Blue New - Blue Microphones Mix-Fi Powered High-Fidelity Headphones with Built-In Audiophile Amp 50mm Fiber-Reinforced Dynamic Drivers Built-In All-Analog Audiophile Amplifier Ear-Shaped Ear Cups for Greater Comfort Multi-Jointed Design Adapts to Head Size Adjustable Tension Knob for Headband Over-Ear Design for Noise Isolation Passive, Active, and... $147.00 Was: $281.89 Was: Add to Cart