Macworld At a glance Expert’s RatingProsGood image qualityHDR supportCan be used with multiple devicesVariable refresh rate up to 144HzElegant designConsStand sold separately for $99Blacks aren’t as deep as Apple Studio DisplayNo built-in speakers, microphone, or webcamOur VerdictThe Spectrum One with Gorilla Glass is a 4K, 27-inch display that’s an affordable alternative to Apple’s Studio Display (which starts at $1,599). It has good color quality, high brightness, and a variable refresh rate. Its black reproduction isn’t as deep as the Apple Studio Display, but the Spectrum One is a good cho…