I have had my share of problems with buying used equipment, but we won't count those because once they were repaired I never had any other problems.
I was changing the digital cable between my transport and DAC when static electricity blew the output chip in the transport. Madrigal repaired it quickly and inexpensively.
My Audio Research M300 monos arced a tube which in turn blew little pieces of resistor all over the room which also damaged a trace on the circuit board.
Other than that I have had good luck in over 40 years of enjoying stereo equipment.
I was changing the digital cable between my transport and DAC when static electricity blew the output chip in the transport. Madrigal repaired it quickly and inexpensively.
My Audio Research M300 monos arced a tube which in turn blew little pieces of resistor all over the room which also damaged a trace on the circuit board.
Other than that I have had good luck in over 40 years of enjoying stereo equipment.