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Marantz PM-11S2 review
Ultimate finesse often starts with brute over-engineering. At least,
that’s the case with the Marantz PM-11S2 Reference Series integrated
amplifier.The power supply, that critical stage that provides operating
voltages for every circuitry stage, features a massive toroidal transformer
newly configured for minimum mechanical vibration. Completely covered by an
aluminum case, and mounted to the chassis on its own 10mm-thick aluminum
base, this multiple-secondary device weighs 14.5 pounds in itself. Another
power supply design element is a choke input using a large capacitor to
eliminate high frequency noise. Schottky barrier diodes in the rectifier
section provide high instantaneous current capability and quicker response
than conventional circuit elements. The PM-11S2’s preamplifier
section features fully balanced circuitry with liberal applications of
Marantz’s HDAM® (Hyper Dynamic Amplifier Module) in their newest SA3
configuration. Sonically, the SA3 modules assure smooth stage-to-stage
signal transitions and help provide the silken response so prized by
audiophiles. Each input includes a separate HDAM®-SA3 buffer stage that
virtually eliminates unwanted interactions between source and amplifier.
And, of course, the XLR input’s buffer is a balanced HDAM®
configuration. The phono input, ready for both MM and MC phono cartridges,
boasts full constant current feedback topology implemented with discrete
device. This minimizes the sonic discontinuity often observed with lower
quality equalization circuits as LP signals range from low to high
frequencies. The final preamplifier stage includes a high-precision digital
volume control. Augmented by more HDAM® devices, it provides easily
repeatable gain settings as well as faultless transition from preamp to
power amp stages. On the amplifier side, the PM-11S2 evidences the same
level of careful consideration. Signal traces, the copper "roads"
that carry current, are far wider than convention dictates. Configured as
two "semi-monoblocks" that share only a common chassis, power
cord, and transformer, each amplifier channel draws on the MA-9S2’s
minimalist two stage design in which a voltage amplifier determines overall
gain and then feeds a current stage which provides the force needed to
drive the loudspeakers of your choice. The end result? An integrated
amplifier comfortable with virtually any loudspeaker. With the ability to
"double down" power into low impedances, the PM-11S2 often
surpasses the speaker control capability of so-called "super
amps". A 5mm thick aluminum plate tops the rigid copper-plated chassis
and its dual layer bottom provides a firm foundation for all internal
components. Two sets of WBT speaker terminals and front panel A/B speaker
switching add a rare level of convenience. You can also configure a pair of
these remarkable components to bi-amp your favorite speakers. And F.C.B.S.,
our proprietary Floating Control Bus System, synchronizes for up to three
PM-11S2s for multi-channel applications. Front panel cosmetics are as
advanced as the circuitry behind them. Indirect blue LEDs display status
with a d?cor-friendly sophisticated elegance. You’ll also be happy
to note that the display is a low noise LCD that exacts no performance
penalty as it keeps you informed about the PM-11S2’s operation. The
Marantz PM-11S2. A true Reference in every sense of the word. Simplicity.
Flexibility. And aural capability beyond your expectations. But isn’t
that exactly what you expect? After all, you’re considering a
Marantz. For operational and technical assistance 24/7, use our self help
Online Support Center, where answers to many common questions can be
found.View Warranty information..
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