The DP-i Series brings together Wharfedale Pro’s advanced amplifier technology into configurations optimised for fixed installations.

With two models – DP-4035i and DP-8015i – the series offers flexible power options, GPIO functionality, and tamper-resistant design.

Whether you’re driving low-impedance or high-impedance loudspeakers, the DP-i Series ensures reliable performance with ease of installation at its core.

Both models are purpose-built for installers:

• Rear-mounted power switches prevent tampering in public or commercial environments.

• Euroblock (DP-4035i) and Phoenix (DP-8015i) connectors simplify setup and ensure long-term reliability.

• Magnetically-secured front grilles provide easy access for maintenance and cleaning while protecting front panel controls.

• The DP-4035i also features a tamper-proof volume control cover, adding an extra layer of security.

• A compact 1U rackmount design makes both amplifiers easy to integrate into standard racks.

The DP-i Series supports GPIO connections for greater flexibility and automation:

• DP-4035i: Allows remote level adjustment using a 10 kΩ potentiometer (not included). Ideal for simple volume control from a distance.

• DP-8015i: Expands GPIO capability with remote ON/OFF control and system linking functions, enabling full integration with more complex, automated systems.

Both models include all required GPIO connectors out of the box, making installation quick and hassle-free.

Let’s keep it simple: PFC boosts amplifier efficiency and regulates power delivery, especially when AC power fluctuates.

Combined with the internal Switch Mode Power Supply, PFC ensures both models maintain consistent performance and stability – even under challenging power conditions. This means fewer shutdowns, better heat management, and greater overall reliability.

The DP-i Series is built for flexible system design:

DP-4035i

• Delivers 4 x 765 W into 2Ω or 100 V high-impedance lines.

• Supports up to 80 i8T loudspeakers (20 per channel tapped at 25 W) on a 100 V system.

• Internal High Pass Filter (HPF) at 40 Hz protects against transformer saturation.

• Automatically engages limiters for safe 70 V / 100 V operation.

• Rear DIP switches allow switching between Hi-Z and Lo-Z modes and adjust input sensitivity (0.775 V or 1 V).

DP-8015i

• Drives 8 x 150 W into 70 V / 100 V or 2–8Ω low-impedance lines.

• Bridge mode offers 4 x 300 W for more demanding setups.

• Caution: Always measure your system’s total impedance before connecting.

• If the measured load is too low, re-tap speakers at a lower wattage to raise impedance and prevent amplifier stress.

DP-4035i

• Rear panel DIP switches give access to core settings.

• Selectable input sensitivity (0.775 V / 1 V)

• Mode switching for Hi-Z / Lo-Z operation.

DP-8015i

• 1.8″ colour display allows quick monitoring and editing from the front panel.

• Visual status LEDs for signal, clipping, and protection offer at-a-glance system checks.

The DP-i Series is designed to handle the demands of permanent installations:

• Overload protection

• Short-circuit protection

• Over-temperature shutdown

• Under-voltage detection

These systems are built for long-term performance, whether installed in a school, commercial venue, or hospitality environment.

DP-4035i Example:
Ideal for larger 100 V distributed systems – such as retail spaces or hotels – where it can drive up to 80 i8T loudspeakers on a single 4-channel amp.

DP-8015i Example:
Perfect for multi-zone installations like restaurants or educational campuses where 8 channels or bridged power options provide flexible coverage.