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MARANTZ - MA-9S2 REFERENCE MONO POWER AMP (EA)

For Those Who Demand The Very Best - The Marantz Reference MA-9S2

Far more than massive current capability elegantly housed in brushed aluminum, the MA-9S2 thoroughly updates the performance of our original Model 9.  It’s the culmination of more than a half-century’s effort in reproducing audio in the home.  Of course, this must be a Marantz. A major untertaking, the engineers at Marantz tore apart the MA-9S1 and redesigned it from the ground up to be even faster, with less noise, and more authority. The MA-9S2 represents over 50 years of expertise in amplifier circuitry, and sincere love of music. 

When you first see the MA-9S2, you’ll be impressed with its clean yet purposeful look.  The 35mm-thick aluminum chassis and double-layer bottom plate forms an extraordinary rigid structure.  Copper coating isolated delicate internal circuitry from extraneous interference.

Power output is the same (300 watts into 8 ohms, 600 watts into 4) as that of the MA-9S1.  This “double down” capability speaks directly to the MA-9S2’s current delivery prowess and, consequently, its ability to absolutely control any loudspeaker.  Although this “brute force” approach might be adequate for some, the S2 incorporates several advances designed to further improve sound quality.  

First, consider the power supply.  The toroid power transformer benefits from a newly-developed “dual hemisphere” design with acoustical isolation augmented by silicon steel and a damped aluminum case.  This greatly reduces internal vibration and sets the stage for finer resolution of sonic nuances.   Shottky barrier diodes provide rectification for the voltage amplification stage to eliminate subtle ripples that can negatively impact overall clarity.  Finally, the storage capacitor bank so important for the current amplification stage is 50% larger than that used in the S1 for even more prodigious yet superbly controlled bass response.  

In addition to fully balanced differential topology, the S2 uses current feedback implemented with six HDAM-SA modules for faster response and lower noise. 

Specifications:

300 Watts into 8 Ohms, 600 Watts into 4 Ohms
>150 Amps Peak Current Supply
Custom HDAM® SA Modules
Full Current Feedback Amplifier Stage
Double Shielded Low noise Toroidal Transformer
Fully Balanced Amplifier Design
Choke Input System Power Supply
Custom Extruded Aluminum Heat Sink
Heavy Gauge Internal Wiring
All Copper Plated Chassis and Double Layered Bottom Plate
Dual WBT®  Speaker Outputs