Customer Ratings & Reviews

Replaces Panamax MR4300. AudioQuest PowerQuest 505 my first non-sacrificial power conditioner. Excellent sound. Plenty of space between outlets/inputs for large connectors. Never shuts down. Never needs reset.

I had an old monster line conditioner that finally took its last hit (15) years old. This new one by Audio Quest simply cleaned up my quality of sound to my speakers that was very noticeable out of the gate.It did get even better over a few weeks of breaking it in. Money well spent for protection and power being cleaner and more stable to your components.

[Employee of bestbuy] I recently had a catastrophic surge event that fried my whole house and killed one of the outlets on my wall. The Power Quest 505 did everything I asked of it not only did it save over $8k in audio gear but It fixed all my issues with noise and humming. It also works great with my power amp and subwoofer to give it the power it needs with the high-current outlets, my turntable and cd player with the linear filtraration outlets really gives me piece of mind knowing that they will get clean power all the time. I recently upgraded the power cord from the included PQ-715 to the Blizzard to match the DBS 72 V system that is in my speaker cables. I reused the PQ-715 for my power amp and I am so pleased with the performance of all my Audioquest gear. If you are serious about amazing audio performance and protecting your gear make the investment in the Powerquest 505. If you are running really expensive speakers that want the best performance possible, I would look into the Powerquest 707 to give you the transient power correction and the best sonic performance money can buy.

It works as intended. The unit is very quiet. Lots of space between outlets. I can't speak for an improvement in the picture on my G3 TV, but it sure does look great. There has been an improvement in the sound for sure. There just seems to be more space and delineation between musical notes or spoken words. A good investment that shall last for many, many years.

Huge upgrade for a movie room. It’s a must have! I have no humming anymore and my sound is crystal clear!

Just received item. Seems to be as stated. Replacing Monster Surge protector.

New Technology I didn't know I needed until my Best Buy AV Manager taught me it's importance

Great product. Has enough plugs to manage all my home theater equipment.

Day one after installation I had a power surge situation and I suffered no damage. I am glad for my purchase and I can hear a difference on sound quality. Thank you Best Buy for my Audio Quest Protector and for the Geek Squad support.

Plug whatever you want into it... just not your tongue!