept, it is theoretically even possible to create an INFINITE number of DSP channels. Naturally, each DSP channel is equipped with a parametric 15-band EQ, crossovers up to 24 dB/oct., delay correction and phase correction. The revised crossover now offers three filter characteristics: Butterworth, Linkwitz and Bessel. The new 9-band INPUT EQ ensures that all signal sources have an identical frequency response. The newly integrated channel routing significantly simplifies the assignment of channels. What was previously done via cable adapters at the input is now done with just a few moves in the AXTON DSP app. The integrated Class A/B amplifier powers 4 output channels with 4 x 25 W RMS. This is enough power for a noticeable boost of the standard loudspeakers and a sonorous drive for tweeters in 2-way or 3-way concepts. The other 6 pre-outs can be conveniently routed to an Axton A601, resulting in a powerful amplifier combination with 4 x 25 W RMS + 6 x 100 W RMS, which can be used in the multi-channel systems of many car manufacturers. The plug & play connection cable is also inexpensive - the Axton range includes over 30 car brands. The ABT50 interface enables the playback of 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 preamplifier outputs (5 volts) including remote output for controlling additional amplifiers
  
• Optical and coaxial input for the ABT50 high-res audio interface 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
  
• Delay correction adjustable per channel (0 - 550 cm / 0 - 15.8 ms)
  
• Memory locations for your own settings: 5 on the amplifier, unlimited on the smartphone
  
• Dynamic Bass function for powerful performance without a subwoofer
  
• Noise gate function to reduce the background 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%
    
  • Attenuation factor: >= 200
    
  • No-load 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