From their pedigree in pure analog circuitry,
Magnum Dynalab is proud to introduce their most uncompromising
2-channel Integrated Amplifier. Using the same Hybrid-Acoustic circuitry found
in their MD-209 Audio Receiver, their proprietary
6922 Cryovalve tubes, and
stocked with Magnum Dynalab's unrelenting build quality and audio engineering,
the new MD 309 Hybrid Integrated Amplifier® is a future-ready anchor for your
high-performance home audio system.
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INTRODUCING HYBRID-ACOUSTIC TECHNOLOGY. This unique and
proprietary circuitry combines the musicality, soundstaging and audio
realism of their MD-Reference 6922 CryoTubes with the crisp detail,
harmonics and long-life of a solid state device.
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POWERFUL and FLEXIBLE. Equipped with 40 Sanken output transistors
to boost current after the tube gain stage, the MD-309 Hybrid Integrated
Amplifier is rated at 225 watts into 8 ohms (450 watts into 4 ohms),
adequate output to drive the most demanding of speakers.
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FUNCTIONAL AND STATELY. With a 5" LCD touchscreen, symmetrical
knobs and meters, soft blue LED lighting, a 1" thick faceplate and intuitive
remote, the MD-309 Hybrid Integrated Amplifier® is as attractive as it is
easy-to-operate.
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INTEGRATE ANY DIGITAL SOURCE COMPONENT. The MD-309 Hybrid
Integrated Amplifier is equipped with the most advanced Digital-to-Analog
converter, featuring our full-time upconverting and oversampling Burr-Brown
design, 3 digital inputs (including USB), and seamless operation through the
remote or faceplate.
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FLEXIBLE INPUTS. With 1 line-level pre-amp output, 2 Balanced
(XLR) inputs and 3 single-ended analog inputs (including a Surround Sound
Processor input for integration with multi-channel applications), PLUS 3
digital inputs (including USB), the MD-309 acts as the backbone for any home
audio/video system.
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AUDIO PROTECTION BOARD. The MD 309 Hybrid Integrated Amplifier®
comes equipped with a proprietary circuit to run regular diagnostics on the
device, ensuring safe and efficient operation of the unit at all times.
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MAGNUM DYNALAB BUILD QUALITY. Solid aluminum feet with Vibrapods
Isolators, 24K gold plated .093" thick circuit boards, hefty internal
heat-sinks and a burly chassis are all characteristics of our unrelenting
commitment to quality.
The simple and efficient treatment of the analog signal throughout the MD-309
Integrated Amplifier is, without a doubt, the hallmark of this musical device.
Our Director of Design Zdenko Zivkovic has worked tirelessly to develop the
Hybrid-Acoustic design platform, the backbone of this Hybrid Integrated
Amplifier. This distinctive circuit path delivers the unique combination of long
tube life (expected to be greater than 7 years under normal use), with
high-current output (225 watts into 8 ohms and 450 watts into 4 ohms) in a
design that generates half of its gain from the triode stage. The result is
reference-quality audio realism and soundstaging of a full triode design
combined with the sharp detail and harmonics characterized by the very best
solid state devices.
This unique combination of long tube-life and high current output is achieved
NOT by the use of output transformers, which add weight, limit frequency
response, and ultimately, harm the harmonics of the resultant signal. Rather,
the MD-309 Integrated Amplifier is equipped with an output stage that generates
power through the use of 40 Sanken output transistors (10 per phase per
channel), which amplify current, NOT voltage, taking critical stress off the
6922 Cryovalve tubes, and eliminating the need for traditional output tubes that
are typical of tube amplifiers. This allows the tubes to operate efficiently,
and when combined with a collection of world-leading components, including
Mundorf Gold capacitors in the tube gain stage, Kimber Hyper Pure wiring
throughout, and a unique audio stage that delivers the signal fully balanced
before the output stage, the ultimate result is a perfect reproduction of the
original dynamic signal from the source component.
