Nikko Preamplifiers

• BETA I
  1977-82 $350. all FET circuitry
• BETA II
  1978 $240.
• BETA III
  1979 $420.
• BETA V
  1979 $750.
• BETA 20
  1981 $300. MC head amp, FET power supply
• BETA 30
  1982, $280, 2 tone controls, dual input signal selector, 1 sound processor input/output, MM-MC, 8 lbs.
• BETA 30 II
  $320.
• BETA 40
  1981, $470. MOS-FET, MC head amp
• BETA 50
  1982, $480, dual input selector, 3 sound processor input/outputs
• BETA 50 II
  1985, $420, MM-MC, 11 lbs.
• BETA 400
  1988, $440, invert polarity option, MC input, CD direct input
• BETA 600
  1988, $600, invert polarity, MC input, 2 record outpt selectors