Stereophile – August 2019

(Elle) #1

NO-INTEREST FINANCING*


NEW VPI
HW-40 Direct
Drive Turntable
$15,000

Now Playing in
Sound Room #1

New
4
0


th
Anniversary Turntable!

LISTENING

I never made note of how the
EL84 tubes were biased in the
original Montille—and a small
amount of global feedback.
This relatively affordable
Shindo uses Hammond rather
than Lundahl output trans-
formers, sharing space with
an enormous Denki mains
transformer. Passive parts in-
clude NOS Sprague coupling
caps and high-quality Cosmo
level potentiometers; build
quality, including the all-steel
casework, finished throughout
in the company’s trademark
shade of green, is superb.
I began my time with the
Montille CV 391 by using it
to drive my Altec Flamencos,
and the first thing that struck
me was its extraordinary vividness. On
the first song I played through it— “All
the Things You Are,” from Sonny
Rollins and Coleman Hawkins’ Sonny
Meets Hawk!(RCA/Classic Records

energized.
Taking a closer look at the Shindo’s
output stage, I found 189V on the
screen grids of the CV 391 tubes—a
little more than 60% of the 301V on
their anodes, suggesting that the tubes
are operated as pentodes. Also interest-
ing is the use of cathode biasing on the
output tubes—I would say this, too, is
a Shindo first in my experience, except

in its first incarnation used
two EL84 pentode tubes per
channel, operated in push-
pull, for a specified output of
15Wpc. The late Ken Shindo
designed the output section
of this newer Montille around
push-pull pairs of British CV
391 tetrode tubes. Today, the
20Wpc Montille CV 391
remains in the Shindo line, its
design having been revised not
long ago by Ken’s son Takashi.
Takashi’s version of the
Montille CV 391 uses one
6AW8A pentode-triode and
one 12AT7 dual-triode per
channel. Like my Shindo
Haut-Brion, also a three-
stage, push-pull amplifier, the
Montille CV 391 has a power
supply built with solid-state rather than
tube rectifiers. But unlike the more
expensive amp, the Montille forgoes
Shindo Labs’ usual practice of using an
internally mounted EY88 diode tube
in line with the center tap of the B+
secondaries of the mains transformer
in their solid-state-rectified amps, as
a means of ramping up plate volt-
age after the tube heaters have been

3 I first wrote about the Shindo Montille in the
August 2007 Stereophile; see stereophile.com/
artdudleylistening/707listen/index.html. That model
endures in the line—at $5495, it is the most affordable
Shindo amp—although it now uses the 6V6 beam-
power pentode as its output tube.
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