Grace Design M303 Active DI

The all-new Grace Design m303 is an active, truly-isolated direct box, delivering next-generation audio performance for all live stage and studio applications. With an advanced power supply design, it provides incredible headroom and dynamic range. A custom-wound Lundahl transformer ensures amazing low-end clarity and high-frequency detail. All of this is packaged in a beautiful, rugged ¼” extruded aluminum chassis. Don’t let the elegant exterior fool you—this DI is built to last.

• Phantom powered active DI with full galvanic isolation.
• Custom-wound Lundahl transformer, magnetically shielded with a high nickel core.
• Ultra-low distortion (below -100dB at 1kHz, below -80dB at 50Hz).
• Ultra-low noise (-118dBu, A-weighting).
• Ultra-wide bandwidth 20Hz-80kHz.
• Wide dynamic range (124dB).
• Excellent low-frequency headroom with THD+N @50Hz <-80dB (0.007%).
• 1M Ohm input impedance works with any line or pickup signal source.
• Peak indicator LED - 3dB before clipping.
• Power indicator LED.
• Efficient design only draws 4mA of phantom power current.
• Through signal connector.
• Fully ESD and RFI protected.
• Input pad (13dB) for high-level signals.
• High-quality gold contact toggle switches.
• Very rugged ¼" wall extruded aluminum chassis with recessed connectors.

• Signature Grace Design transparent, musical audio performance.
• Active design with true galvanic isolation.
• World-class Lundahl transformer.
• Incredibly low distortion and noise with a wide dynamic range.
• Deep, rock-solid bass response.
• 1M Ohm input impedance.
• Durable and designed for years of reliability.
• Backed by a 5-year warranty.
• Made in the USA.