Warm Audio WA-DI-P Passive Direct Box CineMag Transformer

The Warm Audio WA-DI-P is a passive direct box built around a custom CineMag USA transformer — the same family of American-made transformers found in high-end studio preamps and recording equipment. Its job is straightforward but critical: convert unbalanced, high-impedance instrument signals into balanced, mic-level signals that can travel long cable runs to a mixing console or audio interface without picking up noise or losing fidelity. With a frequency response of 20Hz to 70kHz (±0.5dB), the CineMag transformer captures the full harmonic spectrum of the source instrument with exceptional accuracy, preserving subtle overtones and transient detail that lesser transformers can roll off or color.

The passive topology means the WA-DI-P has no active electronics, no batteries to replace, and no phantom power requirement — it simply works whenever a signal is present. The aluminum enclosure keeps the unit lightweight while providing solid protection and effective electromagnetic shielding for noisy stage environments. Whether you are running a bass guitar direct to front-of-house, capturing an acoustic guitar in the studio, or sending a keyboard signal to a recording interface, the WA-DI-P provides a clean, transparent conversion path that lets the character of your instrument come through unchanged.