Quote Originally Posted by blackraven
I might sell the A21 in the coming year and buy the 550 or his SS 440H with the double die option.
I'm glad you got your unit fixed. If/when you replace the unit, don't get anything that requires crutches like "speaker relays". My '81 Threshold Stasis has been utterly reliable and uses no protection circuitry of any kind (has thirty two 150 watt output devices for 100 watts/channel operation) I prefer a unit with a robust output stage that obviates the need for such.

rw