I have had a portable headphone amp, the FiiO E6, for two years and eight months.

https://www.amazon.com/E6-Portable-Audio-Headphone-Amplifier/dp/B005HJWWW8
I think it's starting to go out on me.
Time to buy a new amp! 
I'd like to spend about $30 or less.
It has to be USB powered, it has to have volume control, and I would like it to last longer than my current model.
What should I get?
power911
(power911)
2
Do you need the portable amp form or you’re ok with desktop type?
Can’t really avoid fiio if you’re on a budget
Fiio A1 or the K1 is within your reach. I like the K1 due to the DAC feature but it is just that. The K1 has no battery pack in it.
There are quite a number of chinese amp out there that will drive well with no noise. Just that the sound you get is a gamble like any chinese product with no brands
I want a portable amp.
The FiiO A1 looks good, and the price is right.
Alright, I did research on Amazon, and the FiiO A1 looks the best.
(That's not too surprising since it's basically a newer version of the E6.)
I have read that the A1 doesn't amplify very much, but I don't need it to do so.
Looks like I'm set. 
eas
(eas)
5
What kind of headphones do you have that you expect adding another device in the signal chain is going to improve the output
?
My headphones are JVC HA-S680's:
https://www.amazon.com/JVC-HA-S680-W-White-phone-Japan/dp/B00FS0DFTK
I'm not trying to improve the sound quality.
I just need to increase the volume somewhat.
EDIT: I have desktop speakers hooked up to my TV, and the volume going to the headphone jack is anemic.