OSD Audio SMP300 Mono Subwoofer Amplifier - 300W

Enhance your home audio experience with the OSD Audio SMP300, a powerful 500W mono-channel Class D subwoofer amplifier engineered to deliver deep, clean bass with outstanding efficiency.

Perfect for home cinema systems, custom installations, or high-end two-channel audio setups, this compact yet robust amplifier is tailored for audiophiles who want to power a passive subwoofer with precision and control.

With its rack-mountable design and advanced signal sensing, the SMP300 integrates seamlessly into AV systems.

Whether you're upgrading a home theatre or adding low-frequency impact to a multi-room setup, this amplifier offers versatile performance with intuitive controls and flexible inputs.

FEATURES

• High Power Output: Delivers up to 500W peak and 300W RMS, driving even large passive subwoofers for room-filling bass.
• Class D Efficiency: Class D digital amplification ensures cooler operation and reduced power consumption without compromising on performance.
• Variable Crossover & Phase Control: Fine-tune your bass response to suit your room acoustics and speaker setup with adjustable crossover and 0–180° phase switch.
• Multiple Input Options: Includes both line-level and speaker-level inputs, making it compatible with a wide range of audio systems.
• Auto-On Signal Sensing: Automatically powers on when a signal is detected and shuts off after inactivity, improving energy efficiency and convenience.
• Rack-Mountable Design: Fits neatly into standard AV racks with removable side brackets, perfect for professional or custom home installations.
• Subwoofer EQ Switch: Enhances low-end performance with a tailored EQ setting for even deeper bass output.
• Heavy-Duty Build Quality: Solid construction with reliable components ensures long-term durability and consistent performance.
• Quiet Fan Cooling: Internal fan keeps the amp cool under load while maintaining quiet operation.
• Protection Circuitry: Built-in safeguards protect against short circuits, overheating, and overloading, giving you peace of mind.

What You Get

• 1 x SMP300 Amplifier
• 1 x Power Cable

Specifications

• Amplifier Type: Subwoofer
• Amplifier Class: Digital Class D
• Channels: 1
• Power Output: 500 Watts @ 4 Ohm
• Power Handling: 8 Ohm RMS Rating (Watts): 150 Watts
• Power Handling: 4 Ohm RMS Rating (Watts): 250 Watts
• Frequency Response: 20Hz-160Hz +/-1dB THD: 1%
• Variable Crossover: 35Hz-180Hz
• Variable Phase Switch: 0 To 180 Degrees
• Impedance: 8 Ohm And 4 Ohm Stable
• Signal To Noise Ratio: 95 dB
• 12V Trigger Mode
• Inputs: Speaker (High) Level / Signal (Low) Level RCA
• Rack Mountable: 1U Rack Space Style / Mounts Included
• Dimensions (L x H x D): 413mm x 76mm x 235mm
• Weight: 3.2kg
• Warranty: 2 Years