Izzo Alex Duetto IV Plus Independent brew and steam boilers. Your temperature, your rules. The Duetto IV Plus in Chrome/Black gives you a dual boiler system where brew and steam temperatures operate on separate circuits. Precision PID on both boilers locks in your settings so every extraction stays consistent — whether you're dialing in a new single origin or pulling your daily house blend. How It Works Two independent boilers mean your brew water temperature never gets disrupted by steam demand. The brew boiler holds steady at your chosen temperature while the steam boiler maintains its own pressure for instant, dry steam. PID controllers regulate both systems simultaneously, making corrections faster than you could detect any drift. The result is shot-to-shot consistency that heat exchanger machines simply cannot match. The Engineering Dual Boiler System Dedicated brew and steam boilers operate independently. Adjust one without affecting the other — full control over both sides of your drink. Precision PID Both boilers run on PID temperature regulation for consistent heat stability across your entire session. No temperature surfing required. Professional Grade Commercial-quality components inside a home-friendly chassis. Built for daily use that stretches into years of reliable service. Chrome / Black Knobs Polished chrome body with black accent knobs. Classic espresso machine aesthetics with a modern, understated edge. Who It's For Great Fit Home baristas who rotate between different roast profiles and need independent temperature control. Milk drink enthusiasts who steam constantly and can't afford brew temperature interruption. Small cafe setups that demand dual boiler stability. Not The Best Fit Users who primarily drink straight espresso without milk — a single boiler with PID may serve you well at a lower price. Beginners who aren't yet adjusting brew temperature between coffees. Multi-group commercial environments needing higher volume. Want to see this Duetto in person or compare finishes? Call 323-592-3303 — we carry the full Izzo range and can help you choose.