DA-300 - Lightweight 1U Class‑D power amplifier, 2 x 300 W RMS @ 4 ohms or 600 W in bridge mode, full protection circuitry, active fan cooling

Lightweight 1U Class‑D power amplifier, 2 x 300 W RMS @ 4 ohms or 600 W in bridge mode, full protection circuitry, active fan cooling

The HPA DA‑300 is a Class‑D power amplifier in a standard 1U rack format, capable of delivering 2 x 150 W_RMS on 8 ohms and 2 x 300 W_RMS on 4 ohms.

It can also operate in mono bridged mode to deliver 600 W_RMS on 8 ohms, meeting the needs of PA and event professionals. With a damping factor >200, this 2-channel amplifier ensures excellent speaker control, essential for clear and detailed sound reproduction.

The input impedance is 20 kohm in balanced mode, offering great connection versatility. The HPA DA‑300 features XLR / TRS jack inputs and speakON and screw outputs, enabling safe and reliable connections to other professional audio equipment. Stereo and bridge modes, selectable via a switch, increase flexibility for various configurations and applications. The amplifier incorporates electronic, thermal, and electrical protection, as well as a soft start system, to ensure safe and continuous use even under the most challenging conditions.

A signal-to-noise ratio of 100 dB and a THD of just 0.1% at 1 kHz ensure excellent performance, with little background noise or distortion at high output levels. The 20 Hz to 20 kHz frequency response within ±0.5 dB ensures maximum fidelity across the entire audio frequency spectrum.

Weighing just 2 kg, the DA-300 combines power and portability, making it ideal for compact installations, DJs, musicians, and rental companies requiring a lightweight yet reliable amplifier.

User benefits

• Ultra-light 1U format: only 2 kg, ideal for mobile racks and installations with limited space
• Bridge mode: up to 600 W on 8 ohms, for example, to drive a subwoofer
• Performances (ultra-linear response, low distortion, damping factor > 200 for more precise bass)
• Both speakON and screw terminal outputs
• Total reliability: electronic, thermal, and electrical protection + soft start

Areas of use

• Mobile DJ sets and rental services
• Live music: perfect for monitors, small FOH, or rehearsal rooms
• Permanent installations in bars, restaurants, conference rooms, shops, and houses of worship
• Project studio: for driving passive monitors or dedicated listening systems
• 2.1 systems

Technical characteristics

• Class-D power amplifier 
• Power on 8 ohm: 2 x 150 W_RMS
• Power on 4 ohm: 2 x 300 W_RMS
• Bridge power 8 ohm: 600 W_RMS
• Damping factor: > 200
• Input sensitivity: 1 V
• Input impedance: 20 kohm balanced 
• SNR: 100 dB
• THD: 0.1% at 1 kHz
• Frequency response: 20 Hz - 20 kHz ±0.5 dB
• Inputs: XLR / jack
• Outputs: speakON / screws terminals
• Switch stereo and bridged mode
• Electronic, thermal, electrical protection
• Fan cooling
• Soft start
• Dimensions: 48.2 x 4.4 x 20.4 cm
• Net weight: 2 kg