Founded in 1986, Mapleshade began as Pierre Sprey's home recording studio -- affectionately referred to as "Edison's Lab" by jazz great Walter Davis Jr. Our upgrade products were born from Pierre's research to improve the sound quality of his studio recordings and playback, then later adapted for home use. Every Mapleshade product has been painstakingly refined by thousands of hours of ear testing, using our own purist recordings of live music. We take pride in offering quality handmade products that seriously improve the sound of any stereo — as demonstrated by our 30-day money back guarantee.