Demonstrating the Stereo-Radio concept - for YOUR Satisfaction

I've written ad-nauseum about exploiting the use of stereo-audio in amateur radio operations.
The most recent Blog posts in the stereo audio genre include:

• [X] - Using Stereo Ssb in Worldwide DX Contests
• [X] - BLASTS from the PAST: Stereo CW and it's many Variants.

I originally discovered that using two adjustable audio filters (one for each ear) in contrast with the
fixed-filter approach documented in the original 73-magazine article on the concept of "Stereo Cw", transformed the original idea into a method for enhancing not only Cw reception, but Ssb and RTTY reception as well.

As documented in previous blogs on the stereo concept, a number of different audio filter units were evaluated for use in a dual-filter configuration, including: MFJ-752's & JPS NIR Dsp filters.  It was finally determined that a pair of classic analog Autek QF-1A filters (one for each ear) provided the most optimum improvement to the listening experience.

We can talk ABOUT stereo audio ad-nauseum.  However, when you actually experience it during live operation, you will experience an [indescribable] a-Hah realization.  To experience the full impact of the stereo audio concept, find a RUN frequency (either your own or that of a station working a pile-up).  For purposes of this discussion, I will be referring to the control knobs on the Autek QF-1A filter.

on CW:

• Choose/Lock a run frequency.
• While "studying" the effect(s) of adjusting the QF-1A Selectivity/Frequency
  controls for different spatial-audio experiences, notice how it makes you feel.
• NoTiCe "where" the stations seem to "appear", "inside" of your listening experience.
• Using the R-I-T (Clarifier) control, notice how you can "shift" a signal's location
  "in your head".
• Notice how certain Left/Right filter settings seem to cause certain signals to
  JUMP OUT in relation to signals at other audio frequencies.

on SSB:

• Choose/Lock a 'listening" frequency.
• Use either VFO-B or the R-I-T (Clarifier) for tuning stations in, noticing how
  the other stations/voices shift-around "inside" of the listening experience.
• The Selectivity/Frequency knobs enable you to slightly shift the audio passband
  offering improved intelligibility of difficult voice accents, reducing the number/frequency
  of "REPEATS".

SPEAKERS vs. HEADPHONES
The picture heading up this Blog post shows the use of a pair of LEKATO speakers, which are of course stereo speakers.  A custom-designed cable separates the Left/Right audio to each speaker pair.  The further apart the speakers are, the greater the stereo-separation effect.

THE ACTUAL LISTENING EXPERIENCE
Begin the listening session using identical knob positions with both filters.  Notice that the signals (voices or code) seem to be monaural - more-or-less in the middle of your experience.  Then, shift
one filter's FREQUENCY Knob higher in frequency and the other one lower in frequency.  (If you have hearing losses, switching the high/lows from left to right can compensate for those losses, improving intelligibility.)

It should be pointed out that being essentially a filtering-process, the use of stereo audio may inadvertently introduce what is known as artifact - false signals generated as a result of combining left/right signals in unique combinations.

While this Blog mainly details the use of stereo audio for Ssb and Cw use, in a RTTY environment, the filter adjustment should be more along the lines of enhancing the MARK/SPACE decode process.  When a station calls in off-frequency, as you tune them in (lining up with the "goal posts"), you will experience a shift of the signal to the "center" of your listening experience, similar to using a "center-channel" in conventional stereo audio.

Have YOU ever played around with the stereo audio in Amateur Radio?

What has been YOUR experience?