quote from eBay page:
The original Echosonic guitar cabinet used on most all the live and studio guitar work during Elvis Presley’s career (1955-1957).
You can hear it on all the hits from the early years including: Mystery Train, That’s All Right, Heartbreak Hotel, Blue Suede Shoes, Hound Dog, Don’t Be Cruel, Love Me Tender, All Shook Up, and more.
The Echosonic was designed and hand-built by Ray Butts. While only 68 ever being built, the Echosonic found a unique place in history with a built-in tape echo (loop) unit. …