Well grammer is key to people understanding you. Luckily, I get it, but others are not as patient.
Here is an excerpt:
gud == goodgud or wht other way cud it b to turn on the amp only wen i want to
wht == what
cud == could
b, I'll let it slide...
wen == when
And it is a question, so a "?" is in order.
I redirect you to the following link for future reference: Punctuation & Grammar FAQ
I deliver chinese food myself, and my computer is constantly being put into standby, and turning off the amp. It works fine. Obviously, the more you turn it on/off always effects the products life use, by heating and cooling, and heating and cooling, and then relays being worn out by switching the power, and so on. It should not make any real big difference.