Warm Audio WA-DI-A – Active/Passive Instrument Direct Box

The WA-DI-A from Warm Audio is a high-performance direct box designed for instrument and line-level sources, offering both active and passive operation modes. With premium components, flexible pad control, and sturdy build, it’s ideal for studio tracking, live rigs and instrument routing in professional settings at Soundium.

Key Features

• Active operation with custom CineMag USA output transformer: Converts high-impedance instrument signals to low-impedance mic level, preserving tone and clarity.
• Switchable to passive mode: Allows use without phantom power or batteries, giving flexibility for different signal chains.
• Variable pad knob (-3 dB to -30 dB): Lets you attenuate high-level signals for clean integration into mixers or interfaces.
• Amp/Instrument toggle with Thru output: Send your instrument signal simultaneously to an amp and a mixer/recording device for live or studio flexibility.
• Phase-reverse and ground-lift switches: Resolve hum, buzz or phase issues when connecting complex audio systems.
• High input impedance (~1 MΩ) and mic-level balanced output (600 Ω): Suitable for guitars, basses, keyboards or any ¼″ source requiring conversion to XLR for preamps and mixers.

Customer Benefits

With the WA-DI-A, you get a professional-quality DI box that maintains instrument character while offering serious routing flexibility. Whether you’re recording direct bass or guitar in the studio, sending keyboard lines to a mixer, or routing an amp + direct feed for stage performance, the features and build quality ensure smooth, reliable integration—with Soundium standards of performance and durability.

Quick Specs

• Input impedance: approx. 1 MΩ
• Output impedance: 600 Ω, mic-level balanced XLR
• Pad range: Adjustable from -3 dB to -30 dB
• Power options: +48 V phantom power or internal 9 V batteries (active mode) / passive mode available
• Controls: Phase-reverse switch, ground-lift switch, Amp/Instrument switch, Thru ¼″ output

What’s in the Box

• Warm Audio WA-DI-A direct box
• User manual and documentation

Use Cases / Ideal For

Perfect for electric guitars, basses, keyboards, drum machines or other unbalanced high-impedance sources where you need clean DI conversion. Ideal for studio tracking, live stage DI feeds, amp-snake setups or integrating instruments into PA/mixer systems.

Compatibility

Connect your instrument or amp output (¼″) to the input, and balanced XLR output to a mic preamp or mixer. Use Thru ¼″ to feed your amp or monitor simultaneously. Active mode uses phantom or batteries; passive mode works without power. Works with standard studio signal chains and live audio rigs.

Pros & Cons

✅ Pros:

• Premium transformer and components deliver solid tone and signal integrity
• Active/passive flexibility accommodates many setups
• High pad range and routing options increase usability in studio and live scenarios

⚠️ Cons:

• Single channel – you need two units for stereo DI applications
• Active mode requires phantom power or batteries, which adds setup considerations

The Warm Audio WA-DI-A provides the reliability, tone preservation and flexibility needed for serious instrument routing and direct conversion. It’s a smart choice for any professional or project environment at Soundium.