I have owned his SDS 470C amp for at least 3 years - it has been superb. It sounds as good as my JC-1s.
About a year ago I returned it for repair of the right channel (low volume). He repaired and upgrade it without charge. It has been superb since. No issues.
He is a bit slow in responding to emails, which is not unusual for a small business. But, that’s part of the compromise when you buy a product from a small vendor that would otherwise cost you 10x more from a brand name vendor.
There is no rational reason he would not repair the amp if it has a problem - the parts are not that expensive and he could likely repair it in an hour. And I’m sure he would not risk ruining his reputation.
If he’s unresponsive, most likely it’s because he’s had some personal issues - since it seems inconsistent with his past behavior.
If I were you I would take the amp to your local electronics repair shop and have them test it, before proceeding with other action. That’s the only way you can verify whether it has an issue, or not.
If you can confirm it has an issue, I’d be surprised if he won’t repair it without charge.
About a year ago I returned it for repair of the right channel (low volume). He repaired and upgrade it without charge. It has been superb since. No issues.
He is a bit slow in responding to emails, which is not unusual for a small business. But, that’s part of the compromise when you buy a product from a small vendor that would otherwise cost you 10x more from a brand name vendor.
There is no rational reason he would not repair the amp if it has a problem - the parts are not that expensive and he could likely repair it in an hour. And I’m sure he would not risk ruining his reputation.
If he’s unresponsive, most likely it’s because he’s had some personal issues - since it seems inconsistent with his past behavior.
If I were you I would take the amp to your local electronics repair shop and have them test it, before proceeding with other action. That’s the only way you can verify whether it has an issue, or not.
If you can confirm it has an issue, I’d be surprised if he won’t repair it without charge.