| AUDIENCE aR6T POWER CONDITIONER
AND Au24 POWERCHORD |
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September 2009 |

Prelude
Verdant
For the fortunate music lover here in the Northeast,
summer beckons with the gift of a trek to the
verdant Berkshire Hills in Western Massachusetts to
visit the summer home of the Boston Symphony
Orchestra (“BSO”) at the Tanglewood Music Center (“TMC”).
On a late afternoon in July, I ventured through
“Bernstein’s Gate” onto the spacious lawns of the
TMC, feeling like a kid in a candy store. Passing
under ancient oaks and maples, (with the sun setting
on the lake and the rosy Berkshire spires beyond), I
came by surprise upon a rehearsal of the BSO in the
cavernous Koussevitzky Music Shed. It was delightful
to see members of the BSO clad in their summer
attire of jeans and baseball hats rehearsing with
informal and jovial panache. The BSO was rehearsing
for its upcoming performance of Dvorak’s Symphony
No. 8, led by the ebullient conductor, Herbert
Blomstedt. Only in a special place like Tanglewood
can you relish Dvorak’s huge brass chorus thundering
over a vast green landscape, (with the competing
calls of nesting birds in the rafters of the
Koussevitzky Music Shed echoing such drama).
Oblivious to the cacophony of a birds’ chorus above
him, Blomstedt paused during the rehearsal to repeat
certain sections of Dvorak’s score with gentle
instructions for various sections of the orchestra.
These included little gems such as: (directed to the
violins) “Play this passage softly like it is a
memory from 50 years ago” or (directed to the
trombones): “Play this as if it were your Last
Rites!”
In the evening, I ventured over to the more intimate
confines of Seiji Ozawa Hall to hear a recital by
violinist Christian Tetzlaff and pianist Alexander
Lonquich in their final (of three nights) of
recitals performing the complete Beethoven Sonatas
for Violin and Piano. Ozawa Hall is a beautiful
modern recital hall, constructed of wood with lots
of natural light and a wafting scent of pine
(reminding one of a bucolic summer camp building).
Just before the performance starts, the back wall of
Hall is rolled away to reveal the expansive lawn and
the leafy hills beyond. Many listeners on the lawn
bring exotic lanterns to light up the Twilight,
casting a wonderful, calm beauty over the lush
setting and their inviting picnic spreads. And what
music making there was this evening! The musical
partnership between Tetzlaff and Lonquich was
astounding, filling Ozawa Hall and its grounds with
chamber music of the highest artistry and joy.
Tetzlaff and Lonquich brought a special
weightlessness, a great tactile beauty to every
inner detail of Beethoven’s final Sonatas.
Tetzlaff’s ability to create a myriad of dynamics,
including such lithe tones to the tip of his bow,
were heard in amazing clarity. The audience held its
collective breathe as it followed every nook and
cranny of Tetzlaff’s sparkling phrasing or
Lonquich’s pensive pianissimos until the last,
dancing note was heard, fading away into the
vastness of the lawn and the darkness of the
Berkshire Hills beyond. On my ride home, (with a
full yellow moon lighting the way), I was convinced
that some of the magic of what I had just heard in
this extraordinary live performance was also
captured, (to no small measure), by what I was
hearing in my system at home, with the addition of
Audience’s latest aR6T power conditioner and power
cord, their Au24.
Andante
Technique
The aR6T is the latest in Audience’s long and
distinguished line of power conditioning products.
The spiffy and compact aR6T has six outlets and uses
a Neutrik Powercon connector to attach a fitted
Audience power cord. (Audience also manufactures a
unit with twelve outlets, the aR12T, and most
recently, introduced a two-outlet version, the
aR2T). Fit and finish is superb, with great
attention to details like sturdy Hubbell AC outlets.
All units are built around Audience’s “Adept
Response” proprietary technology (“AR”). AR
incorporates a complex system of fully passive
filter circuits, individually selected to ensure
that no filter adds noise to the system. This
passive filtering system is linked to a power factor
correction system. This system operates in two
distinct ways. First, through its proprietary
circuitry and isolation technology, it isolates each
of the aR6T’s six outlets from one another. Next,
this power factor correction system targets the
fluctuating power source that enters from utility
pole to our listening spaces, (further distorted by
our use of household appliances). The AR power
correction system seeks to transform this
fluctuating current (through the use of additional
isolation and circuitry techniques, including
magnetic circuit breakers instead of relays or
switches) to insure a stable and clean power source.
