Below are excerpts from the review:
The ddHiFi DJ44MOJO is a meticulously crafted adapter with the highest standards that seamlessly complements the aesthetic of the Mojo 2. It effectively transforms the two 3.5mm sockets into a single 4.4mm socket. This adapter is both lightweight and compact, ensuring portability except of premium aesthetics while maintaining absolute sonic transparency, thereby preserving the original sound quality of the Mojo 2. For just $52.99 this is by far the best looking and well made audio adapter that you can buy to add 4.4mm connectivity to the Chord Mojo.
From:Ichos-reviews