Sony EP9ES Preamplifier/Digital Signal Processor £40 ONO .

This is a Sony EP9ES Dolby Digital surround sound processor / preamp that was part of the SONY prestigious ES Line. As a developer and champion of digital audio, Sony was at the forefront of the technology and was issuing State Of The Art digital products in the late 80s and early 90s. This processor is one of those products. Featuring: > 2 CH operation or Dolby Digital 5.1 channel operation with multiple, customizable synthetic surround modes. > Comprehensive bass management with user selectable high and low- pass filters at 60/80/100/120/150/200 hertz, separately adjustable for the front, middle and rear channels. > 2 bands of quasi parametric EQ for all channels except .1 subwoofer. 21 shelved turn-over points in band 1 from 100hz to 1000hz and band 2 from 1000hz to 8600hz. Both bands + / - 10db of adjustment in .5 db increments . > All functions, including volume, EQ and all channel balances, are easily remote controllable from the listening position. The unit is easy to operate and you don’t have to be a rocket scientist to figure it out. It has 4 digital and 1 AC3 inputs and analog pass through. The volume control does not affect the analog pass through signal. The unit is a great DAC and it can also can be used in 2 channel mode which switches off all surround processing, but still retains the remote control of the volume, balance and EQ functions. All processing can be switched off for purist 2 channel listening.