Kees van der Westen Speedster vs La Spaziale S1 Vivaldi II
Technical comparison · Dual boiler
Speedster and S1 Vivaldi II differ in pre-infusion and group head type: on the measurable specs neither takes the lead, so the choice comes down to which architecture you prefer.
| Parameter |
Speedster
Kees van der Westen
F5 · Professional
|
S1 Vivaldi II
La Spaziale
F4 · Semi-professional
|
|---|---|---|
| Identity | ||
| Use tier | F5 — Professional | F4 — Semi-professional |
| Price | ||
| Price (€) | ~11000–25000 € | ~1000–2200 € |
| Price updated on | 09/2026 | 09/2026 |
| Universal specs | ||
| Dimensions (W×D×H) (cm) | — | 41.5 × 41.5 × 38.5 cm |
| Weight (kg) | 45 kg | 28 kg |
| Voltage (V) | 220 V | — |
| Category specs | ||
| Boiler architecture | Dual boiler | Dual boiler |
| Portafilter diameter (mm) | — | 53 mm mm |
| PID control | Yes | — |
| Brew pressure (bar) | 9 bar | — |
| Pump type | Rotary | Rotary |
| Pre-infusion | Passive spring | Programmable |
| 3-way solenoid valve | Yes | Yes |
| Group head type | Saturated group | E61 |
| Boiler material | Stainless steel | — |
| Steam wand | Manual steam wand | Manual steam wand |
| Plumbable | Yes | Yes |
| Pressure gauge | Yes | Yes |
The differences that matter
- Pre-infusion: Speedster Passive spring · S1 Vivaldi II Programmable
- Group head type: Speedster Saturated group · S1 Vivaldi II E61
Questo confronto rimanda alle due schede, dove trovi i dati completi e i link ufficiali.