Re: CPC's little secret
All the 464 brand names were ones that might have appeared on a home computer in an electrical store. So "Triumph" is not related to any of the usual guesses, although I don't recall what the correct answer is. My top candidate would be an in-house brand of another UK chain (such as Rumbelows). I just did an eBay search and came up with this collection of Triumph "Vintage hifi separates", http://www.ebay.co.uk/itm/hi-fi-separates-/261399503754