Upscale Audio is the world's largest purveyor of vacuum tubes for high fidelity home audio, including rare, vintage, and 'new old stock' tubes that aren't available anywhere else. Upscale also supplies over 80 brands of high-fidelity components for music enjoyment and is an importer and distributor of several fine brands, including Tannoy, PrimaLuna, Pathos Acoustics, Kiseki, and Feliks Audio.