The HMX Blue Topaz and MMD Princess Linear Ultra switches are both standard MX mechanical switches of the linear breed. They both feature LY stem material, standard stem shape, 48 g bottom-out force, however, they come with different top housing (PC (glitter) vs PC), bottom housing (P4 vs PA66), spring (22 mm single-stage vs 21.4 mm extended), actuation (40 g vs 42 g), pre-travel (2 mm vs 1.90 mm), total travel (3.90 mm vs 3.60 mm). That said, they are not too similar. Let's check out this side-by-side specs rundawn with details, availability -- and even current prices -- to figure out which one fits you the best!
The HMX Blue Topaz is a linear standard MX mechanical switch with PC (glitter) top housing, P4 bottom housing, and LY stem (standard shape). It features a 22 mm single-stage spring. The 40g actuation occurs at 2mm. The 48g bottom-out occurs at 3.90mm. Factory lubing? Yes! Designed by Mage Studio. Manufactured by HMX. | The MMD Princess Linear Ultra is a linear standard MX mechanical switch with PC top housing, PA66 bottom housing, and LY stem (standard shape). It features a 21.4 mm extended spring. The 42g actuation occurs at 1.90mm. The 48g bottom-out occurs at 3.60mm. Extra: Light diffuser. Factory lubing? Yes! Manufactured by MMD. |
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| Name | HMX Blue Topaz | MMD Princess Linear Ultra |
|---|---|---|
| Type | linear | linear |
| Footprint | 5-pin | 5-pin |
| Top housing | PC (glitter) | PC |
| Bottom housing | P4 | PA66 |
| Stem material | LY | LY |
| Stem shape | standard | standard |
| Spring | 22 mm single-stage | 21.4 mm extended |
| Actuation | 40 g | 42 g |
| Bottom-out | 48 g | 48 g |
| Pre-travel | 2 mm | 1.90 mm |
| Total travel | 3.90 mm | 3.60 mm |
| Lube | Factory lubing? Yes! | Factory lubing? Yes! |
| Designer | Mage Studio | - |
| Manufacturer | HMX | MMD |
By tracking prices and in-stock status of 30+ well-known keyboard stores worldwide, we can state that the MMD Princess Linear Ultra is available at a single shop at the moment, while the HMX Blue Topaz can be found in multiple stores.
Clicking the links below take you to some notable keyboard shops offering HMX Blue Topaz and MMD Princess Linear Ultra switches. When accepted, the prices indicated already include the discount - use the KBDNEWS coupon code at checkout to claim your saving!
Prices, discounts, and stock status are checked regularly; however, changes since the last update cannot be ruled out. Everything here is for informational purposes only. Check the product pages for the latest prices!
Comments on HMX Blue Topaz switches | Comments on MMD Princess Linear Ultra switches |
Made by HMX. Blue Semi-transparent Top. Designed by Mage Studio. PC top housing, LY stem, P4 bottom housing for refined sound. Specially molded top minimizes loose top-out noise. Quieter than P3 but not as deep-sounding. Similar sound profile to HMX Hyacinth V2 – Candykeys. | The MMD Princess Ultra Thock switches are the latest variant of the MMD Princess Series and were specially designed and manufactured for the Bridge75 keyboard. As usual with MMD Princess, the switches type very well and have an even deeper sound than the Princess V4 – Monacokeys. Produced by the latest mold, the new Princess Ultra switch offers smoother and more consistent typing feedback. We've also improved the factory lubrication and bottom material, elevating the "thock" sound profile to a new level – qwertyqop. |
