Stable down to 2 Ohms, the Wharfedale Pro DP-4035i Amplifier is a 4-channel amplifier from our DP-i Series, designed specifically for fixed installations requiring power, flexibility and long-term reliability. Delivering 450 W per channel at 8 Ω, 765 W at 4 Ω, and up to 1530 W bridged at 8 Ω or 4 Ω, it provides consistent performance across both low and high-impedance systems — including 70 V and 100 V Hi-Z operation. Built with installation practicality in mind, DP-4035i features Euroblock connectors, GPIO control and a rear-mounted power switch. A tamper-proof front grille protects the channel level controls for secure setup in public or commercial spaces. Selectable input sensitivity (1 V or 0.775 V) ensures compatibility with a wide range of sources, while a wide-range AC input maintains stability in environments with fluctuating mains voltage. Efficient, durable and versatile — DP-4035i is the perfect amplifier solution for professional installed sound systems. Specification Value Amp Channels 4 Topology Class D Stable at 2 Ohms Yes 8Ω 4 x 450 W 4Ω 4 x 765 W 2Ω 4 x 765 W 16Ω Bridged 2 x 900 W 8Ω Bridged 2 x 1530 W 4Ω Bridged 2 x 1530 W Control GPIO Input Connectors Phoenix MC 1, 5/12-ST-3, 81 Output Connectors Phoenix PC 5/8-STF1-7, 62 Link Connectors Phoenix MC 1, 5/6-ST-3, 81 Mode Switch Lo-Z / Hi-Z / 100 V / 70 V / Mono / Bridge Mode Hi-Z Yes 100V Hi-Z 4 x 765 W 70V Hi-Z 4 x 450 W Input Gain/Sensitivity Switch 0.775 V / 1 V Slew Rate >50 V / us Output RMS Voltage (V) 60 V THD N Typical : 0.05% (10% Rated Power, 8 Ω) Crosstalk ≥90 dB (20 Hz-1 kHz, Below Rated Power) Amplifier Frequency Response Typical: ±0.5 dB (10% Rated Power, 20 Hz-20 kHz) Amplifier Input Impedance 20 kΩ (Balanced), 10 kΩ (Unbalanced) Damping Factor Typical: 300 (20 Hz-200 Hz, Lo-Z, 8 Ω) SNR ≥100 dB (A Weighted, 20 Hz-20 kHz, 8 Ω) Protection Under voltage, DC, Over temperature, Limiter, Overload, Short. Main Power 100-240 V AC. ±10%, 50/60 Hz Included Accessory User Manual, 4 x rubber feet, 5 x Phoenix 6P-3.81 mm plug, 2 x Phoenix 4P-7.62 mm plug, AC Power cord Unpacked – Height (mm) 45 Unpacked – Width Front (mm) 483 Unpacked – Width Rear (mm) 483 Unpacked – Depth (mm) 370 Packed – Height (mm) 125 Packed – Width Front (mm) 510 Packed – Width Rear (mm) 510 Packed – Depth (mm) 565 Weight – Nett (Kg) 8.4 Weight – Gross (Kg) 10.5 DP-4035i – Wharfedale Pro
