Beta Three DT8004 4-Channel Class D Power Amplifier

Beta Three DT8004 4-Channel Class D Power Amplifier – Serious Output for Installed PA

Large venues and multi-zone installations do not fail for lack of speakers – they fail for lack of clean, sustained amplifier power behind them. The Beta Three DT8004 is a four-channel Class D power amplifier built for that duty, rated by its manufacturer at 1500 watts per channel into 8 ohms and 2500 watts per channel into 4 ohms. Four independent channels in one unit simplify rack planning for auditoriums, houses of worship, banquet venues and live PA systems driving passive loudspeakers that need real headroom.

Key features

• Four independent power-amplifier channels in a single unit
• Class D output stage for high power with efficient operation
• 1500 W per channel into 8 ohms, as rated by the manufacturer
• 2500 W per channel into 4 ohms, as rated by the manufacturer
• Balanced XLR signal inputs for clean, noise-resistant runs
• NL4-type speaker outputs, the professional standard for PA cabling
• Suited to rack-based installed sound and touring-style PA systems
• Designed for passive loudspeakers – pair with a mixer or system processor upstream

Reading the power figures correctly

Amplifier power only means something with its load attached, so keep the conditions with the numbers: 1500 W per channel at 8 ohms, 2500 W per channel at 4 ohms. The model number is an identifier, not a wattage promise at every impedance. What matters for system design is matching each channel’s rating to the cabinets actually connected – their impedance, their power handling and how many share a channel – and leaving headroom so the amplifier works comfortably below its limits on programme material, not at them.

Why four channels change the rack plan

Four channels let one amplifier drive, for example, left and right mains plus two monitor sends, or four separate zones in an installation, with independent level behaviour per circuit. That reduces rack count, simplifies power distribution and keeps a system expandable: add cabinets per channel within the rated load rather than replacing the amplifier. Class D efficiency also means less heat to manage in a closed rack than an equivalent bank of older amplifier designs.

Where it earns its keep

Auditoriums, banquet halls, clubs, houses of worship and rental PA systems driving demanding passive cabinets are the DT8004’s home ground. It is a power amplifier only – source selection, microphone preamplification, mixing and system processing belong to the mixer or DSP upstream of it, and active loudspeakers, which carry their own amplification, need a different plan entirely.

Setup and safety notes

Wire speakers with power off and levels down, calculate the load on every channel before combining cabinets, and confirm the electrical supply matches the unit’s rating label. Keep ventilation paths clear in the rack, power the amplifier up after upstream equipment, and raise levels gradually while watching for clipping or abnormal behaviour. Set crossover, limiting and protection in the system processor for the actual cabinets connected.

For installers and sound companies who need four channels of genuine PA output in one box, the DT8004 is built to anchor the rack.