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Products - Ambco 650A/650AB Pure Tone Audiometer

Ambco 650A/650AB

Ambco 650A/650AB Pure Tone Audiometer

The Ambco 650A/650AB Pure Tone Audiometer is a portable, light weight audiometer that is ideal for schools, family practice or professionals on the go.  The 650AB operates as a plug-in with an included 110 or 220 volt adapter or an optional 9 volt battery.  It has an easy to use tone switch, tone present and patient response indicator, with both steady and pulsed tones.



  • Portable, light weight

  • Easy to use tone switch

  • Tone present indicator

  • Plug-in 110 or 220 volt, 650A

  • Plug-in and battery, 650AB

  • Battery life indicator

  • Five year warranty

  • Extremely accurate

  • Exceeds all specifications

  • Steady and pulsed tone

  • Custom carrying bag

  • Patient response



  • Meets or exceeds ANSI S3.6 1989, (ASA 81-1989) ISO 389-1985, C.H.D.P, O.S.H.A, E.P.S.D.T. F.A.A., Police, Divers, requirements.

  • Frequency Range: 250, 500, 1000, 2000, 3000, 4000, 6000, 8000 Hz Accuracy better than ± 3%, (steady and pulsed tone)

  • Hearing Threshold Range: 0 to 90dB in 5dB steps Accuracy better than ± 2 dB

  • Harmonic Distortion - less than 3%

  • Power: 110-230 VAC, 50-60 HZ UL, C.S.A. approved power supply. Long hour operation on one 9 volt battery (650AB).

  • Total Weight less than 4.5 Ibs (complete with headset, TDH 39 earphones, patient response, audiogram pad and carrying bag.)


5 Year Limited Warranty

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