Ed,
If your refrigerator is the only item on that line and you unplug it when youre critically listening I think Id be incline to upgrade power cords. I suggest this because to many times Ive spoken to many audiophiles that use various devices to clean the AC power and in the long run they find out that they have degraded details instead. Dont get me wrong, I have an extensive power filtration system in my home and it works well however the more I experiment the more I find that I like the AC power coming out of my outlets that is only filtered by my 5 KVA isolation transformers.
Im sure there are pros and cons to your question, and the bottom line is you have to try it yourself to decide what works best in your situation.
If your refrigerator is the only item on that line and you unplug it when youre critically listening I think Id be incline to upgrade power cords. I suggest this because to many times Ive spoken to many audiophiles that use various devices to clean the AC power and in the long run they find out that they have degraded details instead. Dont get me wrong, I have an extensive power filtration system in my home and it works well however the more I experiment the more I find that I like the AC power coming out of my outlets that is only filtered by my 5 KVA isolation transformers.
Im sure there are pros and cons to your question, and the bottom line is you have to try it yourself to decide what works best in your situation.