MiiCoffee D40+ Single Dose Coffee Grinder (Black)

1-Year Review: This is a very reliable single-dose 8-star 40mm conical burr grinder that beats the 6-star Baratza Encore ESP in extreme precision of grind-size selection, overall consistency of grind, and generally low retention. The updated model I received in the US in November 2024 has several very desirable improvements (see photo). It is a fast single dose grinder that espresso-grinds 16g of French Roast beans in ~7 seconds. It grinds at 600rpm using 150W. I suggest turning on the motor before pouring in the bean dose to minimize startup stress on the grinding components and prolong the life of the grinder. This also leads to better bi-modal coffee grind consistency. Pros: 1) The labeling of the grind-size selector-ring has been swapped so that the indicator arrow is now at a fixed location on the front body of the grinder and is very easy to see no matter what grind size is selected. The rotating ring is now labeled with numerical grind settings (see photo). In the original version it was the indicator arrow that was on the rotating ring and some grind settings could only be read from the back of the grinder. The rotating ring's dial position on the internal upper burr collar can be changed by loosening a small recessed lock-screw on the ring dial itself. This allows setting the "zero-position" calibration of the selector dial so that it can be adjusted to correctly display the minimum "0" grind clearance when the rotating burs begin to "Chirp" against each other. However the diagram bellow the indicator arrow may still at first seem confusing until you realize it is actually indicating what "clock direction" to ROTATE the selector ring. The LEFT-pointing arrow indicates turning the selector ring CLOCKWISE (dialing larger numbers) produces courser grinds vs. the RIGHT-pointing arrow indicates turning the selector ring Counter-CLOCKWISE (dialing smaller numbers) produces finer grinds. 2) The black rubber bellows now have an exterior flat matte finish rather than a glossy finish. This makes it much more cosmetically appropriate and matches well with the black matte paint of the grinder body. 3) The cap is now made of real wood rather than plastic simulated wood. 4) The 58mm diameter metal grind collector cup has a rim-lip that is a perfect fit for 58mm filter baskets and can be used as a "Blind Shaker". The collector cup is tall enough to avoid grind spillage out of the chute while grinding but you probably will still need to hold the cup a bit closer to the chute to avoid coffee grind blow-out when sharply compressing the bellows. By using the portafilter as a lid for the grind-filled collector cup, the capped cup can be used as a "Blind Shaker" to effectively distribute the bi-modal coffee grind and avoid clumping. If the upside-down capped cup is given a gentle final tap by vertically hitting the bottom of the portafilter against the counter-top tamping mat, the grinds typically end up well located in the filter basket. The portafilter will have a narrow empty border around the top of the filter basket interior wall and the grinds will be ready for final tamping. Note using a fine-wire WDT tool is no longer necessary or even recommended with "Blind Shaking". 5) The grinder included a very nice quality wooden natural bristle brush that is very useful in general cleaning of the burrs and the main portion of the chute. Hover the brush is designed such that it cannot reach deep enough into the chute to clean the internal silicon rubber grate that is located at the very top of the chute (see Cons). 6) The grinder included the needed Allen Wrenches to dismantle the burrs and adjust the grind selection ring. However it did not include the needed 2.5mm Allen Wrench to dismantle the chute for deep cleaning (see Cons). Cons: 1) The very top of the chute has an internal silicon rubber grate that decreases static cling of the grinds but as a consequence some grinds will pile up behind the grate. If not periodically cleaned, a small clump of old accumulated grinds may suddenly dislodge into your current coffee dose. It is good annual maintenance to remove the chute and burrs for inspection and deep cleaning. 2) The provided cleaning brush does not extend deep enough into the chute to reach the rubber grate. Fortunately I have a long pencil-sized soft brush that can safely reach the grate and gently dislodge the small amount of accumulated grinds. 3) The grind size selection is continuous though the selector dial does have gentle "click-stops" which serve as general position guides. Once set, the selector dial stays at that setting while grinding. However if the grinder is at all jolted while moving it on the countertop, the dial may accidentally shift to the nearest click-stop. 4) Unlike the Baratza Encore ESP, there is no "anti-popcorn" shield at the bottom of the bean hopper and occasionally the final set of beans in the dose may not automatically flow into the burrs. At the end of grinding a dose, sharply compressing the bellows while the grinder is still ON will not only flush any retained coffee grinds out of the chute, it also forces any stray beans to finally fall into the burrs and complete the full dose. 5) The grinder's red AC power-status LED is always on as long as the grinder is plugged into an AC outlet and it is therefore always consuming a very small trickle charge. This can be annoying if you don't like having a continuous red-glow "night-light" on your counter-top.

Fits perfect, small, no noise, good for espresso and pour-overs. Grind seems very consistent. Good build. Can complain. A little bit of coffee can escape after using a bunch of times. I had to open it and readjust the tickers. The scale goes up to 8. For pour overs I had to dial at 8 plus like 5. So I reset the scale to make espresso around 1.5 and pour overs around 8.

Well-built and solid feeling, the D40+ gives me very consistent fine coffee grounds, perfect for espresso. I have to take it apart and clean it out frequently. After 10 grinds (enthusiastically using the bellows to clear it each time), I removed a gram of coffee grounds from the burrs and outlet. When I am changing the grind size to dial-in my espresso shot (or switching to a different coffee bean), this amount of retention is a hassle. One of the Allen wrenches supplied for dismantling and cleaning were the wrong size. The fit & finish is otherwise good. If you don't mind pulling it apart and cleaning it every few days, this is a good, budget espresso grinder.

