Grace Design m303 - Stereo ACTIVE DI Box equipped with LUNDAHL transformer output

Stereo Active DI Box with LUNDAHL Output Transformers

• Active stereo design with full galvanic isolation
• Dual custom LUNDAHL transformers for clarity and sound depth
• -13 dB pads to handle high-level signals
• Ultra-low noise: down to -118 dBu A-weighting
• Ultra-strong ¼" extruded aluminum construction

Stereo reference solution for stage and studio

The Grace Design m303s is an active stereo DI box designed to deliver the highest level of audio performance with two independent channels, each equipped with a custom LUNDAHL transformer. It is perfect for keyboards, stereo synths and any audio source that requires consistency and sonic breadth.

Transparent and dynamic sound in any situation

With efficient phantom power and Grace Design build quality, the m303s offers extended frequency response from 20Hz to 80kHz, with deep bass and detailed highs. Its open, transparent sound is ideal for professionals who want to keep the character of the source intact.

Premium components for uncompromising audio performance

LUNDAHL's two transformers are the heart of the m303s: shielded, low-noise and with virtually undetectable distortion. ESD and RFI protections, peak LEDs, attenuation pads, and gold contact switches make this device suitable for any professional application.

Technical Specifications.

• Active stereo DI box with galvanic isolation
• Dual magnetically shielded LUNDAHL transformers
• Ultra low distortion: down to -102.8dB (1kHz)
• Noise floor: up to -118.6dBu (A-weighted)
• Dynamic range: 124dB
• Input impedance: 1MΩ
• Peak LED and power LED
• Input pad -13dB for strong signals
• Built-in ESD and RFI protection
• Extruded aluminum chassis with recessed connectors
• Power supply: 48V phantom (4mA per channel)
• Made in USA - 5 year warranty