Ok, after a fast read-through this thread - I felt that it missed the nordic countries... nordic hi-fi.
Norway with brands such as Electrocompaniet (electronics), Hegel (electronics) and Patos (speakers).
Finland has many great speaker makers, like Amphion and Genelec to name a few.
Denmark with electronics from B&O, Holfi, Tangent but the danes are most famous for their speakers: Dali, Audiovector, Dynaudio, Jamo, System Audio...
And then we have Sweden... From massmarket electronics and speakers from AudioPro, to special electronics brands like Bladelius, and the swedish-danish partnership Primare and Copland (actually manufactured by Bladelius factory less than 1h drive from my home ^^..), turntables from Opus 3 and Simply Black, internationally acclaimed speakers from Marten Design.. we have speakers from Wijk Acoustics, Larsen (influenced by the famous swedish speaker designer Carlsson).. the cable giant Supra Cables, plus a bunch of smaller accessory and tweak-makers and cable makers...
But strangely, my hi-fi is a german turntable, brittish amplifier and DAC, japanese CD player and german-brittish and american speakers with brittish and american cables and interconnects. And I like french music!
It is easy to have an all brittish, or all french, or all german, or all swedish, or all danish, or all italian etc. etc. hi-fi... but it is also fun mixing and mating different products... most of the swedish products are out of my budget (except for AudioPro but I don't want an AudioPro, they're too much mass-market). A Bladelius amplifier, Wijk Speakers, Simply Black turntable, Primare CD or DVD player, and Entreq cables... Yes please, bring it on.
But I can't afford it.