Not to be overlooked, we've also equipped the MD-309 Hybrid Integrated
Amplifier with a power plant that is more than capable of delivering current to
all critical components. A shielded torroidal transformer and 8 Mundorf M-Lytic
capacitors delivering 22,000uF each (total of 176,000uF of filtration) both help
to ensure that the MD-309 Integrated Amplifier is free of ripple, with zero
noise at 60Hz, 120Hz and 180Hz. Finally, each channel has its own axis bridge
from the transformer, ensuring an ample reserve of current is available to reach
the operating components of the device, making certain current supply is never
an issue.
With an incredible intuitive LCD touchscreen and a functional remote, the
MD-309 Integrated Amplifier is as easy to operate as it is attractive. The large
knobs on the front panel offer the operator the option of manual volume control
and input select, and if desired, users can pre-select listening levels for each
input.
The 5 analog inputs (2 Balanced XLR, 3 single-ended) provide plenty of source
options, and includes a SSP (Surround Sound Processor) input, which disengages
the pre-amp section to allow the MD-309 to act as the amplifier for the 2 mains
in multi-channel applications. Finally, in addition to the 5 analog inputs, the
DAC board enables the integration of any digital source into your home audio
system, via a USB or coaxial connection.
larger view
The highly competent analog design of the MD-309 Integrated Amplifier
necessitated a digital interface board that provided the same high level of
performance. This unique circuit design uses two industry leading core
components for the receiving and rendering of the digital signal, with the front
end of the board driven by the CS8416 192kHz Digital Audio Receiver from CIRRUS
Logic, capable of incredibly high performance standards.
Further, we have taken special care to feed the I2S signal through only state
of the art components, first through the PCM 2707 DAC chip, then the OPA 827 OP
AMP, recognized by many in the field as the best available. And when combined
with the Texas Instruments PCM1792, 200kHz current output Delta-Sigma
over-sampling DAC for audio rendering and the SRC 4192 full-time upconverting/upsampling
DSP, the signal is ALWAYS operating at 24 bit/192kHz, ensuring a perfectly
clocked, incredibly accurate output that is virtually jitter-free.
The sonic result of this elimination of jitter is immediately recognizable,
transforming any digital signal into a focused, clear and accurate signal in the
analog domain. This creates a product that is hugely scalable, allowing the
MD-309 Hybrid Integrated Amplifier to be a true anchor in your home
entertainment system.
Why an Integrated Amplifier?
A simple, one-package design of an Integrated Amplifier eliminates the
Interconnects and connectivity issues between the amp and preamp and the
potential mismatch in Impedance between the two pieces. It used to be said that
you could not get an Integrated amplifier with enough power and current to drive
some hard to drive speakers, the new MD 309 will drive any speaker on the market
today.
MD 309 Specifications
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Power Output
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225 Watts into 8 Ohms, 450 Watts into 4 Ohms
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Signal to Noise Ratio
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-110dB, A Weighted
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Audio Frequency Response (+/-0.1dB)
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+ Zero, -0.25dB, 2Hz - 100KHz
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Class of Operation
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Class A/B, Class A for 1-3 Watts
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Input Impedance
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10K
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Output Impedance after Volume Control
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2K (pre-out)
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Fully Balanced Amplifier Design
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10 Sanken Output Transistors per Phase (40 Total)
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Inputs
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5 Analog (2 balanced XLR, 3 single ended including
Surround Sound Processor input), 3 digital (2 Coaxial, 1 USB)
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Outputs
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1 line level pre-out
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Output Sensivity
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1.2V RMS
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Total Harmonic Distortion
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0.05% at any power
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Safety Diagnostic System
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Continuous of all Voltages and Current
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Dynamic Headroom
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+3dB
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Shipping Weight
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Shipping Weight: 65 lbs
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Dimensions (W.D.H.)
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19" x 20" x 6.5"
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Fuse Replacement
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120V, 10amp slow blow OR 240V, 5amp slow blow
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Tube Specifications
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2 x 6922 Cryovalve
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Warranty
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2 years
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