Grace Design m303

$299.00
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Grace Design m303 Active DI Box - Next-Level Audio Precision

The Grace Design m303 Active DI Box redefines performance for stage and studio applications with its advanced, galvanically isolated design. Featuring a cutting-edge power supply for exceptional headroom and dynamic range, paired with a custom-wound Lundahl transformer, the m303 delivers stunning low-end clarity and high-frequency detail. Encased in a sleek yet rugged 1/4” extruded aluminum chassis, this DI box combines elegance with durability, making it a reliable choice for professionals seeking top-tier audio quality.

Unmatched Clarity On Stage

For front-of-house (FOH) engineers, the m303’s transparency and musicality ensure every live source—keyboards, passive basses, or acoustic guitars—sounds pristine, enhancing large productions with consistent, high-fidelity audio. Grace Design’s renowned reliability means fewer failures and more uptime, keeping venues and stage crews confident in their gear.

Studio-Ready Detail and Flexibility

In the studio, the m303 elevates direct instrument recordings with vibrant detail and robust bass response. Musicians, engineers, and producers will appreciate its ability to capture tracks that shine through downstream processing like saturation, compression, and EQ, resulting in richer recordings and polished final mixes.

Premium Lundahl Transformer

At the heart of the m303 lies a world-class Lundahl transformer, chosen for its ultra-low noise, minimal distortion, and exceptional low-end performance. As a leading name in pro audio transformers, Lundahl meets Grace Design’s exacting standards, ensuring the m303 delivers the signature clarity and depth that professionals demand.

Key Features of the Grace Design m303

  • Signature Grace Design transparent, musical audio performance
  • Active design with true galvanic isolation for clean signal integrity
  • Custom-wound Lundahl transformer for deep bass and high-frequency detail
  • Ultra-low distortion and noise with wide dynamic range
  • 1M ohm input impedance, ideal for instruments with passive pickups
  • Rugged 1/4” extruded aluminum chassis built for durability
  • Backed by a 5-year warranty, made in the USA

Technical Specifications

  • Design: Active DI Box with Galvanic Isolation
  • Transformer: Custom-Wound Lundahl
  • Input Impedance: 1M Ohm
  • Chassis: 1/4” Extruded Aluminum
  • Warranty: 5 Years
  • Manufacture: Made in the USA
Our ONE WITH EVERYTHING ZEN WARRANTY extends the standard manufacturer warranty by one year, see our ZEN WARRANTY page for details.