Sony XLR-A4 XLR Adaptor

What’s new?

The Sony XLR-A4 builds directly on the earlier XLR-K3M, adding higher-resolution 96kHz recording, 32-bit float capture, dual ADC processing, and USB audio output. Where the XLR-K3M required more careful gain management during unpredictable recording, the newer adaptor captures a far wider dynamic range before clipping occurs, making it easier to recover both quiet dialogue and sudden peaks during editing. Sony has also revised the physical layout with updated controls and a longer 60cm extension cable, giving crews more flexibility when positioning the adaptor on cages, gimbals, or compact cinema rigs.

32-bit float recording and dual ADC processing

The defining feature of the XLR-A4 is its 32-bit float recording combined with dual analogue-to-digital converters. One converter prioritises quieter signals while the second handles louder peaks, and the recorder continuously blends the two. Physically, this means the adaptor captures a much wider dynamic range before distortion occurs. During interviews, documentary work, or live events, operators no longer need to constantly adjust gain levels when subjects suddenly raise their voice or move closer to the microphone. Instead of clipped peaks flattening into harsh digital distortion, the signal retains usable detail that can later be adjusted cleanly in editing.

Direct digital integration through the MI Shoe

Rather than routing analogue audio through cables to the camera body, the XLR-A4 transmits audio digitally via Sony’s Multi Interface Shoe. Sliding the adaptor directly onto the camera provides both the audio connection and power supply, eliminating the need for separate batteries or trailing leads. This design keeps rigs physically cleaner and reduces strain around ports when working handheld or on stabilisers. Because the signal remains digital from the adaptor to the camera, synchronisation remains precise, and background interference is reduced compared with external analogue connections.

Four-channel recording flexibility

The adaptor supports up to four simultaneous audio channels, giving crews far more flexibility when building compact production rigs. Two full-size XLR/TRS inputs support professional microphones with optional 48V phantom power, while the third stereo mini-jack input accepts smaller microphones or wireless receivers. This layout makes it possible to run dual-interview microphones while capturing a separate ambient track, or to combine boom and wireless systems without adding an external recorder. Dedicated physical controls on the adaptor also keep channel assignment and monitoring close to hand while shooting.

Rig-ready construction and USB audio support

Sony has designed the XLR-A4 around modern compact cinema rigs rather than traditional large broadcast setups. The lower-profile body keeps the centre of gravity closer to the camera, which becomes more noticeable when balancing gimbals or building lightweight shoulder rigs. The supplied 60cm extension cable allows the adaptor to be repositioned onto cages or support arms when extra clearance is needed around monitors or handles. The XLR-A4 also functions as a USB audio interface, allowing microphones connected to the XLR inputs to record directly to a computer for podcasting, voiceover work, or studio production.

What’s in the box?

• 1 x Sony XLR-A4 XLR Adaptor
• 1 x Mini-stand
• 1 x Case
• 2 x Connector Protect Cap
• 1 x Shoe Audio Extension Cable
• 1 x Shoe Audio Extension Cable Reinforcement Attachment