I didn't want to believe I had purchased a bad quality product, so I tried different solutions like plugging my supply to different wall sockets, checking every patch cable, rearranging my pedals, and making sure the power consumption of every pedal matched correctly with each output, all to no avail, and in the end I noticed even powering different single pedals was enough to cause a loud buzz in my amp

This product works great (although I've only had it for about a week now).

This is a great product

Brilliant product

but I don't trust this product anymore

I recommend this product and will be ordering another unit.

I adjusted my rating from 1 star to 3 stars because even though the product is flawed, their customer service is very good.

Great product and great service!

Perfect product

I highly recommend all their products for use.

Great product

Great product for a fantastic price!!!Update on the supply

Excellent product, excellent service!

I understand products may sometimes be defective, but my problem is with Amazon

Product works great

In short it's a great product on a great budget pricing deal very

I'm happy with Donner and Amazon both for making a good product available at a reasonable price.

In my eyes, if the LEDs don’t work, the product is defective, end of story

I loved this product

Great product.

Very good product.

The manufacturer read the review and set me a new unit at no charge and explained that their product IS isolated but that had some type of product defect

Like many others I just couldn't see myself spending $150-$200 on a power supply and thankfully Donner and some others are producing good products at fair prices to the consumer.

Seems to be a good product so far and money well spent and can't beat the price

Great product and affordable!