Description
MGaudio SD120/240/380/500 Amplifier Series – High-Efficiency Class D Power Amplifiers
The MGaudio SD Series amplifiers, including the SD120, SD240, SD380, and SD500, represent cutting-edge Class D amplification technology. These mono amplifiers offer exceptional efficiency (about 90%) with minimal distortion, making them ideal for both professional and audiophile applications. With output power ranging from 120W to 500W RMS at 1kHz, these amplifiers deliver clean, powerful audio performance, while the 2-ohm output impedance ensures compatibility with various speaker configurations.
Key Specifications:
- Output Stage: Class D amplifier, known for high efficiency (~90%) with minimal nonlinear distortion.
- Input Impedance: 50k, ensuring seamless integration with various audio sources.
- Input Voltage: 1.2V, suitable for high-quality audio equipment.
- Inputs:
- SD120/240/380/500: Unbalanced AUX input with optional HPF (High-Pass Filter) for added sound flexibility.
- Output Impedance: 2 ohms, providing versatility and compatibility with a wide range of speakers.
- RMS Power:
- SD120: 120W RMS
- SD240: 240W RMS
- SD380: 380W RMS
- SD500: 500W RMS
- All at 1kHz with 10% NIR (Non-Linear Distortion).
- DIN Power (DIN 45500):
- SD120: 80W
- SD240: 160W
- SD380: 250W
- SD500: 330W
- All at 1kHz with 1% NIR.
- Frequency Range: 20Hz to 20kHz with AFC irregularity of ±0.1dB, ensuring flat and accurate response across the audible range.
- Harmonic Distortion: Extremely low at 0.001% THD (1W), from 20Hz to 20kHz, for ultra-clear sound reproduction.
- Signal-to-Noise Ratio: Outstanding 120dB, ensuring a crisp, noise-free listening experience.
- Damping Factor: An impressive 200, providing excellent control over speaker movement and dynamic performance.
- Power Supply: 220-240V, 50Hz, with a maximum power consumption of 170W (SD120), 290W (SD240), 430W (SD380), and 550W (SD500).
- Weight:
- SD120/240/380: 2kg each.
- SD500: 3kg.
- Dimensions: 5cm (W) x 16cm (D) x 25cm (H), compact and efficient design for easy integration into any audio setup.
The MGaudio SD Series amplifiers are perfect for users who need reliable, high-powered, and efficient mono amplifiers with precise audio reproduction.
MGaudio SD120/240/380/500-D Amplifier Series – Class D Amplifiers with Digital Input and Bluetooth Connectivity
The MGaudio SD Series-D amplifiers offer the same high-efficiency Class D amplification technology as the standard models, but with added digital input options and Bluetooth 5.0 connectivity. This makes them ideal for modern audio setups where both analog and wireless inputs are required. The SD120-D, SD240-D, SD380-D, and SD500-D models deliver 120W to 500W RMS of power, with the same impressive specifications and performance, but with the convenience of digital volume control and digital EQ adjustments (100Hz and 10kHz).
Key Specifications:
- Output Stage: Class D, with efficient power delivery and minimal distortion.
- Input Impedance: 50k, allowing integration with a wide variety of audio sources.
- Input Voltage: 1.2V, ideal for professional-level signal processing.
- Inputs:
- SD120/240/380/500-D: Unbalanced AUX and Bluetooth 5.0 for wireless audio streaming.
- Digital EQ Control: Adjustable at 100Hz and 10kHz for personalized sound tailoring.
- Digital Volume Control: For precise audio level management.
- Output Impedance: 2 ohms, providing flexibility in speaker configurations.
- RMS Power:
- SD120-D: 120W RMS
- SD240-D: 240W RMS
- SD380-D: 380W RMS
- SD500-D: 500W RMS
- All at 1kHz, with 10% NIR.
- DIN Power (DIN 45500):
- SD120-D: 80W
- SD240-D: 160W
- SD380-D: 250W
- SD500-D: 330W
- All at 1kHz, with 1% NIR.
- Frequency Range: 20Hz to 20kHz with ±0.1dB AFC irregularity, offering accurate and faithful sound reproduction.
- Harmonic Distortion: 0.001% THD (1W), from 20Hz to 20kHz, ensuring crystal-clear audio.
- Signal-to-Noise Ratio: Excellent 120dB, ensuring transparent audio with minimal noise interference.
- Damping Factor: 200, delivering exceptional control over speaker dynamics.
- Power Supply: 220-240V, 50Hz, with maximum power consumption of 170W (SD120-D), 290W (SD240-D), 430W (SD380-D), and 550W (SD500-D).
- Weight:
- SD120-D, SD240-D, SD380-D: 2kg each.
- SD500-D: 3kg.
- Dimensions: 5cm (W) x 16cm (D) x 25cm (H), compact design for convenient installation.
The MGaudio SD-D Series offers the best of both worlds: high-efficiency Class D amplification, combined with digital features like Bluetooth 5.0 and digital EQ control, making these amplifiers ideal for audiophiles and professionals looking for versatility and top-tier performance in modern audio systems.





