OP, Some of the manufacturers have their own circles or groups on other websites. These folks answer questions immediately and often get the techs involved directly. I know James from Bryston is one example. There is a benefit to choosing a supplier of equipment that is engaged in this way. The ones who do participate demonstrate a real concern regarding their reputation and usually it is someone at the leadership level and they want to know if employees are dropping the ball. Good Luck.
Poor Customer Service
How does it make you feel when you try to contact a mfg about their product with tech questions and they ignore you? I understand many places are suffering from a lack of help due to plandemic but when you repeatedly leave messages over a course of weeks and get no reply it sticks in my craw. I've spent my hard earned dollars on their equipment and a simple answer to my question would go a long way to endearment. When you leave a voicemail and no one bothers it's not only frustrating it's disrespectful, so much so that I don't ever want to buy their products again even if they are of good quality.