Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: I have a problem with my 3.5 mm jack on my laptop. Can I plug this into my USB and listen through that?
Document: The HDTV I bought had a headphone jack but there was a loud hum when using it. I bought an RCA to 3.5 mm adapter and used it to run my headphones from the Blu-ray player RCA output jacks, through this amp, and the hum is gone. Makes me smile!
The biggest problem I have with this product is that the output volume isn't significantly louder than the volume you get from the 3.5mm jack in whatever device you are using in the first place. You would think that the amplifier would "amplify" the sound. It works well for my application but again the volume could be louder. I use it in order to listen to the output of a UHF wireless microphone system to be able to monitor a recording live.
Just received my item, works with my dre beats Studio's. The long jack connects with no fitment issues directly to the headphones, and the mini-jack connects to my laptop, ipod, and phone with no problem.Saw negative reviews for this item, and this is why im posting. Everything works for me, i dont see what the big deal is.
I am V.i.P. The current Guinness World Record Holder for longest freestyle rap which lasted 12 hours straight on October 22nd 2010 in Abilene Texas. First off this amp shouldn't be considered an E6 because it's more like a 5 star general at a time of war baby. I love this little sucker. Plug it in any USB to charge and get hours of life for perfect accurate mixing with a setting for regular mid hi and lows. This lil guy is the rock that killed goliath.
The unit is a mighty marvel. I needed amplification for portable earphones. This unit is about 2 inches square and 1/4 inch thick (5 cm square by 7 mm thick). It charges from a USB port with a cable that comes with the unit. You can charge the unit while it is in use or run it for hours on a fully charged battery.There were two male-to-male extensions for the subminiature cable (standard for small earphones).
I've been using this for almost 3 months with a DAC attached to my laptop.I needed an amp because the DAC I bought didn't have any volume controls, so I always have the fiio charging (I never use it portably). I'm fine with the sound, and the sound is definitely better than that of my laptop.The only problem is that I hear very high pitched sounds from my headphones when the amp is charging.
This allows me to listen to movies at louder volumes without disrupting other people.It is nothing fancy and works easily straight out of the packaging. Plug it in with the USB cable to your computer to fully charge it and then use it to bring a signal up to line level.Sound quality is decent to my ears. Certain bassy sounds can get distorted at times. I have not messed with the settings at all so I don't know if this can be corrected or not.
Bought this for my Audio-Technica ATH-M50 the sound quality and output on this little amplifier is really amazing, it pushes so much power into my headphones that I can't listen to them at full power.The only drawback is when you plug this into an active USB port, IE a computer to charge, you will hear a lot of background electrical noise from the computer. Plugged directly into a wall charger it is silent but plugged into a computer it makes a bunch of noise.
This not only makes it's recharge plug and jack less durable, but it also means that you have to be a bit more anal about your recharging config, so you can easily distinguish which USB pigtail goes to which device -- the two standards are not interchangeable. Having to deal with a mix of both micro- and mini- USBs also makes it impossible to use a USB Y-splitter to reduce the need for using two USB ports for your media player/booster combo.
I will see if I experience the same benefits on my Windows phone. I have rated the device at 5 stars because based on the price, the unit is an excellent value. The packaging includes short and long 3.5mm jumper cables , so plug and play. One should clean all connections to facilitate good sound.
Answer: No. the usb is only for charging.