Desktop audio solutions for headphones take all forms and serve all matter of connectivity in recent years. Attempts at owning the personal audio space that lives and breathes around the computer workstation have proven to be a good solution for many manufacturers. The one-case approach of course reduces unwanted clutter and promotes convenience in a place where the attribute is most needed. Questyle’s headphone products enter the arena with plenty of audiophile-requested features and a heavy bias towards sound quality thanks to its solid-state current-mode amplification. This “current mode” goodness permeates almost all the company’s offerings, including the portable QP1r portable player. It is also a driving feature on the newest member of the lineup, the CMA600i ($1,299).