De'Longhi La Specialista Opera EC9555.M vs De'Longhi La Specialista Arte EC9155
Side-by-side specs, source-checked. Prices are manufacturer reference (€).
| Spec | De'Longhi La Specialista Opera EC9555.M | De'Longhi La Specialista Arte EC9155 |
|---|---|---|
| Type | Thermoblock | Thermoblock |
| Price (€) | $755 | $702 |
| Boiler | Advanced thermoblock heating system with PID control and three selectable brew temperatures | single thermoblock heating system |
| Boiler material | — | — |
| PID | yes | no |
| Pre-infusion | none | none |
| Group head | — | 51mm pressurized/non-pressurized commercial-style |
| Pump | — | vibratory |
| Plumbable | no | no |
| Reservoir (L) | 2 | 1.7 |
| Heat-up (min) | — | — |
| Power (W) | 1550 | 1550 |
| Weight (kg) | 13.2 | 9.8 |
| Origin | China | — |
| Released | — | 2022 |
De'Longhi La Specialista Opera EC9555.M source · De'Longhi La Specialista Arte EC9155 source
Specs verified against manufacturer/retailer sources — see our sourcing & methodology. Last checked: Aug 3, 2026. Spot an error?