300W Class D Mono Power Amplifier with XLR RCA Input

Power demanding speakers with a compact, high-performance Class D mono amplifier designed for detailed and controlled audio. With up to 300W output at 4Ω, PFFB technology and versatile XLR, RCA and TRS inputs, it is an excellent choice for HiFi systems, active subwoofer setups and dedicated audio applications.

Key Features

• 300W Class D Power: Delivers up to 300W at 4Ω for powerful, efficient speaker performance
• Mono Amplifier Design: One amplifier channel provides dedicated power for a single speaker channel
• PFFB Technology: Post-filter feedback helps reduce load-dependent distortion and maintain consistent frequency response
• TPA3255 Amplifier Chip: High-performance amplifier platform delivers strong output with excellent efficiency
• Low Distortion Audio: Achieves a rated THD+N of 0.002% for clean and detailed sound reproduction
• High Signal-to-Noise Ratio: SNR of ≥118dB helps preserve clarity across a wide range of listening levels
• Balanced & Unbalanced Inputs: XLR, RCA and TRS connections accommodate a variety of DACs, preamps, mixers and source devices
• Subwoofer Output: Dedicated active subwoofer output makes it easy to expand into a 2.1 audio system
• 80Hz High-Pass Filter: Helps separate low frequencies from the main speaker output when using a subwoofer
• Selectable Gain: RCA gain settings of 19dB or 25dB provide flexibility for different source output levels
• VU Meter: Integrated VU meter provides a visual indication of amplifier output levels
• 12V Trigger Support: Allows compatible equipment to coordinate amplifier power switching
• Efficient Cooling: Metal chassis helps dissipate heat during extended listening sessions
• Automatic Standby: Enters standby after approximately 20 minutes without an audio signal and resumes when playback is detected
• Soft-Start Protection: Helps minimise unwanted power-on and power-off noise to protect connected speakers

Specifications

• Product Type: Class D mono power amplifier
• Channels: 1
• Amplifier Chip: TPA3255
• Output Power: 300W @ 4Ω, 170W @ 8Ω, 620W @ 2Ω
• Rated Output Power: 200W @ 4Ω, 100W @ 8Ω, 400W @ 2Ω
• Speaker Impedance: 2–8Ω
• THD+N: 0.002%
• Signal-to-Noise Ratio: ≥118dB
• Frequency Response: 20Hz–20kHz (+0.4dB)
• Input Interfaces: RCA, XLR, TRS
• Output Interfaces: Passive speaker output, active subwoofer output
• Subwoofer Output Level: 2V
• Subwoofer Frequency: 20Hz–200Hz
• High-Pass Filter: 80Hz, 12dB slope
• RCA Gain: 19dB / 25dB
• XLR Gain: 20dB
• Input Sensitivity: 2.0V RCA / 4.0V XLR
• Power Supply: DC 32–48V
• Control Method: Push button
• Material: Metal
• Dimensions: 80 × 140 × 90mm
• Net Weight: 950g
• Recommended Applications: HiFi audio, home audio, studio setups and multi-channel systems

Package Contents

• 1 x Mono Class D Power Amplifier
• 1 x User Manual
• 1 x 48V 5A Power Supply (AU Plug)

What Makes This a Smart Buy:

This compact mono amplifier delivers serious power without taking up much space, making it ideal for dedicated speaker channels or expandable HiFi systems. With flexible inputs, subwoofer connectivity, high-pass filtering and efficient Class D operation, it offers plenty of versatility for building a tailored audio setup.