A DEQX Preamp/DAC provides a superbly transparent sound.
Moreover DEQX also calibrates your speakers and room
so your system achieves its full potential
with absolutely no down side.
Speakers, being electromechanical devices,
never accurately recreate the sound as intended -
they’re Hi-Fi’s weakest link, and with HD media, even more so.
Apart from inaccurate volume at different frequencies,
they delay many frequencies more than others
distorting timing coherence
we call these impulse response errors.
these graphs are from an actual measurement of a loudspeakers
the familiar frequency response graph shows
how the speaker play some frequencies too loudly, and some too softly
the less familiar group delay graph
shows how some frequencies are delayed, compared to others
the vertical axis shows time delay
the horizontal axis shows frequency
DEQX corrects these amplitude and timing errors in detail
let me show you why this matters
our brain relies on volume and timing cues to form a realistic sound stage
at a live concert we can close our eyes and hear where each instrumentalist is
sound travels about one foot or 30 centimetres in a millisecond
we visualize the position instruments
by the tiny delay their sound takes to reach one ear compared to the other
just fractions of a millisecond
Now let’s rotate the timing graph so time is on the horizontal axis
as sound travels about a foot in a millisecond
we can designate timing delays in units of distance
an ideal speaker would have a perfect impulse response
meaning any delay it introduced would apply equally to all frequencies
which would also play at exactly the same volume
now imagine a soloist playing a cello
the sound image as recorded is undistorted
unfortunately speakers delay some frequencies more than others
causing the sound image to be smeared
the image created in our mind appears like this
DEQX corrects impulse response errors by delaying the earlier frequencies
to preserve the original live timing coherence
while frequency response errors also corrected.
finally DEQX provides Room Calibration
especially focusing on room resonances that also "mask" detail.
The changes are not subtle,
you will perceive individual performers and other instruments much more distinctly
to see if DEQX is right for you
fill in the "Ask Us" form or contact any of our dealers at