Musical Paradise MP-301 MK3 Mini Tube Amplifier with Headphone Output (Deluxe Version) Single Ended Class A 7W/Channel Tube Amplifier Built With High Grade Genuine Parts Fully Gold Plated PCB Drive Both Speakers & Headphones Supports 6L6 (6P3P), KT66, 5881, EL34, KT77, KT88 and 6550 (Plug & Play)