I don't know what to tell you. Excellent speakers designed for conventional speaker cabinets are widely available, but high quality headphone sized speakers I know of no source for.
The highest quality headphones you can buy have the finest sound you will ever get from any headphones. Hence the best good quality speakers that you can get into headphones have already been invented - if you've got the money.
Bose, Incorporated makes Bose speakers. They are a privately-owned company. In addition to making speakers, they also make headphones and home entertainment systems.
Bose surround sound speakers are used to enhance TV watching or music listening experience. The speakers are designed to give a richer, truer quality to the sound, making the experience more enjoyable.
You can go wireless, but you will have to buy wireless speakers. There is no current way of upgrading from wired to wireless and keeping the same speakers. The only way I can imagine is to buy some wireless speakers and then dismantle those and add the pieces to the old wired speakers, the ideal outcome, making them wireless and using the same good quality speakers that came with the stereo.
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No, Beats by Dr. Dre headphones aren't and never were made by Apple. Apple sells Beats by Dr. Dre headphones but that is all. Monster used to manufacture Beats by Dr. Dre headphones but recently their five year contract ended and Beats by Dr. Dre is making their headphones independently.
The best reviews of noise reduction headphones on CNET is the PSB M4U 2. These headphones are good in that they have comfortable ear pads, a long lasting battery, and produce great sound. The only bad thing about them according to CNET is that they are more expensive compared to similar products.
After the purchase of stereo speakers & headphones, you have to find ways of how to maximize their performance. Premium sound is more costly and you must spend some money on top of your budget so as to get sound that is of good quality. This does not mean that a sound system that costs a moderate amount cannot provide a performance that is satisfactory. All that needs to be done is to set the stereo speakers that are placed in the listening room in a proper way. The ways that you can use to have the stereo speakers providing the maximum performance are:1. Right positioning of stereo speakers The speakers should be placed in the right position where they can produce good base response and also highs and mid range that are at good levels. Different rooms have different modes resonance. The low frequency or standing waves amplify or decrease depending on the width, height and length of a room. The result of this is heavy echoing sound and low sounds. The stereo speakers should be positioned in a manner that will not cause diverse room resonances. Proper placement creates great sound and image as it reduces the reflections from walls or other surfaces. Placing the speakers in a right position does not cost you a lot. It just needs patience. When the right position is obtained, the sound that is obtained from the stereo speakers will be maximized.2. The right room and good acoustics Good acoustics in a room can be crucial in the creation of good sound. Rooms with various surfaces that are hard like tiles, high ceilings or glass do not make a good environment for listening. Such rooms cause more sound reflections. These reflections end up making the highs and mid ranges to sound brash. The quality of base is also poor. The best room to place stereo speakers is that which has no muted and soft furnishings like furniture fabrics, curtains and carpets. Finding the best listening position There is a spot in each room where the sound reception is better than at the other spots. This spot can be determined by establishing the third triangular position. The speaker is the first and the second point. The listener should be at a position that is equidistant from each of the speakers. Setting the volume and bass output helps in improving the performance of stereo speakers & headphones.
Ratio between the frequencies of the speakers
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The best are the Bose brand headphones. They have been making great equipment for a long time. When researching them check for the resistance and the materials used. Also check out the warranty.