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The HMX Blue Topaz and HMX Bad Sweetheart switches are both standard MX mechanical switches of the linear breed. They both feature P4 bottom housing, standard stem shape, 2 mm pre-travel, however, they come with different top housing (PC (glitter) vs PA12), stem material (LY vs T5), spring (22 mm single-stage vs 22 mm KOS single-stage extended), actuation (40 g vs 45 g), bottom-out force (48 g vs 50 g), total travel (3.90 mm vs 3.80 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 HMX Bad Sweetheart is a linear standard MX mechanical switch with PA12 top housing, P4 bottom housing, and T5 stem (standard shape). It features a 22 mm KOS single-stage extended spring. The 45g actuation occurs at 2mm. The 50g bottom-out occurs at 3.80mm. Factory lubing? Yes! Designed by RENA LAB. Manufactured by HMX. |
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| Name | HMX Blue Topaz | HMX Bad Sweetheart |
|---|---|---|
| Type | linear | linear |
| Footprint | 5-pin | 5-pin |
| Top housing | PC (glitter) | PA12 |
| Bottom housing | P4 | P4 |
| Stem material | LY | T5 |
| Stem shape | standard | standard |
| Spring | 22 mm single-stage | 22 mm KOS single-stage extended |
| Actuation | 40 g | 45 g |
| Bottom-out | 48 g | 50 g |
| Pre-travel | 2 mm | 2 mm |
| Total travel | 3.90 mm | 3.80 mm |
| Lube | Factory lubing? Yes! | Factory lubing? Yes! Mixed GPL105&GPL205 on leaf spring, stem feet, and bottom housing rails. |
| Designer | Mage Studio | RENA LAB |
| Manufacturer | HMX | HMX |
By tracking prices and in-stock status of 30+ well-known keyboard stores worldwide, we can state that the HMX Blue Topaz is much more widely available, but the HMX Bad Sweetheart is also available in stores.
Clicking the links below take you to some notable keyboard shops offering HMX Blue Topaz and HMX Bad Sweetheart 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 HMX Bad Sweetheart 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 Bad Sweetheart switch designed by Rena Lab is one of the deepest sounding HMX switches so far; Thanks to the T5 UPE blend stem, the spherical stem tip, and the new P4 bottom housing molding, they don't sound like your usual HMX type. The new P4 bottom housing comes with as less fiberglass as possible in order to eliminate the clacky tone from the sound profile. If you are a fan of deep and thocky sounding switches that are not muted, the Bad Sweetheart switches would be a great option – Unikeys. |
