Henry Engineering Stereo Audio Monitor
April 13, 2011
Henry Engineering is introducing the Stereo Audio Monitor (SAM), a digital/analog stereo
level and phase meter. The SAM uses Single Stereo Display technology (patent pending)
to display both channels of a stereo audio signal using one LED meter.
The Single Stereo Display utilizes tri-color LEDs, showing the left channel in green, the
right channel in red, and both (L+R) channels displayed in yellow. By watching the Single
Stereo Display, an observer can easily read the levels of both audio channels, see the balance
between the channels, and instantly see if a channel is missing.
SAM uses a second Single Stereo Display to show the Sum (L+R) and Difference (L-R)
components of a stereo signal. An observer can see if excessive L-R levels could indicate
phase error or a polarity reversal in the audio chain.