The Lectrofan EVO is a very decent sound machine and the fan sounds sound as good as on the Classic. You can see from the sleep tracking system that after a few days of using the LectroFan, the amount of restlessness I had while sleeping lessened. The Sound+Sleep SE offers the same features as our upgrade pick, the original Sound+Sleep—but with six additional sounds, each with four (instead of three) variations, for a total of 64 choices versus the original’s 30. Next we have the noise and fan buttons to cycle through sounds and on the bottom are volume down and up.

Brent’s 2021 sound-level test confirmed that this little machine has great range—from “almost nothing” to a maximum volume of 87 decibels (about as loud as a garbage disposal).

Ambient noises — like the sound of your AC kicking on or your cat catching a case of the zoomies in the living room — can be an annoying sleep-disruptor. Both one-time fees are a real steal compared with the costly subscriptions for the other competing apps we tried in 2020. The LectroFan EVO features multiple sound options including brown, pink, pure white noise, and fan sounds. Located on top of the machine, the Sound+Sleep’s larger speaker contributes to its fuller, richer acoustic quality.

I’ve lived in Brooklyn for eight years, so you would think that I’d finally be able to fall asleep to the city’s sounds, but alas I am as noise-sensitive as ever.With the companion app, you can time your noise to the minute and adjust the volume from your bed—which is helpful, given that these machines work best when they’re several feet away, placed between you and the source of the nuisance noise. Muchos de los informes de nuestros clientes indican que usan un LectroFan en la habitación de su bebé o niño pequeño para bloquear los ruidos distractores, creando un ambiente de paz.

Ranging from “dark noise” (low-frequency brown noise) to “white noise” (high frequency), the EVO’s colored-noise settings sound like variations of low rumbles, rushing wind, or static—neither pleasant nor unpleasant.

This variety of sounds includes brown noise, white noise, pink noise, 10 different fan emulations and two surf sounds. The EVO’s surface feels more grippy and less slippery, and there’s a connector for headphones or speakers. As explained earlier, different noises have higher intensities at some frequencies and lower intensities at others. However, it doesn’t have an official guideline concerning continuous-noise machines, which emit noises with a far lower pitch compared with typical hospital beeps and alarms.