Korg HA-S Nutube Headphone Amplifier Kit - Long & McQuade Music Educator Site
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Korg HA-S Nutube Headphone Amplifier Kit

Departments > Guitars > Pedals & Effects > Korg > HA-S Nutube Headphone Amplifier Kit
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The HA-S is a Nutube-equipped DIY Headphone amp kit that will let you enjoy the highest quality audio anywhere. No soldering is required, so even if you are new to the world of DIY, you will be able to assemble the HA-S to add a warm, analog tube-driven signal boost to any sound source in no time!

Built-in Nutube
Nutube is a new and revolutionary fully analog vacuum tube developed by KORG INC. and Noritake Itron Corporation. The same as a conventional vacuum tube, Nutube is constructed with an anode, grid and filament, and operates as a complete triode tube, effectively generating the response and same rich harmonic characteristics of conventional vacuum tubes in a more compact, stable and energy-efficient way.

The transparent case of the HA-S delivers a glimpse into this technology; allowing the glow of the tube to be visible at all times.

Sound possibilities
The HA-S has a special NFB (Negative Feedback) switch, that allows you to choose from a high fidelity clean and pristine sound, or a warmer, more harmonically rich sound as expected from a vacuum tube.

For advanced users who want to customize their amplifier even more, the circuit diagrams are readily available, making it really easy to change discrete components and make your own and unique headphone amp matching your desired tone and performance -, the possibilities are endless!

Vacuum Tube: Nutube 6P1
Connections: INPUT/OUTPUT stereo minijack
Controls: volume, internal NFB (Negative Feedback) switch
Output impedance: 10Ω, recommended load:15Ω or more
Power: 2 alkaline AAA batteries
Autonomy: approx. 9 hours
Dimensions (W x D x H): 111 65 29mm
Weight:110g(without batteries)
Included items: manual
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