The newest “T” models of the AR power conditioner
product line incorporate the addition of Teflon
capacitors. Audience CEO John McDonald, (he, like
Maestro Blumstedt, the picture of ebullience for all
things musical) referred me to Roger Sheker,
Audience’s engineer, for an explanation of why
Teflon is superior as a dielectric material. Sheker
states that Teflon has the least dielectric
“absorption” of any material. This means that as a
mechanical effect, Teflon has the least amount of
stored energy retained and released over the period
of the natural deformation of any dielectric
material. In addition, according to Sheker, Teflon
has the lowest “dissipation” factor of any
dielectric material, in that when charged, it has
the lowest percentage of any dielectric in turning
such energy into heat loss. As a result, pulses of
energy or signals passing through a Teflon capacitor
pass through it faster and cleaner, with little or
no “overlapping or time smear” as McDonald
describes.
Much like the Teflon description in the aR6T,
McDonald describes the composition of his latest
power cord, the “Au24 powerChord,” in terms of
advances made in the un-obstructed flow of low-level
signals. This is accomplished by utilizing the same
mono crystal (OHNO) copper strands, (rather than
conventional copper), that Audience has used in
producing their famed Au24 interconnect and
loudspeaker cables. I now looked forward to hearing
what differences, if any, occurred when this new
Au24 powerChord was substituted for the Audience
PowerChord “e” that was provided as the standard
power cord with my aR6T unit.
Allegro con
brio
Knowing that isolated, dedicated power is essential
to gaining the best sound from any high end system,
I had taken two steps to get my baseline system
sounding as great as I thought it could. I had
installed a dedicated circuit, (with wiring and
outlets provided by Virtual Dynamics), and was using
a Nordost Thor power conditioner (that I had
reviewed several years ago in these pages and
considered my reference power conditioner). I knew
well my system’s abilities with the Thor in place,
and now replaced it with the aR6T (first with its
Audience powerChord “e” that it was shipped with, and
later with the newest Au24 PowerChord). Over many
sessions, I would listen to the baseline system with
the aR6T, then remove it or replace it with the Thor
or no power conditioning at all. I would go back and
forth with several different combinations and
sequences, utilizing the same batch of reference
recordings that I know well. In the end, the results
were abundantly clear: the aR6T took everything that
the Thor had provided and then elevated my system to
another level of performance and musical
involvement.
For example, I returned often during
these sessions to reminisce about the sheer artistic
power of Tetzlaff and Lonquich’s live recital at TMC,
particularly in how they brought an uncanny
weightlessness and vividness to every detail and
nuance of Beethoven’s genius. I also recalled the
crackling feeling of the night air and how silent
(yet alive!) it felt within the acoustic space of
Ozawa Hall. This made every note of the violin and
piano stand out distinctly, each floating on a
cushion of this night air from the stage to the back
of the Hall and into the lawn and Hills beyond.
It
was an unforgettable evening and of course, could
never be fully duplicated or reproduced either in a
recording studio or on one’s audio system. However,
while listening to Tetzlaff’s solo recording of J.S.
Bach’s Sonatas and Partitas [Hanssler 98250]
on my system, (with the addition of the aR6T), here
was a great new slice of this vividness of
performance and sense of recording space that I
yearned for! With the aR6T in place, Tetzlaff’s
violin became a much more dramatic instrument, full
of inner life. The woody character of Tetzlaff’s
solo violin was much more tactile, his notes
stopping and starting on a dime (with even those
furious Prestos rendered with precision). Tetzlaff’s
unique gift of creating warm vibratos in the fastest
of phrases was there to behold, as was all of the
myriad diversity of his dynamic range. The insertion
of the aR6T brought a new, dance-like, joyful
aliveness to the recording, (a slice of what I had
heard at Ozawa Hall), with a natural flow of notes
into a wider and deeper soundstage than I ever
thought possible in my system. The same recording
with the Thor in place was still beautifully
rendered, but lost much of the magic of these
comments, with a somewhat flatter, less dramatic and
less open presentation. Like a trustworthy (and deep
pocketed) usher who winks at you for all your good
fortune, the aR6T seats you in the best seat in the
house to enjoy all of the musical action that a
particular recording affords. Its insertion improved
the Hanson Prince V.2’s already superb resolving
ability, (particularly in the upper midrange and
treble) and informed me, for the first time, that I
had a long way to go in mining the full potential of
my EmmLabs CDSA player and its beautiful way with
inner resolution and dynamic flow.
With
the aR6T as trustworthy usher, the soul of other
favorite recordings sprung vividly to life, whether
it was the boisterous Cuban Rumbas of Chucho Valdez
or the quiet dynamo of Nick Drake’s solo acoustic
guitar. Drake’s strums on “Road” from his gorgeous
Pink Moon [Hannibel 4436] were revealed for
the first time in all of their nylon, blunted
quality, (like bolts of dry lightning) as Drake
pounded that vibrating bass string into decay. Ah,
and what did the aR6T do to the recordings of the
male voice, as diverse as Drake’s to the dark husky
voice of Greg Brown? Its insertion transformed them
into a more living, breathing thing like I had never
experienced before. Listening to Brown’s gem of a
live recording, Solid Heart [available from
inharmony.org to benefit that excellent
organization] (particularly to Brown’s gruff sliding
vocals on his soulful cut, “Lullabye”) was like
nothing I had heard before with the aR6T ushering me
into the best seat in the Majestic Theatre in
Corvalis, Oregon. Here for the first time was every
one of Brown’s simple vocal gestures revealed: his
sly wit, his lingering pauses; his holding and
letting go of each vocal in syncopation with his
crisp guitar strums, whose leading edges were clean
and crisp.
