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AT33 Portable Single-Channel EMG
AT33 Portable Single-Channel EMG

AT33 Portable Single-Channel EMG

Autogenics' Advanced Technology instrument. With its ON-BOARD MICROPROCESSOR, the AT33 combines ease-of-use with powerful data collection capabilities.

What Can Our AT33 EMG Do? Everything.

  • Calculate and display summary statistics.
  • Time period integration (TPI).
  • Extremely high signal resolution.
  • Autoranging display from 0.01 to 999

Price: $850.00


The AT33 EMG's instrument controls are at your fingertips. Simply press the desired button to change a setting, record or display session data, or select a feedback option.

Statistical Capabilities

All AT series instruments from Autogenics have BUILT-IN statistical analysis capabilities. Simply press the AT33 EMG's Statistics button when you're ready to begin collecting data. Press it again at the end of the session to display the session mean, max., min. and SD.

Exclusive TPI

The unique time period integration (TPI) feature lets you select whether the numeric display provides feedback in real-time or updates only once, every 1, 2, 4, 10 or 60 seconds with the mean EMG for that time interval.

Using TPI makes TRAINING PROGRESS CLEARER and documentable (through the manual recording of data).

Superior Feedback

Audio: Long recognized for quality audio feedback, Autogenics' AT33 EMG audio selections include integrated clicks, a continuous tone and a melodic piano scale. Audio feedback that quickly and CLEARLY CONVEYS CHANGES in EMG activity.

Visual: The AT33 EMG features two visual feedback selections:

1. an LED numerical display, and
2. an LED lightbar (engineered to simulate analog meter feedback).

Sensitive & Accurate

The AT33 EMG has AMAZING SENSITIVITY. It is capable of accurately displaying EMG changes of 0.04 microvolts or greater.


The AT33 EMG is designed to meet/exceed the electrical and safety standards specified by UL 2601, IEC 601 and CSA 871.

Visual Feedback

Display Options: Numerical LED + Lightbar, Lightbar only, Numerical LED only, A/B Ratio

Numerical LED Displays: Three red digits, 0.5" high

Numerical LED Range: 0.01 - 999 microvolts, auto-ranging

TPI (Time Period Integration) Settings: 0.5, 1.0, 2.0, 4.0, 6.0, 10.0, 60.0 seconds

Lightbar: Three color, 15 segments (7 green, 1 yellow, 7 red)

Lightbar Scale Factor: Logarithmic scale corresponding to threshold setting

Audio Feedback

Tones: Piano, Continuous, Integrated clicks

Volume: Levels 0 to 7, 4 is the default

Audio Provided: Continuously, Above or Below Threshold


Statistics Acquired: Min., Max., Mean, SD

Sampling Capacity: 64,000 data points per session


Sampling Capacity: 64,000 data points per session

Resolution: 0.04 microvolts

Bandpass: 32-220 Hz (3 db)

Common Mode Rejection: 140 db

Differential Input Impedance: 2400 megohms

Input Noise: 0.3 microvolts

Sampling Rate: 8 Hz (every 0.125 seconds) of VRMS

Leakage Current: In compliance with UL 2601 specifications

Audio Output: 3.5 mm stereo earphone jack, (mono output)

Analog Output: Linear 0-3 volt DC signal, compatible with most computer interfaces

Line Power Input: 120 volt, 60 HZ, 220 volt, 50/60 Hz

Battery Longevity Rating: 10 to 12 hours continuous use

Battery Recharge: 16 hours maximum with built-in overcharge protection

Dimensions & Weight: 2.5"H x 7.7"W x 5.3"D; 1 pound 5 ounces





UL isolation adapter


Installed Ni-Cad rechargeable batteries


6-foot EMG sensor cable


Leather strap for ambulatory use


Quick-Stick pre-gelled, disposable EMG electrode sets


Carrying case


Owners manual

Warranty: 1 year parts and labor on instrument; 90 days on accessories, 3 year extended warranty available.

Indications: EMG feedback is indicated where general relaxation training is desired.

Contraindications: There are no known contraindications with the AT33 EMG for the purpose of general relaxation training.

NOTE: No warranty or claim is made regarding the efficacy of products in clinical use, but only with regard to electronic specifications, which specifications are subject to change without notice. Prices and specifications subject to change without notice.

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Price: $850.00

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