You are here:

Overview

PRO4.0 offers 400 watts at 8Ω stereo. Each channel works at 2Ω to satisfy all requirements.

PRO4.0 adopts Audiocenter latest Class H+ circuitry to eliminate the Class H cross switching distortion.

PRO4.0 has very clear and clean sound and high damping factor. This makes PRO4.0 suitable for any kind of application, from high power loudspeakers to critical monitoring where very high requirements are mandatory. It can be widely used in fixed installation and touring performance such as bar, nightclub,  multi-functional hall, museum, religious venue, commerce site, lecture hall, wedding ceremony, etc.

Features

  • A-Guard Protection System

A-Guard is Audiocenter comprehensive protection system which includes optimized limiter circuit. Unlike other solutions which depend on separate circuits to address different problems, A-Guard was developed as centralized solution where all protection requirements work together in perfect harmony. A-Guard is only applied when it’s necessary to protect the amplifier. This is the reason why PRO amplifiers are able to sustain full power output even under complex capacitive loads.

  • Smart Overheat Management

The smart overheat management of PRO series adopts unique circuitry to monitor the amplifier’s temperature in real time. When the safe operation of the amplifier is compromised, the output power is reduced but not shut down, which ensures the system can work normally in high temperature environment.

  • Class H+ Circuit Design Eliminates Cross Switching Distortion

PRO series adopts Audiocenter latest Class H+ circuit to eliminate the Class H cross switching distortion. The result is the same low distortion as Class AB. All PRO amplifiers have less than 0.05%THD at 16KHz and the sound is so clean and natural.

Core Components

Specifications

Rated Power(20Hz-20kHz, <0.1%THD)  

2×400W@8Ω stereo

2×600W@4Ω stereo

2×800W@2Ω stereo

1200W@8Ω bridge

1600W@4Ω bridge

A-Guard Protection System

DC protection / Short circuit protection / Smart overheat management / Overheat protection / Input overload protection / Output overload protection / Soft startup protection / Limiter protection Up to 9V

Frequency Response(1W 8Ω stereo)

20Hz-20kHz(±0.5dB)

Sensitivity

0.775V / 32dB / 26dB

Input Connectors

Output Connectors

Male XLR & female XLR

3× Speaker connector

Filter Capacitor Capacity

10000μf / 50V×8

Input Impedance

Balanced 20kΩ / Unbalanced 10kΩ

Crosstalk(20Hz-20KHz, Rated power 8Ω)

≥65dB

S/N Ratio(Rated power 8Ω, A weighted)

≥108dB

Damping Factor (1kHz&8Ω)

≥500

Intermodulation Distortion(20Hz-20kHz, half power)

≤0.05%

Total Harmonic Distortion(20Hz-20kHz, rated power 8Ω)

≤0.05%

Phase Response(1W&8Ω, 20Hz-20kHz)

20Hz+4° 20kHz-12°

Slew Rate

≥45V/μs

Output Circuitry

Class H+

Power Consumption(Dual channel driven 4Ω,1/ 8RMS / 230V)

1.8A

Rack Space

2U

Cooling

Back to front  venting, mandatory cooling

Dimension (W×H×D)

483×88×456mm

Net Weight

18.0Kg

PRO4.0

Class H+ amplifier

PRO4.0 offers 400 watts at 8Ω stereo. Each channel works at 2Ω to satisfy all requirements.