The analogue system used before digital surround sound came to prominence, called quadraphonic sound, uses four speakers to create a surround sound effect. While deemed a commercial failure due to cost issues and disagreements about system configurations between manufacturers, quadraphonic enthusiasts consider the sound systems that use this technology superior to anything on the market. Therefore, many audio enthusiasts do not hesitate to buy any products that fit within this niche. Finding this type of equipment can prove a challenge, though, since production ceased in the 1970s. Luckily, shoppers can find a wide selection of quadraphonic products on
Fully Discrete Sound
True quadraphonic sound results when a sound system separates the sound from a four-channel source that passes through a four-channel reproduction system, usually a receiver, to four
. The listening area for the best sound production lies at the centre of where the sound from the four speakers meets. Headphones defeat this effect, only separating the sound into two channels, and so enthusiasts of quadraphonic sound avoid using them. Shoppers should learn what certain terms mean when buying quadraphone products, including the term fully discrete, to allow for the full understanding of all options. If shoppers have any questions about a quadraphonic product, they can always ask the seller.
Find the Best Quadraphonic Products on eBay
Shoppers can find a variety of quadraphonic products on
. These include all of the various receivers, turntables, speakers, and sound storage mediums. To find the best results for quadraphonic items, audio enthusiasts can enter keywords in the Search bar located on any eBay page. This pulls up results and categories that allow shoppers to refine their search further. When buying quadraphonic products, shoppers should always check the seller's feedback rating to ensure that any items they buy perform as described. By using top-rated sellers, shoppers can ensure the best eBay shopping experience. In addition, they can enjoy free shipping which many offer.