Could I use this product as speakers for my PC? Do I need any additional items?

How loud the speakers could produce the sound? How is the loudness compared to a HDTV's speaker?

I will really appreciate any helpful answer to this as I'm really interested with the product.

You do realize these are earbuds, right? That picture is extremely misleading because it looks there are speaker cabinets there and the panasonic product is just headphones. They will work and should be quite loud judging by the sensitivity spec. In fact you will need to be cautious to unsure they are not set too loud by default or you could get a very loud and painful surprise. Also notice the max power. They won't be hard to blow up from being set too loud depending on the power of your soundcard. Jut be sure to match thwe specs of you soundcard to those of these earbuds. It is more common that headphones for PCs that have soundcards without real power amps to use headphones with an impedance rating of around 64 ohms. 16 ohm earbuds like these are designed for ipods, iphones and the like that have actual power amplifiers of a few watts.

The nice thing is that it is easy to connect your Line Out of your PC's sound card to any audio amplifier/receiver to drive whatever speakers you want including these earbuds.

Firstly thank you for your answer. I really appreciate that.

Really? But look at this. The package says that this product is two in one which I perceive as speakers and earbud in one package.

You can use them on your PC because they have standard plugs for the normal speaker jacks.

As far as loudness and sound quality, that's up to you to judge. There are amplified speakers on the market which can get you additional "loudness". Everyone has a different perception of sound quality.

10 Hz to 25 kHz does cover the dynamic range well enough.

"Cheap" anything, is cheap. It is economical, but not necessarily high quality. The mounting, the physical enclosure, the quality of the manufacturing, the wiring used, and so forth will govern the overall quality and durability of any given product.

Thank you! Your answer is really helpful!

But the main point is still whether I could use the speakers for my PC.

Are you sure the speakers has the standard jack? I mean I fear that the connector mentioned in the specs is for the earbud only.

If you sure then I will buy the product.

"Connector : 3.5mm(miniplug diameter); "

It appears that the company may package differently for different markets/countries. Some sites show a package with only the earbuds but your original link and the new one show small enclosures included. Since packaging does often vary it is remotely possible that what you get may have a non-standard plug. It is unlikely but even if that occurs, the 3.5mm plug is so universal that adapters are certainly available. You will not be stuck unless it's "loud" isn't loud enough for you but the earbuds make even that unlikely. They should work reasonably well and from what I've read of the reviews most people seem happily surprised.

Thank you for the reply.

I've bought the product and I'm pleased.

But I don't understand why the speakers' loudness is different with every devices it connected. I've tried to connect the speakers to a HDTV, a smartphone, and my PC. The loudest is when connected to a HDTV. Second is smartphone. And the last is my PC (the sound is really quiet).

I use this speakers as my PC speakers. I connected the speakers to HDTV (I use the HDTV as my PC monitor).

These are the specifications of the speakers: https://drive.google.com/file/d/0Byh...ew?usp=sharing.

if i understand the product description correctly, they are unamplified and thus at the mercy of the line level of the device into which you are plugging your speakers,and no two devices are built alike.

Just as how fast your car can go is determined by it's weight (and to some extent air resistance) and the horsepower to drive it, mitigated by what gear you are in, sound systems basically consist on the "business end" of an electomagnetically excited cone driven by electronic power. The electomagnet is a coil of wire that presents a specific resistance load which is called "impedance" in a circuit where the frequency changes as it does with sound. This load is powered by electronics referred to as a Power Amp which normally converts high voltage, low amperage alternating current into lower voltage, higher amperage alternating current adhering to Ohm's Law

Since headphones are unaffected by distance to your ears and commonly shut out external sounds they require very little power and can possibly be driven by fractions of a Watt(power) but the power they receive is affected by the nature of the power amplifier that drives them and how it can operate into the headphones Impedance. The above formula for power shows that if you halve the impedance you double the power assuming the Power Amp is capable of driving that lower load. Power in wattage costs money and creates heat so many devices are made that are incapable of driving low impedances. Thus unpowered speakers of any kind will display differing volume levels depending on the design and capabilities of the power amp.

Both are extremely pitiful.

My logitech speakers, not even the best speakers, 5 watt RMS, 10 watt total peak power. Yours: 100mW and 400 mW.

My panasonic headphones (RP-HTF600-S), which are excellent for the price: Max input (mW) 1500. Yours: 50 mW. True that they are earbuds, but just terrible.

@frieza Thank you for the answer.

@enorbet Thank you for the detailed explanation.

@metaschima What does the max input affect to? I don't understand why it is pitiful that the max input is low.

If I may comment and paraphrase the old saw of "beauty is in the eye of the beholder" I'd say "pitiful" is subjective and directly proportional to the experience of options and is also dependent on the owners pocketbook and experience at choosing quality gear as well as justifying it. My PC sound system is worth a little over $3400.00 USD employing just shy of 1000 Watts, 2 x 12 inch subwoofers and 2 x midrange/highs boxes employing 8 inch cones and Strontium ribbon tweets and beginning with a $120.00 USD semi-pro sound card. After hearing a system like this there is very little that isn't "pitiful" by comparison especially for immersive or critical listening. However I also have a system with an SBLive soundcard and a set of Labtecs with a powered 8 inch subwoof and satellites that cost $40.00 USD that is pretty darned nice for casual listening and some movies. Obviously however given the choice. I'm going for the big one. It is absolutely orgasmic.

I'll re-quote myself from earlier:The original link goes to a site named "Gadgets Guru" and the page name for the item states "Cheap Panasonic Headphone"

Please realize that this is a general purpose product. If you desired something of very high fidelity and excellent sound quality, then you really should evaluate more premium quality products and examine the acoustical qualities of those products with more effort. Things like searching for reviews, both good and bad, and becoming versed in the technologies of those products so that you understand where something is a simple sales angle versus statements which are more accurate descriptions of a high quality product.

While it is a good idea to attempt to evaluate the integrity of any given purchase, I think it is too far reaching to expect that some general purpose, passively powered speakers, are going to give you concert hall quality.

Also bear in mind that the higher you go in designing for maximum fidelity, eventually you'll reach a point where the local environment comes into play. Such as the room the system is within, and whether the acoustical environment of that space can vary greatly over time. For instance, auditoriums and concert halls are designed to aid to the acoustics of those spaces and are part of the overall sound design of those areas. Simply having a computer residing in a general location and a few speakers sitting nearby may not provide the sound experience you're seeking.