Please see their web site for more info as per the following: http://www.coda-continuum.com/home/index.html The CODA Legacy The genesis of CODA Technologies began in March of 1985. Originally incorporated as Continuum Electronics, an independent design and engineering consultancy, the company was founded by Eric Lauchli, B.D. Dale and Lorin Peterson, former members of the R&D and technical support staff of the Threshold Corporation, then an innovative leader in high-performance solid state audio electronics. In 1989, Continuum was renamed to the present CODA Technologies, Inc., and began producing its own line of state-of-the-art, reference-quality audio electronics. The first product bearing the CODA badge was the FET Preamplifier 01. This design path culminated in the innovative System 100 and System 200 amplifier systems which utilize separate chassis for voltage gain and current stages providing superior isolation of the sensitive voltage gain circuitry from the harsh environment created by high-current output stages. In September, 1995, the Continuum Electronics name was resurrected as a sister company to produce a line of affordable, high-performance, high-value audio components. Today the Continuum line comprises the Window remote-control preamplifier, the Stage two-channel amplifier, the multi-channel 4.3.2 Theater amplifier and the Unison two-channel integrated amplifier. Collectively both companies are known as The Continuum Group, however most simply refer to us as CODA. We are a mission-driven organization singularly dedicated to the advancement of state-of-the-art audio reproduction technology. In addition to producing two separate lines of high-performance audio electronics, CODA has an ongoing research and development relationship with the engineering staff of Legacy Audio, who produce some of the finest loudspeaker systems available. On behalf of the entire CODA staff, thank you for your interest in our company. Coda has gone through lots of changes and you will need to decide if the reduced price and associated sound quality is something you want to invest in. If it was my money, I would look at something else.