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!

Features

• Nutube is a new and revolutionary fully analog vacuum tube
• Allows you to build your very own Headphone amplifier in an easy and fun way, without any soldering needed
• Powered by a DC to DC converter which consumes less electric current and allows for a longer battery life
• Has a special NFB (Negative Feedback) switch

Specs

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