iFi iDefender+ USB Audio Ground Loop Eliminator (Type C > A)

Very affordable Compact noise elemination, that works well for audiophile phone listeners.While there are better products in the market 3 to 4 times the price of ifi, this one beats the others hands down in value for money. It's better than the audioquest jitterbug as well, which is warmer sounding than the ifi, as the Isilencer + the idefender together gives a very low noise floor in you misic listening, with added dynamics and a slightly enhanced sound stage.Works extremely well on phones. Also does a decent job on DACs, DAPs and CD players of the are low to mid level. On hi-end products, the better and more expensive ifi products work well.I absolutely love the idefender + Isilencer on my phone and A&K DAP.