Quick Answer: The ECM Synchronika II is a roughly $3,599 German dual-boiler espresso machine built around a 2-liter steam boiler and 0.75-liter brew boiler, both independently PID-controlled, paired with a 58mm E61 group. Per ECM, it heats up in 6.5 minutes — fast for the dual-boiler E61 class — and adds an OLED display with a tactile rotary knob plus active and passive pre-infusion on top of the standard E61 platform. It’s the machine prosumer buyers point to for build quality and repairability rather than the lowest price at this tier; sister brand Profitec sells a near-identical platform for roughly $620 less.
The Synchronika II sits at the top of the German E61 dual-boiler field — the machine our best prosumer espresso machine roundup already singles out for build quality, and the one enthusiasts compare everything else against once they’ve outgrown a heat exchanger. Below is our full take on the hardware, what the OLED display and dual pre-infusion modes actually buy you, and how it stacks up against its closest sister-brand and Italian rivals.
ECM Synchronika II, by the numbers
| Spec | ECM Synchronika II |
|---|---|
| Price | ~$3,599 (typical US street price) |
| Group head | 58mm E61, active + passive pre-infusion |
| Steam boiler | 2.0 L, stainless, PID-controlled |
| Brew boiler | 0.75 L, stainless, PID-controlled |
| Heat-up time | 6.5 minutes (per ECM) |
| Interface | OLED display, tactile rotary knob |
| Pump | Rotary, quiet, tank-or-plumb switchable |
| Water tank | 2.8 L (or direct plumb-in) |
| Dimensions | 335W x 490D x 410H mm (per ECM) |
| Weight | ~66 lb (30 kg) |
The number that separates the Synchronika II from most of its E61 dual-boiler peers is the 6.5-minute heat-up, which ECM markets as first-in-class for the category — a result of additional heating cartridges built directly into the E61 group rather than relying purely on the boiler to bring the whole brass mass up to temperature. Most machines in this tier still need the fuller 20-30 minute warm-up window the group’s thermal mass is known for.
The Synchronika II, tested
ECM Synchronika II
- 2L steam / 0.75L brew boiler, both independently PID-controlled, in a stainless steel body.
- 58mm commercial E61 group with both active and passive pre-infusion modes.
- OLED display with a tactile rotary knob replaces analog PID readouts.
- Quiet rotary pump, switchable between a 2.8L tank and direct plumb-in.
Get your new espresso machine in two days — try Amazon Prime free for 30 days for free two-day delivery. In daily use, the OLED display and tactile rotary knob are the most immediately obvious upgrade over a standard E61 machine’s analog gauges — brew and steam temperatures are both visible at a glance instead of read off dial needles, and dialing in a target temperature is a matter of turning the knob rather than adjusting a PID controller buried behind the drip tray.
The bigger functional upgrade is pre-infusion. Where most E61 machines rely purely on the group’s mechanical (passive) pre-infusion, the Synchronika II adds an electronically controlled active mode on top, letting you shape how gently water first saturates the puck before full pressure builds — a distinction our what is pre-infusion guide covers in more depth. Combined with the 2L steam boiler, which is larger than most rivals at this price, it holds up well through back-to-back milk drinks without the temperature dip that smaller boilers show on the third or fourth cappuccino.
How it compares to the closest alternatives
| ECM Synchronika II | Profitec Pro 700 | Rocket Cinquantotto (R58) | |
|---|---|---|---|
| Price | ~$3,599 | ~$2,979 | ~$3,000 |
| Steam / brew boiler | 2L / 0.75L | 2L / 0.75L | 1.8L / 0.58L |
| Interface | OLED + rotary knob | Analog PID | Dual analog PID |
| Pre-infusion | Active + passive | Mechanical only | Mechanical only |
| Pump | Rotary, plumbable | Rotary, plumbable | Rotary, plumbable |
| Best for | Build quality, control | Same platform, less money | Milanese heritage, value |
- Get the Synchronika II if the OLED display, active pre-infusion, and the largest boilers of this trio matter enough to justify the top price.
- Save roughly $620 with the Profitec Pro 700 — sister brand, same Heidelberg engineering, same 2L/0.75L boiler platform, minus the display and active pre-infusion. See the full breakdown in our Profitec vs ECM comparison.
- Consider the Rocket Cinquantotto if Italian hand-built heritage matters more than the largest boilers — it’s roughly $600 cheaper with slightly smaller 1.8L/0.58L boilers. Full breakdown in our Rocket vs ECM comparison.
- Not sure you need a dual boiler at all? Our single boiler vs dual boiler guide covers whether a heat exchanger gets you close enough for hundreds less.
Who should buy the Synchronika II
Buy it if you want the best-built E61 dual boiler you can hand down, you steam milk often enough that the larger 2L boiler matters, and you’ll actually use active pre-infusion to shape extraction rather than leaving it on the default. It’s also the pick for buyers who specifically want plumb-in convenience with the largest tank fallback (2.8L) among its direct rivals.
Skip it if the Profitec Pro 700 gets you the same underlying platform for roughly $620 less and you don’t need the OLED display or active pre-infusion — that’s real money for interface polish on top of engineering both machines already share. Skip it too if you haven’t outgrown a heat exchanger yet; our best E61 espresso machine guide covers the more affordable single-boiler E61 field first.
The bottom line
The ECM Synchronika II is the dual boiler enthusiasts save up for — a 2L/0.75L stainless boiler platform, an OLED display with active and passive pre-infusion, and a 6.5-minute heat-up that’s fast for the category, all built to be repaired and run for decades rather than replaced. At roughly $3,599 it’s not the value play; the sister-brand Profitec Pro 700 shares the same boilers for hundreds less. But for buyers who want the best build quality and the most pre-infusion control in this tier, it’s the machine to beat. See our best prosumer espresso machine guide for how it stacks up against the wider field.