Brochure

MHD: All in.
Ultra-compact and ultra-powerful.
• Stackable chassis design
(via optional HD Stack Kit, sold separately)
• Security cover for controls
• Removable power and speaker plugs
• RealSink™ thermal management
The revolutionary MHD ampliers apply
a switching technology called Single Cycle
Control™ to deliver world-class, full-range
sonic performance and very high power from
what seems like an impossibly small package.
This advanced technology wastes very
little power compared to a conventional
marine amplier, resulting in less heat being
generated for each watt of output. This
allows us to pack a huge amount of clean
power into the compact MHD chassis while
also delivering stellar installation exibility.
To get it all dialed in, the MHD’s studio-
grade signal processing features make it
easy to extract optimum performance
from our marine speaker and subwoofer
systems. If you’re looking for lots of
clean, raw power, these are for you.
Removable power
and speaker plugs
How small and how powerful?
All MHD amplifier models share
the same compact dimensions,
making them far easier to place than
conventional marine amplifiers.
Lateral mounting
feet create additional
mounting flexibility.
Remote Level Control (HD-RLC)
With the addition of an HD-RLC, you
can control the overall level of the
subwoofer channel or the whole
amplifier, depending on the model.
Security cover hides and protects controls
MHD Models
MHD750/1: Class D, Wide-Range
Monoblock Marine Amplifier
1 x 750W @ 1.5 - 4 ohms
MHD600/4: Class D, 4-Channel
Full-Range Marine Amplifier
4 x 150W @ 1.5 - 4 ohms per ch.
2 x 300W @ 3 - 8 ohms per ch. bridged
(24V version also available)
MHD900/5: Class D, 5-Channel Marine System Amplifier
4 x 100W + 1 x 500W @ 4 ohms per ch.
4 x 75W + 1 x 500W @ 2 ohms per ch.
(24V version also available)
Power rated at 11.0 - 14.5V supply voltage, with less than
0.05% THD+N (RMS Method)
Groundbreaking Switching Amplier
Technology: Single Cycle Control™
• Full-range operation with reference-grade
sonic capabilities.
• Patented Single Cycle Control™ technology
corrects output in each and every switching cycle
(over 400,000 times per second). This dramatically
reduces distortion at high frequencies compared
to other full-range switching amplifiers.
• Exceptional efficiency reduces current draw and heat,
permitting reliable high power output within a very
small, easy to install design.
R.I.P.S. (Regulated, Intelligent Power Supply)
• All the power, all the time… tightly regulated, intelligent
power supply maintains full power at any impedance
from 1.5 - 4 ohms per channel and at any supply voltage
from 11V - 14.5V.
• MHD600/4 and MHD900/5 offer independent R.I.P.S.
optimization for each channel section.
Studio-Grade Signal Processing
• Select shallow (12dB/octave) or steep (24dB/
octave) high or low-pass filters to best integrate with
subwoofers or component systems.
• Fully-variable frequency selection from 50-500 Hz with
detented, calibrated potentiometer(s)
• Remote level control with HD-RLC controller
(sold separately)
• Preamp outputs (except MHD900/5)
• Infrasonic filter and Output Polarity Switch
(MHD750/1 only)
Dierential-Balanced Inputs
• NO NOISE! Outstanding noise rejection prevents
alternator whine and other noises.
Advanced Rollback Protection and RealSink™
• Amplifier will never shut down
due to thermal overload.
• Restores full power operation when it has cooled down
to safe temperature.
• Real finned heat sink is extremely
effective and requires no fans.
• Multiple units can be stacked without compromising
cooling effectiveness. Stacking kit is sold separately.
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