Premium audio brand, Theory Audio Design, announces the DLC-250.4 distribution loudspeaker controller. Ideal for any residential or commercial installation where distributed audio is desired, each DLC-250.4 offers 4-channels of intelligent power, a full DSP matrix, and is TCP/IP controlled through a wired connection, or directly via its on-board Wi-Fi access point.

Theory’s product ecosystem is unique in that offers many of the performance qualities of professional audio products – effortless dynamics, high efficiency, and rugged durability – but with the sonic delicacy, detail, and resolution of the best high-end high-fidelity products. Add Theory’s intelligent full-system design approach, with automatically tailored loudspeaker DSP, and you get startling performance at tremendous value.

The DLC-250.4 is a flexible and powerful half-rack amplifier/controller solution for any residential or commercial distributed audio application.


The DLC-250.4 is designed to be at the core of every Theory distributed audio system. With channel-pair power sharing of up to 250W, each DLC-250.4 offers the flexibility to power any system size. Via its configurable outputs, the DLC-250.4 can power up to 16 Theory 16-ohm ceiling or pendant loudspeakers in Lo-Z mode, and up to 64 Theory architectural speakers in Hi-Z mode – or an optimal hybrid of both or in any quantity in between. This feature is especially beneficial in commercial spaces like bars, restaurants, retail environments, fitness centers, and spas where a combination of power, from quiet background to loud foreground audio, is required.

Commercial Applications

In hotels, education facilities, and corporate environments where there are multiple rooms of varying sizes, the DLC-250.4 offers complete flexibility in terms of available power. The S/PDIF master/slave functionality allows multiple DLCs to be used to cover all these needs and each loudspeaker controller only takes up a half rack space. House of Worship requires reliable, high-quality amplification of voice, while also covering a large distribution area with many specialized speakers. The DLC-250.4 is up for the challenge, providing high-quality amplification and superior speech intelligibility throughout large spaces. For home cinema and surround sound systems, a single DLC-250.4 is also perfect for 3.1 systems (and larger if using multiple DLCs).

“Because the DLC can operate in both 8-ohm or 70V/100V modes, separately or in combination, and because all of our architectural loudspeakers have the same dual operation, systems of any size or complexity can easily be realized from a tiny half-rack space unit”, said Paul Hales, president of Theory Audio Design. “And because our ceiling and pendant models can operate at 16-ohms, up to 16 speakers can be powered from a single half-rack unit without the need to invoke the 70V transformers; this is remarkable from a 6-pound amplifier and insures the highest possible fidelity even in systems with a high quantity of speakers”.


To rack mount or wall/surface mount the DLC-250.4, Theory offers two complementary accessory kits. The DLC-250.4 is safety and EMC certified and compliant to ErP and EnergySTAR*. Later this year, a Dante-enabled version of the DLC-250.4, the DLC-250.4d, will offer even further installation flexibility and simplicity by adding Dante network audio and AES67 compatibility. A full list of DLC-250.4 specifications is available below.

The DLC-250.4 is available to order now for $1,950/each US MSRP and will begin shipping in May. Interested dealers, reps, and international distributors are encouraged to reach out to Theory’s VP of Sales, Mark Goldman, at: for more details.

For more information on the DLC-250.4 and on Theory Audio Design, please visit