New Hagerman Technology Archiver - JFET Variable Equalization Phonostage

Hagerman Technology the ARCHIVER is a very flexible phonostage designed to replicate any known equalization curve (36 in total), from 78rpm shellacs up to the modern era. "Circuitry is fully balanced using precision matched JFET pairs ($100 my cost) for amplification. Equalization is split-passive, with no feedback employed anywhere for a more natural sonic presentation. Two inputs allow selection between mono and stereo configurations. In addition to the TURNOVER and CUT equalization controls, the ARCHIVER accommodates any cartridge from MC to MM with variable LOADING and GAIN. Output is both RCA and balanced XLR in either PHASE."


  • 47, 100, 220, 470, 1k, 47k ohm input impedance
  • 46, 54, 58, 62, 65, 68dB gain
  • 220pF loading
  • 25Hz to 45kHz bandwidth (-3dB)
  • ??dBA ref 0.5mV signal-to-noise 
  • 0.04% @ 0.5Vrms distortion (1kHz)
  • 4Vrms @ 1% overload (1kHz)
  • +/-1dB equalization
  • 14 x 4.5 x 4 inches
  • 2 pounds
  • 24Vdc @ 76mA