Burl Audio BDA4 4-Channel DAC Option Card for B80 Mothership

Give your digital mixes the weight, dimension and analog character that make every instrument feel more alive. The Burl Audio BDA4 4-channel DAC daughter card for B80 Mothership combines four channels of professional digital-to-analog conversion with Burl's NextGen Analog technology, discrete Class-A circuitry and renowned BX5 nickel-core output transformers. Designed for the B80 and B16 Mothership platforms, the BDA4 builds on the legacy of the B2 Bomber DAC and BDA8, introducing the newly developed BOPA14 op-amp for improved clarity, tighter bass and greater definition across the frequency spectrum. Its transformer-coupled architecture adds harmonic richness and depth to drums, bass, guitars, vocals and complete mixes, making it a powerful addition to professional recording, mixing and mastering workflows. With 115dB dynamic range, support for sample rates up to 192kHz and four XLR outputs, the BDA4 delivers high-fidelity conversion with the distinctive analog character that defines Burl Audio.

NextGen Class-A Circuitry and BX5 Transformers Deliver Analog Depth

The BDA4 incorporates Burl's BOPA14 discrete Class-A op-amp, developed through extensive listening tests to deliver improved low-frequency definition, clarity and detail compared with previous analog designs. Its minimalist transistor architecture provides a high-performance analog signal path that preserves musical detail while complementing the character of Burl's transformer-based conversion technology. Following the BOPA14 circuit, the BX5 nickel-core output transformers introduce additional weight, harmonic richness and dimensionality to the converted signal. These are the same transformer designs featured in Burl's acclaimed B32 VANCOUVER MIX BUS, bringing their distinctive sonic character to individual tracks and stereo mixes. When paired with compatible Burl analog-to-digital converters featuring BX1 input transformers, the BDA4 also supports analog processing loops that add transformer coloration without introducing the tape hiss associated with traditional analog tape workflows.

Selectable DAC Filtering and Avid Delay Matching Support Studio Integration

The BDA4 provides additional control over conversion character through a selectable DAC filter, allowing engineers to move between the classic Burl sound and a more aggressive response with a forward midrange. Avid delay matching helps align output timing with compatible Avid interfaces, supporting accurate synchronization when using external hardware inserts in professional recording sessions. Four XLR outputs provide straightforward connectivity with analog processing equipment and studio monitoring systems, while a frequency response extending from 10Hz to 22kHz at 48kHz sampling and up to 30kHz at 96kHz and 192kHz sampling supports detailed audio reproduction. With 115dB dynamic range, -96dB THD+N and a full-scale output level of +22dBu, the BDA4 is engineered for demanding mixing and mastering applications. Built in the USA with rugged construction, the Burl Audio BDA4 provides a flexible way to expand Mothership conversion capabilities while adding the clarity, depth and distinctive transformer character of Burl's NextGen Analog technology.