FiiO JM21 Review & 2025 Audiophile DAP Showdown: The $199 Hi‑Fi Player Shaking Up Astell&Kern and Sony
Design & Build The FiiO JM21 breaks from the chunky designs of past FiiO players, offering a sleek, smartphone-like form factor. It measures about 120.7 × 68 × 13 mm and weighs only 156 g headfonia.com – roughly half the weight of FiiO’s higher-end M23 player. Reviewers note this is one of FiiO’s first truly “pocketable” DAPs in years, calling it “refreshing” in its compactness headfonia.com. The chassis uses a two-tone sky blue scheme: an aluminum alloy front frame for rigidity and a textured plastic back for grip headfonia.com stuff.tv. The build may not feel as tank-like as all-metal flagships,