Match UP 4DSP – 4-channel Class GD upgrade amplifier with 5-channel DSP
The MATCH UP 4DSP (order no. M114000) is the compact 4-channel model of the MATCH UPGRADE DSP amplifier range. It combines a 4-channel Class GD amplifier with an integrated 5-channel 64-bit DSP and is designed to improve classic factory sound systems in vehicles with simple 2- or 4-channel head units – ideal for daily drivers, lease vehicles and installations where space is limited.
Two channels drive a front speaker pair and two channels are dedicated to subwoofers, while a mono RCA output can feed an external amplifier. The 4-channel ADEP.3 high-level input, optional Plug & Play harnesses, an optical SPDIF input, the proprietary 32-bit ACO platform and a start-stop-ready power supply accepting up to 18 V (suitable for hybrid and electric vehicles) make it easy to integrate. Configuration is done with DSP PC-Tool 6 including TuneEQ.
Key Features
- 4 amplifier channels, 5 DSP channels: plus a 1-channel line output; upgrades standard sound systems with up to four channels.
- Front channels: channels A–B: 2 × 60 W RMS at 4 Ω (min. 3 Ω).
- Subwoofer channels: channels C–D: 2 × 85 W RMS at 4 Ω or 2 × 140 W RMS at 2 Ω.
- Smart 4-channel high-level input with ADEP.3: for integration with modern factory head units.
- 1:1 Input-to-Output Routing: the number of high-level inputs equals the number of amplifier outputs.
- Class GD: dynamically controlled power supply for high efficiency and low heat output.
- ACO 32-bit coprocessor: Input Signal Analyzer and Input EQ, Dynamic Loudness Control, Remote Tone Control, TuneEQ for input, virtual and output EQ, and SFX effects.
- Virtual Channel Processing (VCP): for complex configurations.
- Optical SPDIF input: sampling rates from 12 to 96 kHz, for digital sources or aftermarket head units.
- Mono RCA output: for external amplifiers such as subwoofer amplifiers.
- Smart Control Port (SCP): for accessories such as DIRECTOR and CONDUCTOR.
- Start-stop capable, EV-suited: input voltage up to 18 V, auto remote switch, Power Save Mode; made in Germany.
Inputs & Outputs
- Inputs: 4 × high-level speaker input, 1 × optical SPDIF (12–96 kHz).
- High-level input sensitivity 2.8–11 V; input impedance 9–33 Ω with ADEP.3.
- Outputs: 4 × speaker output, 1 × RCA (line out), 1 × remote out; RCA output voltage 3 V RMS; max. remote output current 500 mA.
- USB-C port for configuration.
Power & Amplifier Section
- Channels A–B: 2 × 60 W RMS at 4 Ω (min. 3 Ω).
- Channels C–D (subwoofer): 2 × 85 W RMS at 4 Ω, 2 × 140 W RMS at 2 Ω.
- Class GD with dynamically controlled power supply; regulated power supply and stabilised maximum output power.
- Frequency response 15 Hz – 22 kHz; THD and THD+N 50.
- SNR: 102 dB digital input, 101 dB analogue input (A-weighted).
- Operating voltage 10.5–18 V (max. 5 s down to 6 V); power rating DC 12 V, 35 A max.; idle current 260 mA.
- Fusing: 1 × 30 A LP-Mini (APS); operating temperature −40 °C to +70 °C.
DSP & Sound Tuning
The 5-channel 64-bit fixed-point audio DSP runs at 295 MHz (1.2 billion MAC operations per second) with a 48 kHz sampling rate and BurrBrown A/D and D/A converters. Set-up is done with DSP PC-Tool 6.
- TuneEQ: automated frequency response correction – a single measurement per channel or channel pair with a measurement microphone (the page names the MTK1) is enough for the software to set the parametric EQ bands (centre frequency, Q and gain) towards a target curve.
- RealCenter: derives a centre signal only from the content common to the front left and right channels; its level follows the stereo content, so material present on only one side produces no centre output. Unlike common methods that simply sum the channels and lower the centre by about 6 dB.
- Augmented Bass Processing: Dynamic Bass Enhancement boosts the low frequencies and adjusts the subsonic filter according to the input signal for more bass at low and medium volume without overloading the subwoofer at high volume; the optional SubXpander adds subharmonics between 50 and 100 Hz.
- ACO functions: Input Signal Analyzer with Input EQ, Dynamic Loudness Control and Remote Tone Control.
- VCP and 1:1 IOR: virtual channel processing and direct input-to-output routing.
Installation & Connectivity Notes
- Compact dimensions of 46 × 130 × 110 mm (H × W × D) for space-limited installations.
- Optional Plug & Play cable harnesses for factory-system integration; the page lists the optional PP-UP 4DSP 3-Channel Out subwoofer connection cable.
- Auto remote switch; remote control ready via the Smart Control Port.
- SMD construction; Power Save Mode (PSM); made in Germany.
Technical Specifications
| Output power RMS | |
| – @ 4 Ohms | Channels A – B: 2 x 60 Watts (min. 3 Ohms) |
| – @ 2 Ohms | – |
| – @ 1 Ohm | – |
| – bridged @ 4 Ohms | – |
| – bridged @ 2 Ohms | – |
| – Subwoofer output @ 4 Ohms | Kanal C – D: 2 x 85 Watts |
| – Subwoofer output @ 2 Ohms | Kanal C – D: 2 x 140 Watts |
| Amplifier technology | Class GD |
| Inputs | 4 x Highlevel speaker input 1 x Optical SPDIF (12 – 96 kHz) |
| Input sensitivity | 2.8 – 11 Volts |
| Input impedance RCA / Cinch | – |
| Input impedance highlevel | 9 – 33 Ohms with ADEP.3 |
| Outputs | 4 x Speaker output 1 x RCA / Cinch 1 x Remote Out |
| Output voltage RCA / Cinch | 3 Volts RMS |
| Frequency response | 15 Hz – 22,000 Hz |
| DSP resolution | 64 Bit |
| DSP power | 295 MHz (1.2 billion MAC operations/second) |
| Sampling rate | 48 kHz |
| DSP type | Audio signal processor |
| Signal converters | A/D: BurrBrown D/A: BurrBrown |
| Signal-to-noise ratio digital input | 102 dB (A-weighted) |
| Signal-to-noise ratio analog input | 101 dB (A-weighted) |
| Distortion (THD @ 1 kHz, 1 W into 4 Ohms) | < 0.03 % |
| Distortion (THD+N @ 1 kHz, 1 W into 4 Ohms) | < 0.03 % |
| Damping factor | > 50 |
| Operating voltage | 10.5 – 18 Volts (max. 5 sec. down to 6 Volts) |
| Power rating | DC 12 V ⎓ 35 A max. |
| Idle current | 260 mA |
| Max. remote output current | 500 mA |
| Operating temperature range | -40° C to +70° C |
| Fuse | 1 x 30 A LP-Mini-fuse (APS) |
| Additional features | Class GD technology with dynamically controlled power supply, 32 Bit CoProcessor, ADEP.3 circuit, Start-Stop capability, Smart Control Port, USB-C, Auto Remote switch, Line Out |
| Dimensions (H x W x D) | 46 x 130 x 110 mm / 1.81 x 5.12 x 4.33″ |
Scope of Delivery
1 x MATCH UPGRADE amplifier UP 4DSP
2 x Connection cable
1 x Mounting plates & material
1 x USB cable
1 x Instruction manual
