Similar to: Woo Audio WA6-SE 2nd Generation Headphone Amplifier

This premium headphone amp kit builds upon the beloved Crack circuit with an upgraded power supply and integrated Speedball. It offers enhanced dynamics and resolution, perfect for high-impedance headphones, but requires some building experience to unlock its full potential.

This tube amplifier delivers the raw, 7-watt muscle needed to tame even the most stubborn planar headphones. You sacrifice the convenience of a solid-state footprint for a rich, analog warmth that brings clinical, high-impedance gear to life with genuine musicality.

This handcrafted tube amplifier delivers a rich, liquid sound that modern solid-state gear simply cannot replicate. While the OTL design requires a bit of patience for tube rolling and maintenance, the reward is an unmatched, customizable intimacy that breathes new life into your favorite headphones.