Breville Dual Boiler vs De'Longhi La Specialista Arte EC9155
The Arte ($699) is a solid all-in-one starter; the Dual Boiler ($1,499) is a prosumer machine that demands a separate grinder but delivers a genuinely higher ceiling. Buy the Arte if you want a complete setup at $699 with a built-in grinder. Buy the Dual Boiler if you are already invested in a quality grinder and want true dual-boiler performance.
Spec face-off
Bars scaled to the higher value. Coloured = wins that spec.
Full specifications
Strengths & weaknesses
Full comparison
The La Specialista Arte and the Dual Boiler share more than you would expect at a $800 price gap. Both use non-pressurized baskets as the default, both have pre-infusion, and both are aimed at users who want hands-on espresso craft rather than push-button automation. The Arte includes a built-in conical burr grinder with a dosing guide and a commercial-style manual steam wand. The Dual Boiler ships without a grinder but offers significantly more thermal precision.
The Arte's 8-grind-setting integrated grinder is functional but limited. It produces roughly 80 dB of noise and offers coarse adjustments rather than the micro-step control of a standalone grinder. Its single boiler means you pull a shot, then wait for temperature to stabilize before steaming, adding 60-90 seconds to each milk drink. Active Temperature Control offers only three positions rather than degree-level precision. For a beginner building their first real espresso setup, these trade-offs are reasonable.
The Dual Boiler's triple PID system holds the brew boiler, steam boiler, and group head independently, delivering thermal precision that the Arte's single-boiler design cannot approach. The simultaneous brew-and-steam capability alone transforms the workflow for anyone making multiple drinks. Programmable pre-infusion up to 60 seconds with adjustable pressure gives advanced users substantially more dial-in leverage.
If you are buying your first espresso setup and want everything in one box under $700, the Arte is a well-rounded package. If you already own or plan to buy a quality standalone grinder, spend the extra $800 on the Dual Boiler and get a machine that will match your skills as they grow over several years.