I am new to coffee grinders, espresso machines and all the accessories so tried to do a fair amount of research before any purchases of such equipment. I wanted something that would perform well but a small kitchen makes size a large part of the consideration. I purchased a Breville Bambino Plus so needed a companion grinder. I have used this grinder daily now for two months and it has performed very well. I had to set the dial up to 6 for the beans I am using. There is little retention, I usually get the same wt out as put in, there is never more than 1 gram difference. I find clumping varies, depending on the bean - I buy beans from a local roaster and one type clumps a bit more than the other, but in my limited experience I do not consider the clumping excessive. I do use one of those WDT tools, and seems to work well, I get consistent results. I do not find the noise at all excessive or objectionable, especially since it only takes a short amount of time to grind. I was pleasantly surprised at how sturdy it felt when I took it out of the box (it comes very well packed), has a good weight for its size. Love the look of it and the size is perfect next to my Bambino Plus with my limited counter space. Time will tell, of course, but so far I am very pleased with this purchase. I am so much happier with the espressos coming from my machines than I ever was with inconsistent coffee shop drinks.

Muy mala experiencia, me he gastado 199 USD y no tengo nada. Servicio al cliente pésimo de Amazon y el fabricante MiiCoffee. Compré un producto que en su descripción dice 220V y cuando lo conecte se quemó. Es de 110V como se puede ver en la foto de la parte inferior. Cuando abrí el equipo lo coloqué en la encimera de la cocina, sin ver la pegatina inferior claro. Sí abrí el manual de usuario donde no detalla el voltaje, como también se ve en la foto, pero habiendo comprado un producto de 220v por que iba a estar mal la descripción de Amazon. En cualquier caso la única opción para devolver el producto en Amazon es pagando yo el envío, que desde Perú supone prácticamente el precio del mismo y la respuesta del fabricante fue peor todavía. Cuando contacto al servicio técnico de MiiCofee y les explico lo sucedido me dicen que contacte con Amazon y que ellos solo vende ese equipo en 110V. Les informo que en Amazon está así y que si al menos me pueden suministrar el repuesto de la placa quemada. No me dan ninguna solución más que darme un descuento si compro un producto superior. El producto no se que tal será pero su servicio al cliente es malísimo además ni les importaba que la descripción estuviera así en Amazon, según ellos la suya en su página estaba bien. Si no lo corrigen habrá más reclamos y accidentes con otros clientes fuera de USA.

El molinillo cumple con lo que dice. Me gusta que es bastante robusto con un buen peso y los materiales son buenos. El vaso tiene un imán y hace que no se mueva. El ruido que hace es bastante bajo, y muele el café a la perfección. Yo uso una expresso con portafiltro sin fondo y lo pongo al 3 o 3,5. Una cosa a tener en cuenta aunque puede que no le pase a todo el que lo pida, es que cuando lo probé, no me molía el café según la numeración, es decir en la parte donde se supone que tiene que molerlo fino no lo hacia y casi siempre lo molía grueso. Probé dándole vueltas a la rueda, para un lado y para el otro y no iba de ninguna de las maneras, lo desarmé, todo estaba bien. Hasta que me di cuenta que la rueda que tiene la flecha estaba en la posición incorrecta. Tuve que desarmarlo y quitar solo la rueda de la flecha(que tiene un mini tornillo) después girar la otra rueda de los números hasta el tope, que supuse que ese tope sería el 0.”, ya que la rosca giraba hacia abajo. Después puse la otra rueda de la flecha en el 0, y volví a armarlo todo. Y después volver a darle una vuelta mas hacia el otro lado. Menudo calentamiento de cabeza para llegar a esa conclusión. Pero ahora sí va todo perfecto y puedes calibrar perfectamente el tipo de molienda. Otro fallo es que no se apaga si no lo desenchufas de la corriente, pero le puse una regleta con interruptor y arreglado. Yo estoy encantada y es muy bonito. Lo recomiendo 100%

Fantastic grinder. It can grind beans incredibly finely, finer even than most espresso machines can use. The price is low, but the quality is amazing.

Arrivato con giorno di anticipo, lo sto usando da un paio di gg e funziona perfettamente. Lo utilizzo con una macchina automatica Jura su livello 1,8. Ho anche provato con una macchina x caffe’americano scegliendo un macinato piu’ grosso e anche in questo caso tutto ok. Poco rumoroso, tutto in metallo, spina europea, la sua pesantezza lo mantiene molto stabile. Non sono un professionista, quindi non peso al milligrammo quanta polvere residui nel macinino, ma il sistema x eliminare i residui funziona molto bene, quindi credo sia davvero poca. Infine, non meno importante, occupa pochissimo posto ed ha un’estetica molto gradevole. Le istruzioni per quanto riguarda l ‘utilizzo della ghiera x la dimensione del macinato dovrebbero essere piu’ chiare, ma per fortuna c’e’ internet, ed essendo il prodotto molto conosciuto si trovano, specialmente sui forum, tutte le risposte possibili. Dubito che per questa cifra si possa avere di meglio.

Es macht jeder Mahlvorgand Spaß. Und wenn es nur der Auffangtopf ist, der sich per Elektromagnet in die richtige Position zieht. Bandbreite der Körnung mehr als ausreichend. Selbst wenn man Puder herstellen möchte….

Stepless grind size adjustment. (check that it's the D40+ for stepless) Fairly low retention if you use the bellows. Not as loud as I expected it. There was a bit of clumping. Recommended setting for espresso was 0.5-1.5. Ended up with 2.2 for a 17g shot (medium roast) and a 32 sec shot time. Tasted great to me, texture, body etc. Build quality and features are as advertised. To me they were very good. Not enough of a coffee snob to say more than this. It's good enough for me, for the price and espresso results.