Questar Electronic Design (QED) is a compact and versatile control center with functions that go well beyond the usual preamplifier roles of gain, input selection, and equalization. Its tone controls have completely passive circuits followed by an “op-amp” gain stage. The phono-preamplifier section has direct-input coupling from the cartridge. There are two pairs of moving-magnet (MM) phono inputs, each with a lever switch that selects an input capacitance of 100, 200, or 300 picofarads in parallel with a fixed resistance of 49,000 ohms. A fourth position changes the gain and input resistance for a moving-coil (MC) cartridge.

Original manual.

$450
Six month warranty