SP20 – demo has phono – natural finish
A fully balanced, pure class-A preamplifier that uses no overall loop negative feedback. It has seven levels of voltage regulation, and its line and phono stages each include low-noise JFET inputs and two 6H30 output tubes. The phono stage provides 58dB of gain, which makes it compatible with most low-output MC cartridges.
The SP20’s physical appearance combines old and new. The faceplate with two large knobs evokes the look of the classic Audio Research designs of the early 1970s. There are also controls for input selection, volume, power, mute, and the headphone/speaker toggle. Unlike the ARCs of 40 years ago, the SP20 also has a touchscreen, similar to that found on the company’s flagship Reference 10 line stage ($30,000).