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Matrix Audio MA-1 power amplifier

The all-new M series marks a milestone for Matrix Audio as it advances towards traditional Hi-Fi systems. This series includes the music streamer MS-1, the preamplifier MP-1 and the power amplifier MA-1, forming a complete flagship system of Matrix Audio that presents our understanding of Hi-Fi audio. The M series is the first lineup to adopt the new Matrix Design language, serving as a precursor to the future evolution of Matrix Audio products.

Matrix design philosophy

Evaluating audio products from the dimensions of “listening” and “looking” has always been our consistent philosophy. From concept to design, every step contains the love for music and the pursuit of beauty. The industrial design showcases our concept of simplicity. With hundreds of circular perforations of varying sizes and depths arranged in an array on the simple hexahedron, resembling rhythmic beats dancing and emerging on the surface.

Designed to complement the system

The power amplifier serves as the backbone of the entire audio system, requiring comprehensive performance that excels both in dynamic and nuanced scenarios. It should surge powerfully during intense moments and delicately reveal subtleties with finesse. The MA-1 is born for the MS-1 and MP-1, offering precise matching and tuning to ensure that the entire system delivers exceptional audio performance and operational integration.

Multi-triode in parallel push-pull output

In order to reduce the output impedance, we applied 10 ONSEMI high-power transistors in each channel to compose a push-pull amplification circuitry, operating at a high bias current state. The static power consumption is up to 300W. At an 8-ohm load, it provides 250W output power per channel, and 450W output power per channel at a 4-ohm load. Lower output impedance supports improved speaker control, especially during demanding passages.

Stereo mode

Each amplification unit in one amplifier handles left and right channels separately. Every note is precisely reproduced on the stereo stage, maintaining channel separation and clarity.

Bridged mode

Joining two power amplifiers together unleashes more powerful energy for music. Even speakers with demanding power requirements or low sensitivity can be driven with authority in bridged configuration.

Mono mode

Two amplifiers work for each channel, pursuing more extreme sound quality. It provides an advanced driving mode for high-end separate speakers or bi-wiring speakers, unlocking the potential performance of the speakers.

Adjustable gain

The amplifier has two gain levels. The normal gain is +30dB, which can be attenuated to +24dB. Allowing you to pair the amplifier with different pre-amplifiers and speakers while maintaining appropriate signal levels and low noise.

Surging power supply design

Independent transformers for the left and right channels enable a fully independent dual-channel design, with a total power supply of 1250VA. The main power is ±80V. Each channel features 14 parallel-connected 6,800µF capacitors, forming the main power supply filtering capacitor matrix. The total capacity of capacitors for both channels reaches 190,000µF. Compared to a single capacitor with the same capacity, multiple capacitors in parallel feature lower equivalent internal resistance, ensuring greater flexibility in handling large current outputs.

H-shaped structural craftsmanship

The H-shaped structure is a unique design created by Matrix Audio for the M series products, born from two years of continuous optimization and improvement considering various aspects such as mechanical relationships, circuit layout, and exterior appearance. The 20mm CNC aluminum plate becomes the support structure of the entire device after dozens of procedures, serving as the core of the H-shaped structure. All components are mounted on the aluminum plate, and the entire weight is supported by heavy-duty feet installed on the main beam, making it solid and stable. After the panels are installed, multiple isolated cavities are formed with the main beam. Different circuit modules are properly placed in each cavity, effectively reducing interference between circuit modules. The circuit modules for the left and right channels are symmetrically arranged on both sides, creating a balanced visual impression.

Silent cooling system

The MCU continuously samples the temperature with two sensors on the main heatsink, constantly monitoring the temperature. When the temperature exceeds the preset value, a 7.4 inch ultra-quiet fan runs automatically and adjusts the fan speed dynamically. You will hardly notice the fan is working even when the device is at low volume or muted. The isolated duct design ensures that there are no electronic components inside the airflow path, preventing dust accumulation from long-term operation.

Elegant and refined design language

The industrial design expresses the Matrix Design language through dots, lines and surfaces. Each component undergoes multiple delicate CNC machining and surface treatments, providing a matte texture and precise tactile feedback in operation, displaying a composed and refined presence within your listening space.

From ears to heartfelt

The MA-1 delivers a rich and detailed sound presentation. Every note and chord is conveyed with control and weight. Every detail of the M series embodies continuous trial, meticulous polishing, and careful calibration by the Matrix Audio team. Everything you hear, see and touch reflects deliberate engineering decisions.

Product highlights

• 250Wrms ×2 @8Ω in Stereo/Mono mode
  
• 450Wrms ×2 @4Ω in Stereo/Mono mode
  
• 500Wrms ×1 @8Ω in Bridged mode
  
• 900Wrms ×1 @4Ω in Bridged mode (measured under music signal)
  
• THD+N <0.02% @250W 8Ω in Stereo/Mono mode
  
• SNR -122dB @+24dB A-weighting
  
• Independent dual-mono transformers — 1250VA total
  
• 190,000µF total filtering capacitance
  
• Adjustable gain +24dB / +30dB
  
• Trigger in and trigger out support

Specs

• XLR input impedance: 40kΩ
  
• RCA input impedance: 20kΩ
  
• Input sensitivity: 1.48Vrms @Stereo/Mono mode — 1Vrms @Bridge mode
  
• Frequency response: 20–20kHz (+0, -0.15dB) — 142kHz @-3dB
  
• Crosstalk: -120dB
  
• Load impedance: Stereo/Mono 2–16Ω — Bridged 4–16Ω
  
• Trigger in: DC 6–12V <10mA
  
• Trigger out: DC 12V / 50mA MAX
  
• Power voltage: AC 100–120V 50/60Hz or AC 220–240V 50/60Hz factory fixed
  
• Standby power consumption: <1W
  
• Idle power consumption: 250–350W
  
• Maximum power consumption: <1250W
  
• Weight: 93.5 pounds (42.4kg)
  
• Width: 16.93 inches (430 mm)
  
• Depth: 20.39 inches (518 mm)
  
• Height: 7.91 inches (201 mm)

What’s included

• Matrix Audio MA-1 power amplifier
  
• Power cable
  
• User documentation