I had a Haley in my home for some time and found it quite excellent with lowering noise floor and improving the timbral qualities and overall sound reproduction. After trying several PLCs, I ended up with an Exact Power EP-15A, as it worked a bit better in my system, but it was almost twice the price of the Haley.
All in all, given the prices of comparable products, IMO the Haley is a great product at it's price and well worth an audition.
All in all, given the prices of comparable products, IMO the Haley is a great product at it's price and well worth an audition.