Yunzii AL66 vs B75 Pro MaxScreen or Portability?

The Yunzii B75 Pro Max has a significantly larger 8000mAh battery, while the AL66 has a 4600mAh battery. This means the B75 Pro Max will last much longer on a single charge, especially when using wireless connectivity, making it the clear winner for extended unplugged use.

No. The B75 Pro Max supports QMK and VIA open-source firmware, allowing you to remap every key, create macros, and adjust lighting. The AL66 does not have QMK or VIA support, so its key layout is fixed to the pre-set function, although it does offer a programmable knob.

No, the AL66 does not include a screen. The TFT screen is a feature exclusive to the B75 Pro Max, which can display battery level, date, time, system status, and custom GIFs. The AL66 relies solely on physical indicators and software.

The AL66 is listed with clicky switches, though the vendor description also mentions a linear 'Yunzii Milk Switch' option. The B75 Pro Max explicitly offers three linear switch options: YUNZII Milk V2, YUNZII Cocoa Cream V2, and YUNZII Candy. Both keyboards are hot-swappable, so you can replace the switches with any 3-pin or 5-pin MX-style switch later.

The Yunzii AL66 is smaller because it is a 65% layout with 66 keys, while the B75 Pro Max is a 75% layout with 81 keys. The AL66 is also slightly narrower (322mm width vs 334mm), making it easier to pack in a bag, though it is a bit heavier at 1145g compared to 993g.

Yes, both the AL66 and the B75 Pro Max support tri-mode connectivity: wired via USB-C, Bluetooth, and 2.4 GHz wireless. This allows you to use them wirelessly with multiple devices or with a low-latency dongle for gaming.

Yes, the B75 Pro Max is good for modding because it is hot-swappable and supports QMK/VIA firmware for software customization. However, the AL66 has a more mod-friendly hardware platform with its CNC aluminum case, slotted PC plate, and included Poron foams, making it a stronger choice for physical modding.

The AL66 scores higher in build quality relative to its price tier, primarily due to its full CNC machined aluminum case. The B75 Pro Max has a solid build but uses a different gasket mount structure without specifying aluminum in its case. For pure material durability, the AL66 is more robust.

Yes. The AL66 vendor description notes Mac, Windows, and Linux compatibility. The B75 Pro Max vendor description also states support for Windows, Mac, Linux, and Android, and its NKRO feature works across these operating systems. Both include Mac/Win support in their feature lists.

Yes, both the AL66 and B75 Pro Max feature N-key rollover. The AL66 lists it in its extra features, and the B75 Pro Max specifically mentions NKRO in its specifications, ensuring accurate simultaneous key presses for gaming and typing.

The AL66 comes with clicky switches by default, which are loud. However, it has internal sound dampening (Poron foams and PET pads) and is hot-swappable, so you could replace the switches with quieter linear or tactile ones. The B75 Pro Max comes with pre-lubed linear switches (like the Milk V2) that are inherently quieter, and its gasket mount also dampens sound, making it a better choice out of the box for quiet environments.