- Is this amp stable at 2 ohms?
- Yes. Each channel is rated down to 2 ohms, and bridged channels are rated at 4 ohms. Keep speaker impedance within those limits to avoid protection shutdowns.
- Can I bridge it to run a subwoofer?
- Yes. Bridging pairs of channels gives two higher-power channels for a sub. Check that your sub's impedance matches the bridged rating.
- Can I use it on a boat?
- No. DS18 lists it as not suitable for boats. Salt, spray and vibration call for a marine-rated amp.
- Does it have a built-in crossover or DSP?
- It has basic crossover and gain controls, not a full DSP. If you want per-channel tuning or time alignment, a DSP amp is the better fit.
- What comes in the box?
- The amp, mounting hardware and a basic owner's manual. Wiring and fuses are not included, so plan for an amp kit.
- Where is the DS18 G8400.4D 4-Channel Class D Amplifier cheapest?
- At Best Buy, for $649.95, as of our latest check.