Parasound ZoneMaster ZM4 Multi-Zone Power Amp 120W ×4 into 8 Ω
🔊 Powerful Multi‑Zone Sound in a Compact Rack Unit
The ZM4 fits into a mere 1U chassis but packs four full channels—ideal for powering speakers in multiple rooms without taking up space. Whether you’re running backyard speakers, a secondary stereo, or home theater surrounds, it delivers clean, consistent volume that stays smooth even under heavy loads.
Each channel delivers 120 W into 8 Ω and 150 W into 4 Ω/2 Ω—enough muscle for passive speakers anywhere—and it’s designed to stay cool and reliable with low noise and heat.
💬 What Users Say
- “Clear, dynamic sound and plenty of headroom.”
- “Handles power-hungry speakers without flinching.”
- “You get real music tone, not just volume.”
🛠️ Where It Fits in Your System
Connect it to your AVR or processor’s pre-outs or bus input. You can power up to four pairs of speakers—or create two independent zones with stereo or mono output per zone. Audio-sensing and 12V triggers mean it turns on only when needed.
Perfect for home theater owners who want better surrounds or Atmos channels without clutter, or for those adding zones in bedrooms or outdoor areas with ease.:contentReference[oaicite:2]{index=2}
✨ What Makes It Special
- 120 W ×4 into 8 Ω; 150 W into 4 or 2 Ω—for reliable drive even under strain
- Class A/B input stage with premium Class D output for clean sound and efficiency
- Dual A/B speaker outputs per channel and mono‑mode switch for flexibility
- Bus input with looping outputs—perfect for daisy‑chaining amps
- Audio-trigger and multiple 12 V triggers for easy automation
- Short-circuit and thermal protection, Energy-Star low 0.5 W standby draw
- Compact 1U rack size with included mounting ears—great for tight spaces
🔍 What You’ll Notice
- Clean and controlled sound throughout the listening area
- No hum or background noise, even at low volume
- Reliable performance when driving multiple speakers or zones
✅ Final Word
The ZM4 is your ultimate multi‑room amplifier in a tight package. It delivers clean, powerful sound where you need it—whether adding zones, boosting home theater surrounds, or running whole‑house audio—without adding bulk or complexity.