Quattrocanali 2404 is a 4 channels class D power amplifier

Class D amplfier

4 channels (bridged)

4 x 600 W, 4Ω

Quattrocanali 2404 is a 4 channels class D power amplifier usuable with with all APG speakers ranges depending on the desired application.

The 4 channels can work with different loads above 2 Ohm or in 100V line. Mixed configuration can be made. When important power is needed to drive subwoofer for exemple, the amplifier can work in bridged mode. Dedicated to fixed installation, Quattrocanali has an important efficiency. The electric consumption and the heat dissipation is weak compared to the output power. The protection against over/under voltage, clipped signals, VHF emissions, and short circuits make the amplifier reliable. Quattrocanali 2404 is equipped with GPI connector for external VCA volum control and alarm GPO connectors. An ethernet port makes the control by external device possible.

Quattrocanali 2404 exists with an integrated DSP processor and Dante Input under the reference Quattrocanali 2404 DSP+D. Quattrocanali 2404 DSP+D will offer a 4 x 4 matrix or all analogue and digital inputs. Integrated in the DSP will offer filters per channel offering aised-cosine, custom FIR, parametric IIR, peaking, hi/lo-shelving, all-pass, band-pass, band-stop, hi/lo-pass filters and a crossoverlinear phase (FIR), Butterworth, Linkwitz-Riley, Bessel: 6dB/oct to 48 dB/oct(IIR). For time alignment the DSP in the amplifier will offer Delay 2s (input) + 100ms (output). The limiters in the DSP will contain TruePower™, RMS voltage, RMS current and Peak limiters. Active DampingControl™ and Live Impedance™ measurement will be part of the DSP.


• High audio quality
• Performance and high power efficiency
• Protection circuits for reliability
• Control software


• High sound quality amplification
• Medium to large size APG systems


Number of channels


Output power

Stereo mode, 4 Ω/ch

Mono bridged mode, 4 Ω


4 x 600 W

4 x 1600 W


AC mains power  

Power supply

Universal, fixed switching frequency with PFC (power factor correction)



Gain (selectable via user menu)

26 dB          29 dB          32 dB          35 dB

Frequency response

20 Hz - 20 kHz (1 W @ 8 Ω, ±0.5 dB)

S/N ratio

>104 dBA (20 Hz - 20 kHz, A weighted)


<0.1% de 1 W jusqu'à puissance max (typiquement <0.05%)


Front face  


7 meters LEDs per channel (4 x green, 1 x red, 1 x yellow, 1 x orange)


Back side  

Audio signal input connectors

Phoenix MC1.5/12-ST-3.81

Loudspeaker output connectors

Phoenix DFK-PC 4/8-G-7.62

Networks data ports

1 x RJ45 fast Ethernet - DANTE (DSP + D version)

1 x RJ45 socket - RS485 (no DSP version)

Software controls




Dimensions (L, H, W)

483 x 44.5 x 360 mm


7 kg