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The name on the box says “1800 Watts,” but that number belongs to peak/max power, not what this amp actually delivers under continuous use. The BOSS Audio PF1800 is a genuinely capable budget 4-channel amp once you look past the marketing headline — this BOSS Audio PF1800 review covers the real RMS output straight from BOSS’s own manual, what its bridging and crossover controls actually offer, and who this amp makes sense for at its price.
In this review:
BOSS Audio PF1800 Specs at a Glance
| Spec | Detail |
|---|---|
| RMS Power | 169W x4 @4Ω / 338W x4 @2Ω / 675W x2 bridged @4Ω |
| Class | Class A/B, MOSFET power supply |
| THD | 0.01% |
| Signal-to-Noise Ratio | 103dB |
| Inputs | RCA (low-level) and speaker-level (high-level) |
| Stability | 2-4 Ohm stable |
| Dimensions | 13.5″ L x 10.31″ W x 2.5″ H |
1800W vs Real RMS — What’s Actually Happening
Every BOSS PF1800 listing leads with “1800 Watts” because that’s the max/peak figure — a brief burst number tha