Pro

• No more hum since the use of separating filters and no loss of recording quality.

Contra

• Makes the hum audible in turntables
• The sound actually becomes muffled
• Completely swallows up the low frequency range on records
• Expensive
• Makes just as little as the cheapest separating filters from other companies
• Poor instructions
• No cable included
• Does not help! Not recommended for hum loops on audio equipment.
• Useless device