Concerning solid state equipment, there have been endless discussions of this question over the years, concerning audio equipment, computer equipment, and all kinds of other electronic things, with no definitive answers, even among electrical design engineers (I am one, and I've discussed this question with others).
My own feeling is that the answer will be dependent on the design of the particular item, both the circuit design and the characteristics and quality of the particular parts that are chosen. Doing an analysis to definitively answer the question even for one particular design would be a formidable task, and could only be done if complete documentation on the design were available.
My bottom line suggestion for solid state gear is simply a common sense one -- if you use it frequently (e.g., two sessions or perhaps even one session per day) leave it on all the time; if you don't use it frequently turn it off.
Regards,
-- Al
My own feeling is that the answer will be dependent on the design of the particular item, both the circuit design and the characteristics and quality of the particular parts that are chosen. Doing an analysis to definitively answer the question even for one particular design would be a formidable task, and could only be done if complete documentation on the design were available.
My bottom line suggestion for solid state gear is simply a common sense one -- if you use it frequently (e.g., two sessions or perhaps even one session per day) leave it on all the time; if you don't use it frequently turn it off.
Regards,
-- Al