Heathkit IM5238 AC Voltmeter measures from 1 millivolt to 200 volts AC in 12 ranges.
It will measure -70 dB to +40 dB in 12 ranges in 10 dB steps with a variable offset.

Voltage Range (full scale):

1 millivolt to 300 volts AC, 12 ranges

Decibel Range:

-70dB to +40dB; 12 ranges in 10dB steps, variable offset

Input:

10 megohms, 30 picofarads, negative input grounded to chassis

Frequency Response:

Voltage Ranges:
      10Hz to 1MHz +/-2dB
      10Hz to 500kHz +/-1dB
Linear dB Ranges:
      10Hz to 250kHz +/-1dB

Outputs:

DC proportional to input volts: 1 volt full scale
DC proportional to log of input volts: 3 volts full scale
AC amplified signal: 1 volt peak, full scale
All output Impedances: 1 kilohm or less

Scale (mirrored):

0 - 10 volts
1 - 3.4 volts
-20 to +10dB

Accuracy:

All Voltage Ranges: +/-4% of full scale at 1kHz plus accuracy of calibration standard
All dB Ranges: +/-0.5dB at 1kHz plus accuracy of calibration standard

Operating Temperature Range:

+10 degrees C. to +40 degrees C.

Power Requirements:
100-135 VAC, 200-270 VAC, 50/60Hz, 20 Watts