Last "affordable high-end" pre-amplifier for Technics before the battery-operated and ultimate SU-C7000.
Nothing completely new here, just the penultimate formula refinement which started out with the... not so successful SU-A4. Not so successful because Technics preamps didn't sell nearly as well as the brand's power amplifiers... Putting video circuits in a dedicated high-end stereo preamplifier never was a good marketing point but so was the trend - and so still is the trend.
Still a fully Class AA circuit with voltage/loads stabilizers and a 4-gang attenuator.

Despite Technics recent disappearance, Panasonic still has very detailed technical pages about the evolution of all of its past preamps and power amps since the 1960s beginnings - for how long ?
Click the "more" button below for a compleat description of the SU-C5000's guts and circuits, taken from the original "900" and "5000" japanese catalog.