PDA540P  it provides 4 channels with output power of 4x500W @4 Ohm. Morever the low and mid channels can be bridged into a powerful configuration allowing power of 1kW@4/8ohm + 2x500W@4ohm in order to drive Subwoofers and satellites. In addition it offers a full set of added value features such as on board DSP and RS485 connection for monitoring and control via dedicated PC software.

The 4 output stages use the Class D module. The PDA540P  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, crossover filters, parametric EQs per input and output sections,RMS compressor, alignment delay, all in all everything needed to optimize a self-powered loudspeaker. Morever the efficient heat dissipation system and Over-Heat protection ensure uncompromised reliability. Furthermore the PDA540P is also equipped with a useful Pink/White noise generator. All setup parameters for input mixing, DSP features and the limiter setting are accessible by using the remote PC software.

Outstanding Performance	High power output: 4 x 500W@ 4Ω                                1000W@4/8Ω+2x500W@4Ω Switched-Mode Power Supply with PFC and auto voltage sensing Class D Amp Module - full bandwith PWM modulator with ultra low distortion Full protection circuitry including Over-Current, Over/Under-Voltage, Output DC and Over-Temperature Excellent sonic performance with 24bit high end converters coupled with 48kHz sample rate
Top-grade DSP Engine	5 band parametric equalization per input channel, selected as Bell, Low/High Shelving Q, HP/LP and Notch Filter 7 band parametric equalization per output channel, selected as Bell, Low/High Shelving Q, HP/LP and Notch Filter Input HP and Output HP/LP filters with slopes from 6dB/Octave up to -48dB/Octave including Butterworth, Bessel, Linkwitz-Riley Output features a precision dynamic range controller composed of a Peak Limiter Adjustable Delay time up to 960.998 ms for input and output channels Input channel includes a Noise Gate function, Pink/White noise generator, and RMS Compressor
Direct PC/Network Connection	Rs485 connection for system setup, monitoring and control via fully manageable remote PC software
Control	Simultaneous control up to 32 units via PC software 8 Preset Selection by using rotary encoder switch Security Lockout

Power & Amplifier section

Number of Channels	4 or 1+2
Max Output Power	4 x 500W @4ohm or 1000W @4/8ohm+2x500W@4ohm
Output Circuitry	Class D - full bandwith PWM modulator with ultra low distortion
Output Voltage	+/-70 V (SE Mode unloaded) / Bridged +/-140V(BTL Mode unloaded)
THD @ Rated power 4Ω (1kHz)	<0.01% (20 Hz - 20 kHz, 8Ω load, 3dB below rated power)
Signal To Noise Ratio	>102 dB (A-weighted, 20 Hz - 20 kHz, 8Ω load)
Frequency Response	20 Hz - 20 kHz ± 0,15 dB (8Ω load, 1 dB below rated power)
Damping Factor	>1000 (8Ω load, 1kHz and below)
Power Supplies	Switch mode power supply with PFC (Power Factor Correction) and integral standby converter
Operating Range	Universal Mains, 85-265V
Consumption / Current draw and Thermal dissipation @ 230 V	21W / -A / 44.3 BTU/h (Idle)    194W / -A / 143.4 BTU/h (I/8 max. power@4Ω)
Protections	Over-Current, Over/Under Voltage, Output DC and Over-Temperature, Short Circuit Protection
Analog Input	1 x XLR electronically balanced, +12dB
Analog Output	1 x XLR electronically balanced (Link)
AD & DA Converters	24bit
Frequency Response (DSP)	20 Hz - 20 KHz; -0.5dBu at 20 Hz and 20 kHz

DSP & Processing

DSP Engine	MARANI® DSP
DSP Resolution	24bit (data) x 24 bit (coeff.),54bit accumulation registers,  96 bit precision on intermediate processing data
Parametric Equalization	5 filters per input channel; 7 filters per output channel
Filter Type	Bell, Low/High Shelving Q, HP/LP and Notch Filter
Filter Gain	-15dBu up to +15dBu by 0.5dBu resolution steps
Center Frequency	Selectable with 1Hz resolution step from 20Hz up to 20kHz
Filter Q/BW	Bell Type Q: 0.4 up to 128 Lo/Hi-Shelving/HP/LP Type Q: 0.1 up to 5.1 Notch Type Q: 4 up to 104
Input HPF & Output HPF/LPF	Butterworth 6/12/18/24/36/48dB per octave; Linkwitz-Riley 12/24/36/48dB per octave; Bessel 12/24dB per octave.  Custom is also available
Input RMS Compressor (Auto Mode selectable)	Threshold from -18dBu up to +12dBu; Knee 0~100%; Ratio from 2:1 to 32:1; Attack time from 5ms up to 200ms; Release time from 0.1s up to 3s
Output Peak Limiter	Threshold from -18dBu up to +12dBu Attack time from 1ms up to 900ms; Release time from 0.1s up to 5s Make up from 0~+12dB
Input Noise Generator	White/Pink Noise, from -40dB to 0dB
Delay	960.998 ms, 20.8us increment/decrement steps per channel
Ground Noise	-86dBu

General

User Preset	8
Front Panel	GAIN pot. -30dBu ~ 0dBu PRESET EQ 8 positions Rotary encoder switch Red LED (Power); Yellow LED (Link); Green LED (Signal presence) 1 x XLR female connector (Input) 1 x XLR male connector (Link Output) 2 x RJ45 connector (M-LAN Rs485) 2 x Locking PowerCON® 20A: AC Mains (blue) - AC Link (white)
Dimensions	19.23“ x 3.15" x 5.98"(488x80x152mm)
Weight, Net / Shipping	6.09 lbs (2.76 Kg) / 8.83 lb (4 Kg)