I have been through numerous headphones and and headphone amps but all at the lower end, price wise.
I have ended up just using a Zoom B1on. Tuner, battery powered, light but sturdy. However it isn't walk around the house naked portable. I'd like to find an option like the amplug which didn't disintegrate the first time it suffers a mild trauma, and which didn't hiss like a pressure cooker.
I don't use effects when I work with headphones on which may be why I don't find the Zoom noisy as others do.
Ideally I would like something that slipped into the wireless transmitter pouch on my strap but it's not a huge deal for me to set up the Zoom for silent practice.