Audio Projects for Home Entertainment

For more years than I care to remember I've been tinkering with audio amplifiers to listen to vinyl records, tape decks, FM receivers or to provide music for an event. My first unit was a pair of 6L6G tubes with big transformers providing some 40W into open frame speakers built in 1960 for a school event... This project was followed by a classical 2x EL84 full amplifier - later converted to stereo - and the 6L6G unit upgraded to a full amplifier. All the while tinkering with preamps, tone control, single ended amplifiers etc. slowly converting from tubes to transistors and ICs.

As there has been quite a revival of tube amplifiers and - quite apart from the "audiophile" group - many people are interested in building such units, there follows some information on projects being done here using sometimes recently available nice PCBs from China combined with quality components and transformers obtained from the EU or sometimes from my stock. Where available the sources of these materials are listed. There are several projects and I try to describe them as they are completed:

 

EL6400 MkII
The refurbished Philips EL6400 MkII.

Amplifiers

 

 

Other audio projects