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The Marsh Sound Design p2000b Preamplifier and
A400s Amplifier |
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Making Musical Magic With A Song and a Dance |
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Greg Weaver |
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3 January 2003 |
Specifications
p2000b
Frequency Response: 20-20,000 Hz, +/- 0.1 dB
THD + noise at 2 Vrms, 20-20,000 Hz: <0.025%
Input Impedance: 50 k Ohms
Maximum Gain: 20 dB
Signal to Noise ratio, A weighted: 98 dB
Maximum Output at 1 kHz: 6 Vrms
Cross talk at 1 kHz: -92 dB
Price: $1495
A400s
Power: 200 Wpc/8 ohm/1 kHz
Frequency response: 20-20000 Hz +0/- 0.2 dB/ -1 dB at
80 kHz
THD+ Noise at maximum output: <0.02% from 20 Hz to 20
kHz/0.01% at 1 kHz
Slew rate: 40 V/µS
S/N ratio, A-weighted (ref. 200W): > 110 dB
Input Impedance: 56 k Ohms/Unbalanced, 4 k
Ohms/Balanced
Power consumption: 900 W Max.
Size: 19" W × 7
⅛"
H × 18
¼" D
Weight: Net 45 lbs (20 kg), Shipping 54 lbs (23.8 kg)
Price: $2295
Address:
Marsh Sound Design
2609 Discovery Dr., Building 105
Raleigh, NC 27616
Telephone: 919-876-7554
Fax: 919-510-2992
Email:
dberman@solspeak.com
Website:
www.marshsounddesign.com
Beyond the Marsh
I suspect that if you haven't heard the
name Richard Marsh, you either haven't been in this
hobby long or you haven't been paying attention.
Richard's history is long and storied, beginning with
some 20 years at California's Lawrence Livermore
National Laboratory. I first really became aware of
the name with the introduction of the remarkable MIT
Z-Box line conditioner in the early '90's. As good as
the original device was, I was stunned during an
invitational visit to Monster Cable in San Francisco
back in May of 1999. Richard had been hired to fill
out Noel Lee's "Dream Team," and I witnessed his new
$300 Monster Cable branded conditioning device easily
best the original device which had sold for more than
four times as much.
One of his other more well-known contributions to our
hobby was his study of the
sonic effects of capacitors on audio
equipment. Suffice it to say that he will be inducted
into the High End Audio Hall of Fame, when such an
institution comes to be.
The Heart of the Matter
I think of a preamplifier as the heart of
a system. Where the sources are reminiscent of the
mind, the amplifier the musculature and the speakers
the limbs or body, the preamp has the ability to help
or hinder the performance of every other component,
both before and after it.
That said, this line stage is very simple looking;
unpretentious might be more correct. Though build
quality is obviously solid with much attention paid to
fit and finish, absent are such frills as inch thick
panels or excess engraving to drive up the cost or to
put on airs. I would use the adjective Spartan if it
didn't have a slightly negative connotation. No, this
device is built extremely well, but it isn't
pretentious in doing so.
To the left of center on the silver colored face are
the volume and balance control knobs. Just below dead
center is window for the infrared remote receiver, and
just above that is the distinctive Native American
petroglyph and the name Marsh. To the right of center
is the source selection knob, the tape monitor switch
to its right, followed by the power switch and its
blue indicator lamp. All knobs are motor driven, and
the plain black plastic remote, though much more
utilitarian in appearance than the preamp, provides
all the necessary functions; volume, balance and
source selection, as well as enabling the tape monitor
loop, engaging the mute and powering on and off. The
back offers, from left to right, an IEC socket, Marsh
remote cable control connections, balanced outputs,
single ended outputs, the record loop, 6 pairs of
single ended inputs and one set of balanced inputs.
All this for $1495? Some body pinch me, I think I'm
dreaming.
As this is one of three Marsh Model 2000
preamplifiers, including the $1195 single ended only
p2000 and the identically priced tubed p2000t, I took
advantage of the
balanced operation, first with my Spectron
Musician II and then the Marsh A400s.
Upon first listening I was sure that the $1495 price
was a misprint. I've had very highly thought of
preamps retailing for $3,000 to $4,000 that were
nowhere as clean, detailed and involving as this
little upstart! And remote controlled no less. A quick
double-check at the website confirmed the price. Now I
was intrigued!
This preamp was quite, every bit as quite as any
passive device to come through my listening room. This
is almost certainly attributable to the balanced
operation. Its level of transparency, in my
experience, has only been bested by a handful of
passive volume controls. Soundstaging was precise,
with nice illumination to the rear sides of the
presentation. Image specificity was very real, both in
terms of size, never bloated or miniaturized, and
location. Timbre was remarkable, with just the
slightest inclination toward the darker side of
neutral. Dynamics were it's strong suit, with crushing
power on macrodynamic events and the subtlest of
shadings offered on intimate and low level
occurrences.
Everything I fed it sounded GREAT, be it 12-inch vinyl
or 5-inch aluminum! Small, intimate jazz recordings
reeked of cigarette smoke. Large orchestral music
loomed before me in its full venue. Singer/songwriters
sat on a bar stool just between my speakers. Blues
players took their cues from one another along the
front wall of my listening room. If not for its slight
veiling, in terms of ultimate transparency, and just
the slightest tinge of a cooler than natural
disposition, this could be a giant killer. Even so, it
is certainly the best value in preamplification I can
think of. I dare you to find a more open, articulate
and evenhanded performer for less.
