Korg HA-S Nutube Headphone Amplifier Kit

While compact and user-friendly, the HA-S Nutube Headphone Amplifier Kit delivers high-quality, amplified sound that you can build yourself. This innovative DIY kit, equipped with a Nutube, allows you to experience superior audio quality anywhere, without the need for soldering. Ideal for both beginners and seasoned DIY enthusiasts, the HA-S offers an easy and enjoyable assembly process.

This headphone amplifier kit is designed to provide an authentic vacuum tube sound, beloved by audiophiles. The Nutube, a revolutionary, fully analog vacuum tube developed by Korg Inc. and Noritake Itron Corporation, operates as a complete triode tube. It effectively generates the rich harmonic characteristics and response of traditional vacuum tubes, but in a more compact, stable, and energy-efficient manner.

The HA-S Nutube Headphone Amplifier Kit features a transparent case that showcases the glow of the tube, adding a visual element to your audio experience. Its energy efficiency is notable, with a DC to DC converter powering the Nutube's filament. This design consumes less electric current, allowing for extended battery life compared to other vacuum tube amplifiers.

The HA-S also includes a special NFB (Negative Feedback) switch, offering the flexibility to choose between a high fidelity, pristine sound or a warmer, harmonically rich sound. The two included OP amp options for output, the premium audio-oriented "MUSES01" and the industry-standard "NJM4580", both from JRC, can be easily replaced, allowing even the most discerning audiophiles to customize the sound of their HA-S to their liking.

For those who wish to further personalize their amplifier, circuit diagrams are readily available, making it simple to modify discrete components and create a unique headphone amp that matches your desired tone and performance. With the HA-S Nutube Headphone Amplifier Kit, the possibilities for sound customization are truly endless.