Review on Hi-Fi 3.5mm Headphone Extension Cable 2-Pack - Oldboytech [3.3ft/1M, Nylon-Braided] Male to Female AUX Extension Cord for iPad, iPod, Speaker, Smartphone, Tablets & More by Derrick Wilson

If you like accurate sound and have a QP2-R player and headphones like the RHA T20 or Campfire Solaris, pull it on I don't like this cable. Well built but sound is my top priority and this cable reduces overall dynamics, shapes the frequency spectrum by clipping high frequencies and bass dynamics are weaker when other products in the playback chain are accurate. If you have a player or headphones with the opposite sound character, you will probably like this product. If your player has tight bass and too much treble information (which many do) you'll probably get a good balance of sound with this cable and save yourself some money by not updating the rest of the playback chain. You can fix sound quality problems with a player, nozzles, or an extension cord. Try this first and then maybe save some money if you want accurate sound and don't have the budget to upgrade the entire chain.