Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon Korg NuTekt DIY Headphone Amplifier HAS by Korg Save Liquid error (snippets/product-badge line 32): Computation results in '-Infinity'% $499.99 | / 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Add to cart Spinner icon Notify me when back in stock Email address Email me when available Vacuum Tube: Nutube 6P1. Connections: INPUT/OUTPUT stereo minijack. Autonomy: 9 hours. Power:2 alkaline AAA batteries. Could be easily customized, circuit diagrams are available.