What Is a Preamp, and Do I Really Need One?

Every audio system requires amplification. In a traditional hi-fi set-up, the loudspeakers are always “passive”—which is to say, they don’t produce their own power. Instead, they must receive an amplified audio signal from an external source, aptly called an amplifier, in order to do their thing. Even in a more modern, self-contained audio system (like…

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2026: The Year You Start Sleeping Well

Innerspring mattresses are made up of coils topped with fabric or foam (or both). Hybrid mattresses (a mix of innerspring and foam) have thicker layers of foam on top of the springs. On a standard innerspring you’ll feel like you’re floating on top, rather than melting into the mattress. Foam mattresses are made from synthetic…

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Best Double Strollers of 2025

Having more than one baby in the family can be a handful when it comes to all the gear you need for outings: diaper bags, more snacks, more juice boxes, and more toys. A double stroller can make smooth work of toting both babies and accessories around. Designed to seat multiple infants and/or toddlers, double…

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NASA Delays Launch of Artemis II Lunar Mission Once Again

NASA has once again postponed the launch of Artemis II, the crewed lunar flyby mission, setting a new launch window for April. Although March 6 had been tentatively planned as the launch date, the US space agency revealed that a problem with the rocket has caused further delay. According to NASA administrator Jared Isaacman, the…

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Top Tier Gasoline Is Worth the Extra Price, Study Shows

Top Tier gasoline was developed in 2004 to go beyond the minimum standard for detergent additives to better protect increasingly sophisticated engines from carbon buildup and deposits on the intake valves, which can result in a rough idle, acceleration hesitation, knocking/pinging, and reduced fuel economy. Over the past 20 years, engines have become far more precise,…

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The Best OTC Hearing Aids (2025), Tested and Reviewed

If you’re spending hundreds or thousands of dollars buying an OTC hearing aid, make sure you’re getting a product that offers a sustainable long-term solution to your hearing loss needs. Aside from the obvious things like sound quality, take a few minutes to look into these specs. What size and style works best for you?…

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