Powersoft Advanced Tech Duecanali 3904 DSP + AESOP
2-Channel Power Amplifier with DSP + AESOP Ethernet Interface


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The Powersoft Duecanali 3904 is a professional power amplifier designed to meet the most stringent requirements of professional users in professional fixed installations.

Designed by Powersoft R&D team, the Duecanali 3904 is exclusively built in Italy with internal components selected for premium quality and proven durability.

Each modular subassembly is pre-tested, and the assembled Duecanali 3904 receives a rigorous 48 hours burn-in before through final check-out on precision test equipment for total quality control.

The Duecanali 3904 incorporates the legendary patented Powersoft universal switching mode power supply up to 400VAC tolerant with Power Factor Correction providing users with worldwide AC acceptance and low consumption.

Powersoft bridgeable switch mode fixed frequency class D patented outputs provide high quality sound, excellent damping factor and cooler circuits for stable performances over time and longer amplifier life.

LCD display with lockable user menu for easy control of all amplifier settings.

Auxiliary inputs, triggered by 24V command input for alarm and pre-recorded emergency messages. Output relay for each amplifier channel for reporting single channel fault conditions.

DSP provides full high quality on-board sound processing. Sensing and communication board, standard on RS485 bus, Ethernet optional, provides full control and monitoring through Armonía Pro Audio Suite™, compatible with all other Powersoft K, M, D, Q and Ottocanali Series amplifiers.

Interface available for MediaMatrix, Crestron, AMX, and Q-Sys control and monitoring systems.

The Duecanali 3904 is able to drive 70V/100V lines without external transformers. Internal preset with HP filter and voltage limiter is required. 


  • Powersoft legendary universal switch mode power supply up to 400VAC tolerant with Power Factor Correction
  • Fixed frequency switch mode bridgeable output
  • Patented output filter with ripple cancellation network
  • LCD interactive display and front panel meters
  • Lockable user menu for setting max output voltage, max mains current draw, digital output attenuation, gain selection, gate selection, limiter and real time monitoring of: load impedance, AC mains voltage, output voltage, internal temperature with downloadable log file of all functional fault events with time related trace
  • Balanced, 3 pin Phoenix© type, analog and digital main and auxiliary inputs, outputs on 2 paralleled
  • Phoenix© type 2 pin connectors
  • Fully protected circuit design with:
    - AC protection: shut down power supply when
    - AC mains voltage is outside operating range
    - Turn on/off muting: for 4s at turn on and soon after turn off amplifiers outputs are muted
    - Clip limiter: prevents severely clipped waveforms from reaching loudspeakers, while still maintaining full peak power output
    - DC protection: protects against infrasonic signal at the outputs
    - VHF protections: protects the loudspeakers against non audible, strong, non musical very high frequency signals
    - Short circuit protection: protects the amplifier from short circuit or other stressful events for the output circuits
    - Thermal protection: when output rails reach 75°C (167°F) amplifier will reduce max output to help cooling while when rails reach 85°C (185°F) outputs will be muted
    - Long term limiter: protects the loudspeaker against steady long term rms (non audio) signals reducing maximum output
  • DSP, with fixed latency of 2 ms, with up to 48dB/oct IIR and FIR cross-over filters, up to 16 eq filters per output channel, up to 8s of total delay, peak limiter and true power limiter, patented damping factor and cable resistance compensation network
  • Optional Ethernet board travels, on the same CAT5 cable, control and up to 2 AES3 digital audio channels with full redundant ring topology
  • Temperature controlled continuous variable speed fan, front to back airflow
  • Smart card reader for preset load/save and firmware upgrades
  • Detachable AC mains cable with IEC C19/22.2 (16A for EU, 20 A for USA) socket
  • Modular construction
  • Control and monitoring through Armonía Pro Audio Suite™
  • Interface available for MediaMatrix, Crestron, AMX, and Q-Sys control and monitoring systems.

NOTE: For more information and specs on the Duecanali 3904 DSP + AESOP, please see the specs sheet found under the "Documentation" tab.

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