Memphis Audio Street Edge Series 4 Channel Amplifier We are a Memphis Audio authorized dealer so you get up-to-date, fully warrantied products. Shipping is free to the lower 48 states on everything you order! Solid Performance at an Affordable Price Point Street Edge amplifiers were designed to be affordable without sacrificing performance. The stripped down styling of these amplifiers allowed more resources to be dedicated to achieving solid performance with big power ratings at an affordable price point.