Match UP 4DSP Universal Amp Upgrade 4 Channel Amplifier & 64 Bit 5 Channel DSP

The Match UP 4DSP is a compact 4-channel Class GD upgrade amplifier with an integrated 5-channel 64-bit DSP, part of the Match UP universal amp upgrade range. It is designed to improve the sound of vehicles running simple 2- or 4-channel factory radios.

This listing is the UP 4DSP. The Match UP range is also available as the UP 8DSP MK2 with 8-channel amplification and 8-channel DSP.

Key specifications

• Amplifier: 4-channel Class GD
• DSP: 5-channel, 64-bit
• Power (channels A-B): 2 x 60W RMS @ 4 ohms
• Power (channels C-D): 2 x 85W RMS @ 4 ohms / 2 x 140W RMS @ 2 ohms
• Inputs: 4 x high-level speaker input (ADEP.3), 1 x optical SPDIF (12–96kHz)
• Outputs: 4 x speaker, 1 x mono RCA line out, remote out
• Operating voltage: 10.5–18V, start-stop capable
• Dimensions (H x W x D): 46 x 130 x 110mm
• Fuse: 1 x 30A LP-Mini-fuse

MATCH UP 4DSP

4-channel Class GD upgrade amplifier with integrated 5-channel 64-bit DSP for universal applications

The UP 4DSP expands the Match UP lineup with a 4-channel amplifier and integrated 5-channel DSP. It is the ideal solution for vehicles with simple 2- or 4-channel factory radios where a clear improvement in sound quality is wanted, without the complexity of a larger multi-channel system. Optional plug-and-play harnesses and the smart 4-channel high-level input with ADEP.3 allow clean integration into modern OEM architectures. Its compact dimensions and high efficiency make it well suited to daily drivers, lease vehicles and tight installs.

• Ultra-efficient 4-channel amplifier with 1-channel line output and 5-channel DSP
• Ideal for upgrading standard sound systems with up to 4 channels
• Optional cable harnesses for straightforward integration into factory sound systems
• Extremely powerful 64-bit "fixed point" audio DSP
• ACO (Advanced 32-bit CoProcessor) platform with extended feature set:
  • ISA (Input Signal Analyzer) and InputEQ for analysis and compensation of input signals
  • DLC (Dynamic Loudness Control) and RTC (Remote Tone Control) for volume-dependent dynamic adjustment of highs and lows
  • Proprietary TuneEQ function for automated adjustment of input, virtual and output equalisers
  • SFX (DSP Sound Effects): Augmented Bass Processing, RealCenter & Co.
• Smart 4-channel high-level input with ADEP.3 circuit
• 1:1 IOR (Input-to-Output Routing): same number of high-level inputs and amplifier outputs
• VCP (Virtual Channel Processing) for flexible configuration in complex sound systems
• Optical input in SPDIF format, sampling rate 12–96kHz
• Mono RCA output for connecting an external amplifier such as a subwoofer amplifier
• SCP (Smart Control Port) for optional accessories including DIRECTOR, CONDUCTOR & Co.
• Auto Remote switch
• Start-stop capable power supply with extended input voltage range up to 18V — compatible with modern hybrid and electric vehicles
• Compact design with low heat dissipation thanks to high efficiency

Compact Class GD power and integrated DSP for flexible OEM upgrades

The two main channels deliver 2 x 60W RMS @ 4Ω for a front speaker system. Two additional channels supply 2 x 85W RMS @ 4Ω or 2 x 140W RMS @ 2Ω for compact bass upgrades. The mono RCA output allows connection of an external amplifier, and the optical SPDIF input enables integration of digital sources or aftermarket head units. The start-stop-ready power supply with an operating range up to 18V ensures compatibility with modern vehicle platforms.

Compact design for flexible installation options

The UP 4DSP's small footprint — 46 x 130 x 110mm — allows installation in confined spaces where larger amplifiers will not fit.

Augmented Bass Processing

Audiotec Fischer's proprietary Augmented Bass Processing combines two features — Dynamic Bass Enhancement and SubXpander — developed specifically to improve bass reproduction from subwoofers.