Wednesday, November 2, 2016

Tripath 180W Class D power amp with V1.3 EAT boards.

Here is the latest amp boards (V1.3) from Eastern Audio Technologies. The front of the brd. is very different but not the backend. This still has speaker crowbar protection and the great sound of a true Tripath Class D. With 180W RMS into eight ohms, on tap, this amp will drive any load easily. To ensure maximum current transfer into the first 8,000uf cap the 10A bridge is soldered directly onto it. I doubled the thickness of the wiring from the 500VAC tranni to the first cap. A second 8,000uf cap provides all the filtering. There is more (10,000uf) storage onboard. I called this amp "The Ghost" because is so transparent.

I usually tin the heavy multi-strand hook-up wire which brings DC power to the brd. and hooks-up the speakers to the brd. But why pass the power and the audio output through another different laying, this time tin and lead. So bare copper connection are made where required. Result is a cleaner, clearer more transparent sound. So good a friend heard one track with this amp and his AU$22K Harbeth 40.2 speakers and bought the amp on the spot. He already had some expensive SS amps but this bested them all. Good result all round.