Monster has quite a few unreleased headphones under its belt that were kept under wraps for months until now. We managed to discover two unreleased and unannounced headphones that are said to see the light of day this year. Last time is was the Beats Executive headphones, and now Diamond Tears and Tranquility headphones. Apparently Monster has collaborated with JYP Entertainment, a popular Asian pop record label to introduce a pair of noise-cancelling on-ear headphones called Diamond Tears. These are as over the top styled as Monster's Tron headphones with a unique, jewelry-like clear crystal design with tangle-free cable, foldable ear cup design and are said to have super accurate and detailed sound reproduction. 

Next up is Monster's titanium colored Tranquility headphones that have an over-ear design and described to have superior audiophile sound quality. The Tranquility headphones feature sound-isolating ear cups, dual input and output plugs, external active noise-cancellation with a built-in rechargeable battery and a fold flat to fit inside the included carrying case. Obviously we don't have an official release date, but we do know that the Diamond Tears headphones are expected to be sold at $250 while the Tranquility headphones will sell for $400.