Headphones / Earphones
HEADPHONEAMP
headphone amplifiers for audio
KORG/Nu:tekt HA-S ヘッドホンアンプ DIYキット

KORG / Nu:tekt HA-S ヘッドホンアンプ DIYキット

KORGお問い合わせ窓口

Nu:tekt HA-S is a DIY kit that allows you to create your own high quality headphone amplifier with Nutube. No soldering required, so even beginners can easily do it. You can assemble it right away and enjoy your favorite music with high quality.

■ Make a headphone amplifier with your own hands
・The Nu:tekt HA-S Headphone Amplifier DIY Kit does not require soldering and you can easily manufacture a headphone amplifier.

■Nutube installed
・Nutube is a fully analog, next-generation, high-performance vacuum tube jointly developed by KORG and Noritake Electronics.

■ Energy saving
・By using the DC-DC converter, the filament power is efficiently converted from the battery. You can drive a Nutube by creating a line voltage of 26V with only two AA batteries, and realize a rich and authentic vacuum tube sound!

■ Possibility of timbre
・HA-S is equipped with an NFB (negative feedback) switch. You can switch between clean and clear sound and warm sound like a warm vacuum tube.
・When the negative feedback switch is OFF, the circuit has no feedback, the harmonics of the Nutube (triode) are enhanced, and a rich sound with a stronger vacuum tube color is generated. Turning the NFB switch on will reduce distortion and overtones for a more “high fidelity” sound.

・2 types of output operational amplifiers are included to change the sound. Two types are JRC's premium audio-oriented "MUSES01" and the orthodox "NJM4580". These can be easily replaced with the IC socket.

・The circuit diagram is included for customization. If you change the parts to parts with higher sound quality, you can easily create your own headphone amplifier that matches the desired tone and performance.

■ Vacuum tube: Nutube 6P1
■ Connection terminal: INPUT/OUTPUT terminal Stereo mini phone jack
■ Control: Volume, NFB switch (internal)
■ Output impedance: 10Ω, recommended load 15Ω or more
■ Power supply: 2 AA alkaline batteries (sold separately)
■ Battery life: About 9 hours (when using alkaline batteries)
■ External dimensions: 111 (width) × 65 (depth) × 29 (height) mm
■ Weight: 110 g (without batteries)
■ Accessories: Manual