When Harold Joseph Leak started his business in 1934, he first manufactured several amplifiers as contractor for the cinema and recording industry (like Geaumont Kalee and General Electric Co. I will start the series of entries with a quite common example of the early 1950's Leak models, their last called 'point one' amplifier, the TL10 point one. Leak TL10 'point one', with their typical straight golden appearance with black transformer covers. So a careful knowledge based restoration make them to be a lifetime investment with exceptional natural capabilties and as lively sounding instruments too, when properly implanted with efficient and expressive transducers. They don't shy any comparison with more modern examples of their bread, their exceptional realized superiority has made them to icon of the audio age. Almost all Leak power amplifiers are excellent audio performers independent of any later built technology (transistor>integrated>classD). Aim hereby will be the historical correct interpretation of the final result in perfect balance with the best possible audible ability in mind. I want to introduce a bit history of this manufacturer and try to show the adequately organized preservation of early examples with well selected parts and components. I will start with one of the most famous european brands from the golden age of tube amplification, the H. Cost cutting issues were within audio products likely the same than in any other industrialized mass production the decisive argument killing any individual contribution towards quality. I want to give some advanced help for enthusiasts following here to preserve some rare and incomparable products representing audio history with tremendous skills to perform music in many respects a lot better than later made products. Today I want to start with a long planned series about vintage valve power amplifiers and their restoration for everyday use.

Valve el33 and kt61