quattro 4804


Amplificateur 4 canaux installation fixe

1500W/2 ohms
Powersoft universal switch mode power supply up to 400VAC tolerant
Monitoring and Processing
Fully protected circuit design

Quattrocanali 4804 offers the traditionally amazing sound quality and reliability of all Powersoft products. The patented SRM (Smart Rails Management) technology allows to maximize the the efficiency of the system and drastically reduce power consumption at any load and usage condition. Quattrocanali features the lowest thermal dissipation in the industry, reducing the need for external cooling devices. Quattrocanali is designed to work with lo-Z (from 2 ?) and with 70V/100V distributed lines: any mixed impedance output loads may be realized. DSP+D versions of the Quattrocanali grant in depth control and monitoring of all the signals via Armonìa, so that the sound may be tailored to suit the customer’s needs. This Amplifier Platform can also be trusted in mission critical applications, such as fire alarm systems, thanks to the cleverly engineered power supply that allows reliable operation even when connected to a UPS.

Power supply

Powersoft legendary universal switch mode power supply up to 400VAC tolerant with Power Factor Correction
Low Inrush Limiting reduces AC inrush current, removing the need for expensive power sequencers
Detachable AC mains cable with IEC C19/22.2 (16A for EU, 20 A for USA) socket

Fully protected circuit design with:

Ac protection: shut down power supply when AC mains voltage is outside operating range
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 high frequency signals
Short circuit protection: protects the amplifier from short circuit or other stressful events for the output circuits with automatic protection reset
Long term limiter: protects the loudspeaker against steady long term rms (non audio) signals reducing maximum output
Thermal protection: output stages operating temperature up to 80 °C (176 °F)
Temperature controlled continous variable speed fan, front to back airflow
Temperature forecast with LCD traced historical behaviour


Fixed frequency switchmode output stage for high grade sound accuracy
Compact size – all models only 1 RU for reduced rack cost and space
Light weight – for easier racking and shipping: 7 kg (15.4 lbs)
Standard Phoenix connectors: analog audio outputs, aux supply, alarms and GPIO
Remotely switchable double input (main and aux) per channel


Built-in defeatable clip limiters for each channel
Digital gain-attenuator control
Defeatable gate selection for each channel
User selectable gain/sensitivity
User selectable maximum output power for each channel
User selectable maximum mains current draw
Lockable set-up by user selectable access key code
Built in remote control via the RS-485 interface provides full diagnostic, operational setting and system monitoring


Hardware monitor available for fast local diagnostic
Load impedance measurement for each channel
Output power measurements for each channel
Mains voltage and current measurements
Downloadable log file of functional fault events with time related trace

Digital Signal Processing*

Convertitori AD/DA dual 24 bit @ 48 kHz architettura TANDEM®
Equalizzatori input/output indipendenti con PEQ, raised cosine, filtri shelving IIR e FIR personalizzati
ActiveDampingControl™ per la compensazione delle perdite del cavo
Limitatori peak, RMS voltage, RMS current, TruePower™

Remote management

Control and monitoring through Armonía Pro Audio Suite™
Dedicated Web App
* = DSP+D version