Koss Headphones

The Porta Pro has been sold essentially unchanged since 1984, and there's a reason it's still a cult favorite: some of the most natural, feel-good bass you can buy under $50, in an open-back design that weighs about 60 grams. Owners who've been through a dozen pairs describe the sound as warm and forgiving — rich low end, smooth mids, and a relaxed top end that never fatigues, though everything above the presence region is noticeably soft compared to modern neutral headphones. Because it's open, it leaks in both directions: everyone on the bus hears your music, and you hear the bus. The retro headband with its 'comfortZone' sliders is featherweight and genuinely comfortable for hours, though the temple pads pinch some heads and the folding mechanism famously grabs hair. Build is springy steel and thin plastic that looks fragile but survives decades, and Koss backs it with a limited lifetime warranty that owners actually use. The 60-ohm, 101 dB drivers run fine from a phone dongle — no amp needed. The cable is fixed and dual-entry, which is the main modern annoyance. If you want a cheap open-back for the desk or a nostalgic daily driver with real bass, this is still one of audio's great bargains.

Best for Warm, comfy open-back sound on a budget

The KSC75 is the running joke of the audiophile world that stopped being a joke: a $20 clip-on with titanium-coated drivers that enthusiasts routinely rank against headphones ten times its price. The sound is open, energetic, and surprisingly detailed — brighter and leaner than its sibling Porta Pro, with tight (not deep) bass and a spacious, airy presentation from the fully open earclip design. Owners' main gripes are physical, not sonic: the plastic ear clips are fiddly, the build feels like a cereal-box prize, and there is precisely zero isolation, so these are desk-and-home headphones only. The most popular move among long-term owners is ditching the clips entirely and mounting the drivers on a cheap third-party headband, which fixes comfort completely. At 60 ohms and 101 dB sensitivity they run fine from any jack, and Koss's limited lifetime warranty covers the inevitable abuse. Treble-sensitive listeners may find the upper mids spicy, and bass-heads should look elsewhere. But dollar-for-dollar, this remains maybe the single best value in wired audio — most people who try one end up buying spares.

Best for The cheapest real taste of audiophile sound