Most home espresso grinders still dose by time. Change the grind by a few microns, the beans age a day, the kitchen humidity shifts, and yesterday’s 18-gram dose is 16.8 or 19.4 this morning. You end up with a scale on the counter, a timer you no longer trust, and a shot that only lands when you stand there and watch it. The Mahlkönig E64 WS is built around the idea that it shouldn’t have to be that way. The Mahlkönig E64 WS Home Espresso Grinder brings Grind-by-Weight and Mahlkönig’s Disc Distance Detection, technology that used to live on café grinders, onto a home counter that is about six inches wide. Special steel 64 mm flat burrs share a grinding chamber with Mahlkönig’s SD64. A load cell under the portafilter fork stops the motor at the weight you programmed, to 0.1 g. Set the burr gap from the screen in microns, not from a collar you hope you can find again tomorrow. Hang a portafilter, pick a recipe, grind. WS stands for Weight & Sync. Pair the grinder with a compatible machine or the Mahlkönig Sync Scale, and grind size can follow the shot, not the other way around. Compact enough to live under a cabinet. Quiet enough for an early kitchen. Backed by Espresso Parts' parts inventory and support when you need a flapper, a hopper, or a human. Mahlkönig E64 WS Home Espresso Grinder Features That Deliver 64 mm Special Steel Flat Burrs The E64 WS uses 64 mm special steel flat burrs in the same grinding chamber as Mahlkönig’s SD64. At roughly 1,950 RPM idle they move 2–3.5 g per second depending on grind, so an 18 g espresso dose typically lands in about 7–8.5 seconds. The particle set is built for balanced, sweet espresso on the medium and darker roasts most home machines actually drink well: café DNA without a café footprint. Grind-by-Weight to 0.1 g A load cell under the portafilter fork tares the basket and stops the motor at the programmed dose. Change grind size, change beans, wait a day, and the weight still lands. Independent testing has shown dose standard deviation around 0.07 g when the fork is set up correctly. That is the difference between weighing every shot and pulling the shot. Electronic Micron Adjustment (Disc Distance Detection) There is no grind collar. A motorized Disc Distance Detection system measures burr gap and displays it in microns. Save grind position to a recipe. Recalibrate zero from the screen, no tools. This is the same DDD idea Mahlkönig put on its pro line, scaled into a 12.8 lb home body, so you can set it and come back to it. Portafilter Recognition Program up to ten portafilters. Hang one on the fork, and the grinder can load the matching dose. A ball-joint spout aims into 58 mm baskets. Customizable chute lighting is the vanity feature. Portafilter memory saves a weekday morning. Grind-by-Sync Connect the E64 WS to a compatible La Marzocco or Sanremo machine, a Mahlkönig Xenia, or the Mahlkönig Sync Scale. Shot data can come back to the grinder so grind size follows extraction instead of living as a guess you chase after every bag. Confirm the current compatibility list at purchase. The list grows as Mahlkönig adds partners. Hopper First, Single-Dose When You Need It The native workflow is a 250 g hopper. Permanent retention in published tests is low, around 0.3 g. Exchange retention is real, around 3.8 g. Purge after idle time or when you change coffee. A bellows and anti-popcorn lid ship in the box so you can single-dose without buying a third-party kit. This hopper grinder can single-dose. It is not a purpose-built zero-exchange single-doser. Home Footprint, Home Volume About 6" wide, 8.6" deep, 15.4" tall with hopper, 12.8 lb. The motor is specified for home and residential use, not a café bar. Manufacturer lab noise is rated under 65 dB. It is still a 64 mm flat burr grinder, just a quiet one. Matte Black and Matte White. Wi-Fi, Sync app, and over-the-air updates keep the software current. Connect it. Who the Mahlkönig E64 WS Is For The E64 WS is for the home barista who no longer