Similarly,
with female vocalists, such as the sassy
Seattle-based vocalist, Greta Matassa, [on her
superb Live At Tula’s (Jazz Stream Records
SACD)], the aR6T again ushered me to the best seat
in this intimate Seattle club. When finger snapping
starts to drive the intro to Clifford Anderson’s
walking acoustic bass on “Black Coffee,” the aR6T’s
insertion put real flesh and bone to those audience
snaps and added a new, vividly dramatic quality to
Matassa’s vocals. You could almost feel the walls of
Tula’s shake and reverberate with each of Matassa’s
soars, growls and beautiful vocal moves. Remove the
aR6T and everything collapsed into a less vital
musical scene, less open, thicker, flatter in both
image dimensionality and stage dimensions; as if we
had been moved to the far end of the room by a rich
patron who scored our best seat at Tula’s.
Anderson’s bass was also instructive: his glorious
steps down the stairs to the dB basement were
absolutely more precise and defined with the aR6T in
my system. With the Thor in place, Anderson’s bass
was less taut, with lowest tones losing some of
their specificity and distinct pungent quality
achieved with the aR6T. And speaking of bass, don’t
forget the Cuban Master, Orlando Cachaito Lopez, as
his acoustic bass tangles with sinuous verve
alongside Policarpo Tamayo’s flute on their duet, “Redencion,”
taken from Lopez’s dynamic self-titled recording
[World Circuit 79630]. The insertion of the aR6T
here was revelatory, with much more open space
between the players, revealing a flute flying and
piercing without any sense of compression (even in
its highest calls). Miguel Diaz’ congas were
transformed from being slightly flat and thick
images to being pulsating, sharp images with the
aR6T. Only with the aR6T in place could I explore
fully where Diaz hit the drums’ inner and outer
surfaces with his hands and palms, starting and
stopping on a sizzling dime in a blaze of action.
Finale
Rejouissance
In my auditions of the aR6T, I kept coming back to
that analogy of a sage usher who knows the recording
venue he has worked in for many years and seats you
in the best seat to hear every nuance of performance
and recording venue that a given recording may
offer. With the aR6T, everything on recordings is
just more vital, more musically engaging and
inviting. As such, it is indispensable. It
highlights again the importance of obtaining
dedicated power to one’s system and then investing
in power conditioning to raise that system that you
already love to another level of performance. The
aR6T is my new reference for a power conditioner and
I simply cannot go back to listening without it as
my ushering partner in my listening sessions. The
aR6T’s price tag of $4600 is costly and a lot of
tips for one usher to pocket (and for us to save up
for!). But when one has already spent thousands to
build a superb audio system in an attempt to get as
close as one can to all of the musical action
presented on one’s favorite recordings, such an
investment is not off the charts by any means. The
aR6T reminds me of why I spend hours searching in
the back recording bins of places like The Academy
Music Store in New York City for that special
Tetzloff recording, to bring it home and get the joy
of listening to every nuance of his individual music
making.
Finally, a word about the significant achievement
that McDonald and his team have achieved with their
new Au24 powerChord, which is a cost upgrade to the
aR6T. The addition of the Au24 powerChord took the
aR6T to yet another level of performance in three
key areas: speed, focus and presence. With the Au24
linking the aR6T to my dedicated power outlet,
leading edges were brushed cleaner; loud transients
were more dynamically composed and relaxed; and bass
definition was even more precise, especially in the
lowest plunges of Cachaito Lopez’s huge bass. With
Audience’s special incentives offered to get the
Au24 partnered with their aR6T, I highly recommend
it as an upgrade to it.
But enough talk! Let’s return to tip that marvelous
(aR6T) “usher” again and sit down to listen to music
recorded in that special place called Tanglewood.
Meet me there!


Specifications:
Audience aR6T Specifications
6 Hubbell high-conductivity power outlets
Current/voltage: 15A or 20A/130V, standard; 220V,
230V 240V available
Dimensions: 5”(H); 19”(W); 9”(D)
Weight: 15 lbs.
Prices:
$4600 (aR6T); $8000 (aR12T)
Au-24 powerChord: if aR6-T bought with Au24 powerChord,
upcharge is $1,550;
a six foot Au24 powerChord is sold separately for
$2200.
Company Information
Audience AV
120 North Pacific Street, #K-9
San Marcos, CA. 92069
Tel: (805)-565-4390
Website:
www.audience-av.com
E-mail:
info@audience-av.com

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