What should I look for in a power amplifier?
Quick answer
When choosing a power amplifier, prioritize adequate power output (matching your loudspeakers' RMS/peak ratings), high efficiency (Class D for touring, Class AB for fixed installs), reliable protection circuitry, and lightweight design for portability.
First, match the amplifier's continuous power (RMS) to your loudspeakers' program power rating—typically 1.5–2x the speaker's continuous rating for headroom. Peak power should handle transients without clipping. For SSOUNDS systems, we recommend amplifiers delivering clean power at the nominal impedance (e.g., 4 or 8 ohms per channel) to ensure full SPL and dynamic range.
Efficiency matters: Class D amplifiers (like SSOUNDS' touring amps) run cooler and lighter, ideal for portable PA. Class AB offers lower distortion but more heat—better for fixed installations. Look for built-in DSP and network control (e.g., Dante, AES67) for system tuning and monitoring, which SSOUNDS integrates into its amplifier platforms.
Protection features are non-negotiable: thermal, short-circuit, DC offset, and clip limiters safeguard both amp and speakers. Also consider damping factor (high >200 for tight bass) and signal-to-noise ratio (>110 dB for clean output). For large-scale systems, amplifiers with redundant power supplies and hot-swappable modules ensure reliability.
Key things to consider
- Match amplifier RMS power to speaker program power (1.5–2x continuous rating).
- Choose Class D for lightweight, efficient touring; Class AB for low-distortion installs.
- Ensure built-in DSP and network control for system integration and remote monitoring.
- Verify protection features: thermal, short-circuit, DC offset, and clip limiters.
- Check damping factor (>200) and SNR (>110 dB) for clean, tight performance.
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