Jaç Hi-fi Cafe

the hi-fi listening room built around custom Bloom Island speakers

A specialty coffee spot meets Japanese listening bar on Avinguda Diagonal. Opened July 2025, the Isern Serra–designed space merges kissa culture with Mediterranean ease across 95 square meters of walnut, concrete, and warm light.

Jaç Hi-Fi Café opened July 2025 on Avinguda Diagonal, founded by Ligia and Arnau, with an interior by Isern Serra Studio spanning 95 m² in walnut, stainless steel, and microcement. It reinterprets the Japanese jazz kissa through a Mediterranean lens — warmer and brighter while keeping music central — with a monolithic walnut bar housing speakers and a rear listening alcove with vinyl, low tables, and custom seating. The kitchen serves breakfast-leaning fare: tomato toast with Iberian cold cuts and family-recipe pastries, alongside in-house roasted single-origin coffee and matcha from two Japanese growers. The name 'Jaç' nods to jazz and means 'to recline, rest, and let go' in Catalan. The space has drawn significant design press (Wallpaper, Designboom, Yellowtrace) but little conventional restaurant-review coverage; no hours or reservation policy were published.