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KORG HA-S Nutekt Diy Headphone Amplifier W/ Vacuum Tube & Battery Power

$499.99
In Stock
SKU
215758
  • Catalog #: HAS NUTEKT






Attention! Store stock availability may not be up to date and may be “open box” inventory.      

  1. Phone your preferred store Store to confirm availability and condition.      
  2. Contact your preferred store Store to confirm availability and condition.      


Vancouver Store
728 Granville St.
Vancouver, BC, V6Z 1E4
Phone Store 604-685-8471
  Contact Store Low Quantity

Coquitlam Store
2560 Barnet Hwy.,
#116 Coquitlam, BC, V3H 1W3
Phone Store 604-941-8447
  Contact Store Out Of Stock

Langley Store
19638 Fraser Highway
Langley, BC, V3A 4C5
Phone Store 604-532-8303
  Contact Store Out Of Stock

Richmond Store
#150-3631 No. 3 Road
Richmond, BC, V6X 2B9
Phone store 604-273-6661
  Contact Store Out Of Stock

Victoria Store
#105-2401D Millstream Road
Victoria, BC, V9B 3R5
Phone Store 250-383-5222
  Contact Store Out Of Stock

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A Pristine, Compact Sound Amplifier You Build Yourself

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!

Build your own Headphone amplifier

This DIY HA-S kit allows you to build your very own Headphone amplifier in an easy and fun way, without any soldering needed. Not only that, it provides the authentic vacuum tube sound that audiophiles know and love.

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. 

Energy Efficiency

The filament of the Nutube is powered by a DC to DC converter, which consumes less electric current and thus allows for a longer battery life than other vacuum tube equipped amplifiers. The design is so efficient that the HA-S can drive the Nutube with a line voltage of 26 V using only two A4 batteries., for a rich and authentic vacuum tube sound.

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. 

When the NFB switch is OFF, the harmonics present in the Nutube (triode tube) will be amplified to create a sound rich in harmonics, warmth and textures. When the NFB switch is ON, the distortion ratio and frequency characteristics will be modified, creating a really detailed and clean sound.

For further sound modification, we have included two OP amp options for the output: the premium audio oriented "MUSES01" and the industry standard “NJM4580”, both from JRC. These can be easily replaced so even the most purist audiophiles will be able to customize and adapt the sound of their HA-S to heir heart’s content. 

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!

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