CLASSIC PRO / CPX4420 4-Channel Power Amplifier

The CLASSIC PRO 4-channel power amplifier CPX4420 delivers powerful, top-class sound with its lightweight construction and carefully selected components. Supporting three operating modes—stereo, bridge, and parallel—it offers flexible configuration to suit your sound system. This single unit can drive two main speakers, one monitor speaker, and one subwoofer. It's ideal for a wide range of applications, including talk events, dance performances, and live performances.

■Type: 4-Channel
■Stereo Output (4ohms): 600W x 4
■Stereo Output (8ohms): 420W x 4
■Bridged Output (8ohms): 1200W x 2
■Frequency Response: 20Hz-20kHz, +0-1dB
■Damping Factor: >200
■Input Connector: XLR
■Output Connector: Speakon
■Power Consumption: 570W (1/8 POWER)
■Dimensions: W48.2 x H8.8 x D27cm (excluding 3cm handlebars and 2.8cm rear rack ears)
■Weight: 16.7kg
■Detailed Specifications:
■Total Harmonic Distortion (THD): <0.5%, 20Hz-20kHz
■Slew Rate: >10V/µs
■Voltage Gain: 31dB
■Signal-to-Noise Ratio (20Hz-20kHz, A-weighted): >100dB
■Crosstalk: -75dB@1kHz, -58dB@20kHz
■Input Sensitivity: 0.775V or 1.4V
■Input Impedance: 20kΩ (balanced), 10kΩ (unbalanced)
■Protection Circuitry: Output Short Circuit, No Load, Mute On/Off, DC, RF (Radio Frequency) Interference
■Ventilation: Front to Rear
■Cooling: Built-in heat sink with forced cooling, adjustable fan, thermal protection circuit
■Amplification Method: Class H
■Power Cable: 1.8m, 2-pin

＜Key Features＞
■Sleek Black Panel, 2U Rack-mount design
■ High-efficiency heat sink and variable-speed cooling fan to prevent amplifier overheating
■ High-current toroidal transformer
■ Superior signal conversion circuitry minimizes distortion and delivers clear sound
■ Supports stereo, bridged, and parallel modes
■ Signal and clip indicators on each channel, built-in limiter for speaker protection, ON/OFF mute protection, DC protection, output short-circuit protection, overheat protection, and RF (high-frequency) interference protection
■ Output mute function protects equipment when protection circuitry is activated
■ Simple front panel design with only a gain control
■ Utilizes the latest SMD technology for greater stability and reliability
■ Balanced XLR inputs and outputs, Speakon output
■ 27cm depth for storage in an effects rack

*We generally do not provide loaner units when providing repairs or support. In the event of a malfunction, please return the unit to us, and we or the manufacturer will handle the issue in accordance with our support policy.