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The HP-1 is a professional headphone for music production, mixing, gaming, and everyday listening. With 3 selectable voicings, the HP-1 gives you a neutral, accurate view of your mix, and also allows you to check how your work will sound on the most popular headphones in use today. Quality-of-life features like Bluetooth, noise cancelling, and 40 hours of battery life make the HP-1 a fantastic all-around headphone.
What matters most here: is US$129 cheap enough to make you stop hunting? Against a recent used market median of US$347 and a 25th percentile of US$250, this lands well below the lower quartile, so it reads as a strong deal rather than just a fair buy.
That makes sense for a well-liked monitor-style headphone: the HP-1 is appreciated for its multi-reference voicing, giving you different tuning options in one set, which is genuinely useful for tracking, casual listening, and checking mixes across references. At this price, the upside is getting a versatile, respected tool at a deep discount; if the pads, cable, and drivers are in clean shape, it’s the kind of used listing that’s easy to justify.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Kali Audio is a California-based pro-audio brand founded in January 2018 by a group of former JBL professionals, including co-founder and president John Melikyan. The company is based in Southern California and positions itself as an engineering-led manufacturer rather than a heritage hi-fi house.
Its core focus is loudspeakers, especially studio monitors and related professional playback products. Kali is best known for nearfield monitors such as its LP-series and other monitor lines, with product naming tied to California towns and cities. It is not known for turntables, DACs, headphones, cables, or traditional consumer hi-fi electronics.
In market terms, Kali Audio sits in the pro-audio / project-studio segment: value-conscious, performance-driven, and technically credible. It is generally viewed as a mid-tier to upper-value brand rather than a luxury or vintage-collector name, with a reputation for delivering strong measured performance and practical features at accessible prices.
See all Kali Audio listings on RADAR.
