Audibax Pro PA4250T - 19″ 4×240 W Installation Amplifier (Class D, Low-Z/70/100 V)

Audibax Pro PA4250T - 19″ 4×240 W Installation Amplifier (Class D, Low-Z/70/100 V)

The Audibax Pro PA4250T is a 4-channel installation amplifier in a 19″ (1U) rack format that combines Class D efficiency with flexible operation in low impedance (4–16 Ω) and 70/100 V lines . Designed for 24/7 projects, it incorporates independent gain per channel , DIP-switchable high-pass filter , auto-standby , and indicators per channel, which facilitates zone balancing and maintenance. With 4×240 W RMS at 8 Ω , frequency response 20 Hz–20 kHz (bypass) and complete protections, it is a robust and tidy solution for professional background music and PA.

Main features

• 4×240 W RMS at 8 Ω with high efficiency Class D architecture.
• Hybrid outputs : Low-Z (4–16 Ω) and 70/100 V per channel.
• Channel control : rear gain and DIP switchable high pass filter .
• Auto-standby after no signal and automatic reactivation upon audio detection.
• Euroblock balanced inputs (4 channels) for clean rack integration.
• Speaker outputs via Euroblock with screw for secure wiring.
• Electrical performance : SNR > 80 dB , crosstalk > 60 dB , THD < 0.1 % @ 1 kHz, 100 W.
• Protections : against short circuit, overload, high temperature, clip and DC.
• Universal source : AC 100–240 V, 50–60 Hz .
• Dimensions and weight : 484 × 420 × 44 mm ; 8.8 kg .

Product benefits

• One stage, multiple scenarios : Low-Z and 70/100V compatibility simplifies design and reduces inventory.
• Quick and tidy installation : Euroblock connectivity on inputs and outputs for professional wiring.
• Reliable 24/7 operation : Class D efficiency, auto-standby and protections that extend the life of the system.
• Zone-based fine-tuning : switchable channel gain and HPF to optimize intelligibility and headroom.

Use cases

• Retail and hospitality : multi-zone ambient music with long runs at 100 V.
• Education and corporate : classrooms, auditoriums and offices with PA systems and discreet sound reinforcement.
• Sports and leisure centers : uniform coverage in large areas with simple management.

Frequently Asked Questions

• What is the power per channel? 240 W RMS at 8 Ω per channel (4 independent channels).
• Does it work on 70/100 V? Yes, each channel can operate on 70/100 V or Low-Z (4–16 Ω).
• Does it have DSP or network? This model focuses on analog control (gain/HPF/auto-standby). For DSP and IP control, see the MA DSP series.

Description for projects

4-channel Class D installation amplifier in 19″/1U rack ; 4×240 W RMS power at 8 Ω ; Low-Z (4–16 Ω) and 70/100 V operation; balanced Euroblock inputs (4 channels) with gain per channel ; DIP-switchable high-pass filter ; auto-standby ; Euroblock screw outputs ; performance: SNR > 80 dB , crosstalk > 60 dB , THD < 0.1 % @ 1 kHz, 100 W ; AC 100–240 V, 50–60 Hz ; 484 × 420 × 44 mm ; 8.8 kg .