Marshing On
As surprised as I was by the degree of
excellence exhibited by the p2000b, I should have been
more prepared for what the A400s was about to deliver.
I know Richard Marsh is gifted, but you could have
knocked me over with the proverbial feather when I
hitched this big, unassuming and similarly appointed
amplifier to my rig.
With a faceplate corresponding to that of the p2000b,
the unit has only a round power switch, about the
diameter of a US dime, the company logo and name as
well as its pilot lamp vertically aligned at the
center of the front panel. The back offers two sets of
5-way binding posts per side, albeit with plastic
knobs, placed one set above the other, near the
outside left and right edge of the back panel,
allowing for an exceptional ease of biwiring,
especially given two sets of cables with spade
terminations. Side by side single-ended and balanced
inputs reside horizontally, and are mounted as a
mirror-imaged pair across the top center, with the
bat-handled toggle switch for choosing between them
directly below the RCA input on each side. The
panel-mounted fuse holder and the IEC socket are
aligned vertically near the bottom center. A Marsh
remote control cable input resides below the right
channel speaker output posts.
Bass performance is full-bodied and remarkably robust,
yet clearly defined in both rise and decay. No over
accentuation or pitch slurring was apparent, even down
to the 16 Hz my VSA VR-4 SEs offer in my room. Midbass
retained a wonderful definition, even during massed
double bass or cello passages with classical or
blistering bass guitar runs with classic rock, blues
or jazz.
Mids were handled magically, almost tube-like in their
palpability. Struck piano and plucked or bowed violin
strings had an incredible balance between their
fundamental frequency and harmonic overtones that was
simply enchanting in its authenticity. Female vocals
were so vivid in their expression and individuality
that I found myself listening way past my bedtime on
more than one occasion.
The treble was delightful as well, with a degree of
clarity and extension that forced me to question why
all solid-state amplifiers couldn't sound this good.
The purity here is remarkable for a silicon-driven
device of this price point. None of the oft-cited
"granularity" many have come to attribute to the high
frequency performance of affordable solid state
devices apparent with this beastie. The clarity here,
to my way of thinking, contributes to the remarkable
balance exhibited by the midrange. It allows for the
fully natural development of the upper overtones of
strings, vocals, pianos, et al, lending to their
remarkable cohesive character. Damn fine job here.
While most of my listening was done with VSA VR-4 Gen
III SEs, I did toss in some other speakers, including
the roughest load I had on hand. My trusty ol'
modified Acoustat 2+2 Medallions. These electrostatic
panels present any amplifier with a real headache in
the form of a highly capacitive load! This little guy
didn't even blink. Many other amplifiers duck and run
for cover when the see me bringing out these eight
foot tall beauties. I only mention this as I've had
many otherwise good amplifiers stumble and fall when
trying to make music through these giant capacitors.
Hitched to the large ESLs, the A400s acted as if it
were just another day at the office, and continued to
make its own brand of musical magic. A significant
achievement, to say the least.
With power aplenty at its rated 200 Wpc, this amp was
never overtaxed in my application. I admit that 80-85
dB is about as loud as it ever gets at Chez Weaver,
with an occasional late night, cognac-inspired 92-93
dB spike, but this amp never seemed even close to
running out of steam and clipping. Even the largest
scale dynamics were handled with ease; and little
things were attentively recreated as well. There was
just the slightest tendency to enlarge the envelope of
the soundstage, and to slightly fatten images into a
somewhat larger-than-life scale, but they were few and
very slight occurrences.
Dolce Vita
Are these high performing yet
surprisingly affordable Marsh products right for you?
Let me try to answer it this way. What this dynamic
duo offers you is the best of both worlds, glass and
silicon. If you insist on the bass and treble
extension and control offered by silicon driven
devices, as I do, but want to get into the
neighborhood of that tangible midrange that glass
heads fixate on, this is certainly your combo.
The remarkably high level of balance and incomparable
execution each component offers in their own right
takes on new meaning when the pair is used in tandem.
There is no way that this symbiotic relationship
should be both so magical and affordable at the
same time. If not for my recent auto accident, and the
resultant medical and legal bills, I would keep both
products. Even given my current fiscal hindrance, the
p2000b won't be leaving my system anytime in the near
future - and I may yet find a way to keep the A400s as
well. Time will tell. Mr. Marsh, my hat is off to you.
I hope you will let me buy you a drink by way of
thanks the next time we meet.
I guess all of this should have come as no surprise to
me. After all, these are the brainchildren of the man
who first postulated that all capacitors have their
own sound and that the only way to exorcise that sound
was to eliminate their inclusion in the signal path.
Yet I am nonetheless forced to admit that this degree
of performance from gear at this price point was both
unthinkable and impossible just years ago. I cannot
shake the thought that without the remarkable talents
of one Richard Marsh, that still may be the case. You
owe it to yourself to give these remarkable products a
listen, even if your budget is twice that of their
asking price. Marsh Magic may just make you a
believer!

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