Seismic Audio - LandSlide 12P - 12 Channel DSP Professional Powered Mixer Power

If you're tired of hauling separate mixers and power amps to every gig, the LandSlide 12P handles both jobs in one rack space. This 12-channel powered mixer delivers 250 watts RMS per channel at 4 ohms — enough juice to drive your passive mains without breaking your back or your budget.

The preamps are clean and quiet, hitting -129.5 dBu EIN, which means your vocals cut through without that annoying hiss you get from cheaper boards. Each channel gets discrete preamps, +48V phantom power, and simple 2-band EQ at the frequencies that matter most for live sound (80Hz and 12kHz). Peak LEDs on every channel keep you out of distortion territory when things get loud.

The built-in DSP provides 16 effects — mostly reverbs and delays that work well for live vocals and instruments. You're not getting studio-quality processing here, but for adding some space to your mix without dragging along a separate effects rack, it does the job. The 5-band graphic EQ on the master section helps you fight room acoustics, and the aux send handles monitor feeds or external effects if you want to expand your processing options.

What this mixer is NOT: a substitute for dedicated power amps in larger venues or high-SPL situations. At 250 watts per side, you're looking at small to mid-sized rooms — think coffee shops, small clubs, churches, school events up to about 200 people. Push beyond that and you'll want more headroom.

Bottom line: If you're a working musician, small band, or mobile DJ who needs reliable mixing and amplification in venues under 200 people, this powered mixer eliminates gear complexity without sacrificing sound quality.

Pro Tip: Run your mains at 4 ohms to get the full 250 watts, but keep your monitor sends on the aux bus — that way you're not stealing power from your house mix when the drummer wants more vocals in their wedge.

Technical Specifications

• Model: LandSlide-12P
• Channels: 12 discrete input channels
• Power Output (4Ω): 2 x 250 watts RMS
• Power Output (8Ω): 2 x 150 watts RMS
• Inputs: Gold-plated XLR and balanced 1/4" per channel
• Phantom Power: +48V
• Channel EQ: 2-band (Hi: 12kHz ±15dB, Low: 80Hz ±15dB)
• Master EQ: 5-band graphic
• DSP Effects: 16 built-in effects
• Frequency Response: 10Hz to 60kHz ±3dB
• THD+N: 0.01% at +4dBu, 1kHz
• Mic EIN: -129.5 dBu (150Ω source)
• Signal-to-Noise Ratio: +112dB (all channels at unity gain)
• Max Output Level: +22 dBu balanced
• Outputs: 4 SpeakON (2 per amplified channel), RCA, Aux Send
• Additional Features: Peak LEDs, aux bus, overload protection
• Recommended For: Bands, venues, mobile DJs, churches up to 200 people

Frequently Asked Questions

Can this mixer handle my 4-piece rock band's gigs?

Absolutely. With 12 channels, you've got plenty of inputs for drums, bass, guitars, and vocals. The 250 watts per channel drives most passive PA speakers loud enough for club gigs and outdoor events up to 200 people. Just make sure your speakers can handle 4-ohm loads to get the full power output.

Do I need to buy separate speaker cables?

Yes, you'll need SpeakON-to-SpeakON cables to connect your passive speakers. The mixer has four SpeakON outputs (two per amplified channel), so you can run multiple speakers per side or bridge configurations. Don't use XLR cables for speakers — they're not rated for the power and can cause problems.

How does the built-in DSP compare to external effects?

The 16 built-in effects are solid for live use — decent reverbs and delays that add space without muddying your mix. They're not studio-quality, but they're better than no effects at all. If you need more complex processing, the aux send lets you add external gear while still using the internal effects on other channels.

What happens if I need more power for bigger venues?

The LandSlide 12P tops out around 200-person venues. For larger spaces, you can still use it as a mixer and send the line outputs to external power amps or powered speakers. The preamps and EQ sections work great regardless of whether you use the built-in amplifiers.