|
Introduction What
makes the difference between a very good audio design and one that
touches on greatness? I suggest that it is not merely the technical
ability of the designer but rather, that, combined with experience,
wisdom, taste, and a highly consistent sense of auditory
discrimination. I mean to imply by the previous phrase that the
designer is intimately acquainted with the sound of real musical
instruments, and the effect that they have on the state of human
consciousness. Such a designer will intuit that which pleases, and
that which distracts from the pleasure of listening to reproduced
music. His ability will transcend technique. He will deal in the
currency of outcomes, not methods.
Without meaning to
flatter, I say simply that Tim de Paravicini is one of these
individuals. Those of us who love the sound of vinyl are very
fortunate that his British company, EAR/Yoshino has produced the EAR
834P phono pre-amplifier at a refreshingly modest cost.
The Outside The
exterior of the basic EAR 834P does not look very impressive. Perhaps
the intention was deliberate understatement. The casework measures
about 5" x 4" x 11" (W x H x D) and is finished in
plain satin black paint. The control knobs, gold-plated RCA jacks, and
IEC mains socket are located on the ends of the diminutive box so that
the unit appears narrow and deep, a departure from the rack-mount
wannabe standard. The front panel is marked in attractive white script
and is of modest thickness. There is a rotary on/off switch and a
volume control knob to one side. An LED or low-voltage lamp indicating
that the unit is operational would be appreciated. If you really want
one, it will cost another $300 for the undeniably attractive chromed
faceplate. You will lose the volume control if you opt for the deluxe
version - not a bad thing perhaps, depending on your system
configuration. My understanding is that the only other difference
between the basic and deluxe model is the faceplate.
The Inside Removal
of the top plate reveals a surprisingly large toroidal transformer
turned on edge and bolted to one side of the box. A metal partition
running the length of the unit screens the power supply from the audio
section. The volume control is an inexpensive 50K stereo potentiometer
wired to the circuit board with flying leads. Truly neurotic
audiophiles will want to replace it with something less humble or
bypass it altogether. I honestly couldn't fault the volume pot, but
the thought of those delicate signals traveling through it when I
already had an excellent passive volume control in the Jadis Orchestra
bothered me. As the unit is capable of 1V output for 2.2 mV
moving-magnet or 220uV moving-coil input, it will easily drive most
amplifiers without a line stage between. This is not just a
moving-coil step-up device.
Compared to some
circuit boards I have seen, there is a genuine lack of glamorous
components. The designer seems to be able to work his magic without
them. The parts count is low, and those parts that are present are
well spaced and easily identifiable.
Three 7025/12AX7WB
low-noise Sovtek tubes (branded 'Chelmer') are used in the circuit.
The set in the unit I auditioned performed flawlessly, so don't race
out looking for NOS flat-plate Telefunkens until you've given the
Sovteks a chance to show their mettle.
A sub-miniature push
switch on the back panel allows the user to change gain settings for
either moving-magnet or moving-coil cartridges. Available voltage gain
is generous at 48dB for moving-magnet and 68dB for moving-coil inputs.
I found the 834P very quiet in operation, making these unusually high
gain values practical. Input impedance for the moving-magnet input is
nominally 47.5 kOhms. The unusual and defining feature of this phono
stage is the inclusion of two small transformers, potted and screened
in cans, which act as a gain stage for moving-coil cartridges.
Interestingly, one of the audio print journals measured the
moving-coil input impedance at 515 Ohms. The implication is that the
designer believes that moving-coil cartridges should be loaded down to
tame high-frequency resonances. After listening, I can't dispute this
notion, as the purity and liquidity of sound that the 834P evinces is
utterly captivating and convincing.
The Sound The
pedigree of the EAR/Yoshino 834P is unmistakable. Turning the unit off
during play results in the music fading gently to black over a period
of about twenty seconds. No bangs, pops, or crackles are heard.
Conversely, the same is true at turn-on. There is no requirement for
muting circuitry because the power supply has been properly designed
and implemented.
While listening to
Britten's Four Sea Interludes (Angel S-37142) with the Jadis
Orchestra and the Quad ESL-63 USA Monitors, I noted that the treble
was open, detailed, and delicate. This reading by André Previn
conducting the LSO was redolent of atmosphere, ambience, and layered
depth. Players were sized realistically and positioned within an
exceptionally wide soundstage. Bass passages were firm, deep and had
true pitch. Low-level timbral details, like the subtle doubling of
trumpet and xylophone, were portrayed with clarity and nuance.
Malcolm Arnold's English
Dances (Greensleeve ESD 1077801) was highly entertaining. The
strings of the Bournemouth Symphony Orchestra were remarkably sweet,
and I was treated to riotous dynamics throughout without a hint of
glare or glaze. The ambient detail captured in the Guildhall,
Southampton, was very transparent, revealing reverberant whacks on the
bass drum and resounding volleys from the brass section. Oddly, Sir
Charles Groves and the EMI engineers elected to record the Dances
straight through, with tape rolling between movements. I was immersed
in the live ambience of page turning and chair shuffling throughout.
Again, the sense of layering was very good, accompanied by a slight
emphasis in the mid-bass and lower midrange.
I found the Water Lily
Acoustics recording Saradamani (WLA-ES-23), featuring Vishwa
Bhatt on a hybrid slide guitar, to be exceptionally revealing of the
timbral beauty and balance of the 834P. Bhatt plays an evocative
guitar equipped with twelve sympathetic strings. It was immediately
apparent that more overtones were being retrieved from the grooves by
the Lyra Lydian cartridge, giving a slightly more silvery tone to the
guitar. The five or six simple bell strikes that occur a minute or so
into the first cut startled me with their verisimilitude, each one
clearly varied in intensity. The tabla was firm, dynamic, and tuneful.
I became aware that the sound was slightly warmer and darker than that
of my reference SP-9 Mk ll, this being counterbalanced by the 834P's
shimmering treble.
In summary, I would
characterize the EAR834P as floridly rich in harmonics, quiet, dynamic
and in complete control.
Conclusion Choosing
the 834P with a volume control would be a wise move for many lovers of
analog music. It will allow them to completely dispense with a
conventional preamplifier that sends the phono signal through a line
stage on the way to the amplifier. The consequences of this reduction
in the number of components in the signal path should be obvious.
Greater fidelity to the signal encoded in the vinyl groove is
undeniable.
As I did not have the
opportunity to bypass the volume control in the test unit, I can only
imagine the improvement that would surely bring. If you have an
amplifier like the Jadis Orchestra with a passive volume control, then
this should be considered mandatory.
The EAR/Yoshino 834P is
a highly musical design. Consider it a gift from one of the giants on
today's audio scene. I recommend it to analog addicts without
reservation. |