Power For Your System
The MM7055 power amplifier
produces 140 watts of high current output from each of its five channels.
This is “real world” power, too, measured across the full audio bandwidth (20
Hz – 20 kHz) at 8 ohms with 0.08% Total Harmonic Distortion. Among other
attributes, this means the MM7055 is capable of long-term power delivery into
low impedance speakers.
The Many Faces of Excellence
In practical terms, the MM7055
is ideal for a “5.1” home theater system, whether based on a moderately powered
receiver or a surround sound processor. You can use it to power speakers
in different areas of your home; stereo reproduction in two rooms plus a mono
channel for secondary areas such as a den or kitchen. For more complex
home theater systems, the MM7055 pairs with one or several MM7025s to help
create a totally immersive “7.1” or “9.1” audio experience.
Inside The MM7055
A massive power supply includes
a multiple-secondary EI-core transformer and over 65,000 µF of custom-designed
energy storage capacity. Critical circuit components from many
world-class suppliers were chosen only after extensive listening tests.
Among these, the LAPT Hyper Power output devices were first used in Reference
Series components. Current feedback topology insures astounding accuracy
and control under high-drive conditions.
Physically, the MM7055’s output
stages mount on an extruded aluminum “thermal tunnel” for efficient heat
dissipation. With temperature-sensing forced air cooling, this
configuration assures cool operating temperatures for long-term reliability,
even when making full use of the amplifier’s substantial output capabilities.
Balanced inputs and single-ended
RCA inputs are both supported, and you can choose either type of input for each
channel, individually, for easy and flexible connectivity. Audiophile
grade, gold-plated four-way binding post speaker terminals insure tight
connections to your choice of speaker wire.
The MM7055 includes input and
output jacks for DC “trigger” pulses as well as RC-5 jacks for total remote
control convenience, even with legacy Marantz products.
The chassis itself is heavy
gauge steel for maximum isolation from external vibration as well as
electromagnetic and radio frequency interference. And chassis depth is
less than 14½” so the MM7055 will fit quite nicely on a shelf, in a cabinet, or
in a conventional system rack with the optional rack mount kit RMK8003MM.
Dependability. And classic looks. The MM7055 is, simply speaking, a