MDA3-100M is highly flexible and intelligent digital audio 3 Channels Class D power amplifier delivering up to a total of 600W@4/8Ω. To guarantee maximum reliability, for the 2 powered channels, the MDA3-100M includes one MARANI® SMPS and 3 highly efficient Class D Power Stages, 2 working in SL mode and one in BTL, for powering the Sub output. The 3 output stages are very low noise and low distortion with efficiency up to 90% @ full load and also equipped with a full set of circuit protections. Designed to meet the most demanding residential application sound systems, it provides a basic set of features such as a matrix mixing mode where inputs may be routed/mixed in any ratio to any output.

The MDA3-100M  includes a set of sophisticated processes for  loudspeaker, implemented by the powerful MARANI®  DSP running 48kHz/24bit [96 bits precision for the internal intermediate processes] and high performance 24bit AD/DA Converters. Processes as Noise Gate, dB/Oct IIR Hp/Lp filters for X-Over, parametric EQs per input and output sections, RMS compressor(Auto Compressor), alignment delay and Notch, Variable Q Hi/Lo Shelving and Hi/Lo Pass filters are availabl, all in all everything needed to optimize powered loudspeaker.Moreover a Overflow/Limiter function per channel provides internal processes monitoring to prevent Overflow Clipping to occur, in order to avoid feeding Class D amps with clipped waves and finally, jointly with a powerful embedded Clip Limiter, to avoid speaker damage with gain reduction at clip threshold. In addition, efficient heat dissipation system and Over-Heat protection a reimplemented, which ensure  reliability without compromises. All setup parameters for input / output processes , DSP features are accessible by using remote PC software.

Outstanding Performance	High power output: 2 x150W@4ohm + 1 x 280W@ 8 Ohm One MARANI® SMPS and 3 Class D power Stages. Class D output stages with Efficiency up to 90% @ full load Full protection circuitry including Over-Current, Over/Under-Voltage, Output DC and Over-Temperature Excellent sonic performance with 24bit high end converters running 48kHz sample rate, 3 outputs(L/R/Sub) with full matrix mixing and extended Sound Processes set
Top-grade DSP Engine	12 bands PEQ filters per input channel 5 bands PEQ filters per output channel Each band can be selected as Bell, Lo-/Hi-Shelving, HP/LP and Notch filter HP/LP filter with slopes from 6dB/Octave up to 24dB/Octave including Butterworth, Bessel, Linkwitz- Riley. Gain Control, Noise Gate, RMS Compressor  Adjustable Delay time up to 80.998 ms per input channel and 50.998ms per output channel.
Direct PC/Network Connection & Control	Front Panel USB for system setup, monitoring and control via manageable remote PC software Simultaneous control up to 32 units via PC software 16 Preset Selection

Power & Amplifier section

Number of Channels	3 Powered output: L/R/S
Max Output Power @ 8 ohms	2 x 150W@4ohm + 1 x 280W (Bridge) @8 ohm
Output Circuitry	Class D Amplifier Module
Power Supply	Independent MARANI®  SMPS
THD + N	L/R: 1%; Sub:0.26%
S/N Ratio	L/R: 100dB; Sub: 98dB
Consumption/Current draw and Thermal disspation @230V	Sleep Mode: 4.8W/0.078A. Idle: 23.8W/0.175A Standby Mode:4.8W/0.078A
Protections	Over-Current, Over/Under Voltage, Output DC and Over-Temperature
Analog Input	2 x RCA A/B Unbalanced
Maximum Input/Output Level	+12dB

DSP & Processing

DSP Engine	1 x MARANI® DSP
DSP Resolution	24 bit (data) x 24 bit (coeff.), 54 bit accumulation registers 96 bit precision on intermediate processing data
Input Type Selection	Analog Inputs
Noise Gate	Threshold from -90dBV up to -60dBV, 5dBV Steps Attack time from 1ms up to 1000ms; Release time from 10ms up to 1000ms
Input 12-band PEQ  Output 5-band PEQ	Peaker, Q from 0.4 up to 128, Gain +/-12dBu, Center Freq from 20 to 20kHz Variable Q Hi/Lo Shelving, Q from 0.1 up to 5.1, Gain +/-13dBV, Center Freq from 20 to 20kHz Variable Q Hi/Lo Pass, Q from 0.1 up to 5.1, Cutting Freq from 20 to 20kHz Notch, Q from 4 up to 104, Center Freq from 20 to 20kHz
Input RMS Compressor	Threshold from -18dBV up to 12dBV; Make Up from 0 to +12dB Knee 0~100%; Ratio from 2:1 to 32:1； Release time from 100ms up to 3s (100ms resolution); Attack time from 5ms up to 200ms
Output HPF/LPF section	Butterworth 6/12/18/24dB per octave,  Bessel, Linkwitz-Riley 12/24dB per octave, Filter frequency resolution 1Hz
Output Peak Limiter	Threshold: -18dBV ~ +12dBV, Attack time: 1ms ~ 900ms, Release time: 100ms ~ 5sec
Delay	Each input channel’s selectable delay is up to 80.998ms, each output channel’s up to 50.998ms

General

Front Panel	1 x rotary encoder, to load or select presets 1 x Type B USB 1 x Standby button 1 x 2*16 LCD screen 1 x Power Switch 3 x Green-Red LED, indicating distortion and signal for each channel: red indicates distortion and clip , while green signal
Rear Panel	4 x RCA Connectors (Analog Input & Output) 6 x Binding Post (Amplifier Output) 1 x 110V/230V Voltage Switch 1 x Locking PowerCON® 20A: AC Power Cord (Blue)
Dimensions	482 x 247 x 88 mm
Weight, Net / Shipping	5.20 kg/ 6.00 kg