The founder of Audiopax, Eduardo de Lima, began in audio in his teens with the production of his first loudspeakers and amplifiers, something that led him a few years later to design his first SET ("Single-Ended Triode") amplifier using a 300B tube. This achievement was, according to him, the main event of his career - the musicality and naturalness of that strange little amp exceeded all expectations, inspite of some limitations in the high and slow and poorly controlled bass (characteristics normally found in average 300B amplifiers) the midrange frequency band was simply magical. So, Eduardo de Lima spent the following years trying to explain and, mainly, control the elements that produce that magic, to achieve it without the limitations imposed by a single device.
He started the company in 1997 with his first commercial amplifier - the SE310 model (a 300B SET amplifier), that was presented with the CX305 speaker at the VSAC Show in Silverdale, USA. During this same year he developed the LM3® technology (Low Mu Triode with Higher Raw Efficiency Emulator - LMTHREE), a circuit that emulates the behaviour of 300B valves with KT88s and that was used on the SE388 model, presented in the 1998 editions of the Sao Paulo Hi-Fi Show and VSAC Show, with enthusiastic response in both cases. The same technology was used the following year on the Model 3 amplifier, a 7.5W SET based on the 6L6 tube which received together with the CX303 loudspeaker our first international review from John Potis of Soundstage!