GRACE DESIGN / m303

GRACE DESIGN/m303 is an active DI that uses an innovative power supply and a custom-wound Lundahl transformer to deliver the transparent sound that is unique to Grace Design.

■Active Direct Box

■Active DI with next-generation sound quality performance.
GRACE design m303 is an active DI (direct box) developed to achieve next-generation audio performance.

The innovative power supply design achieves unparalleled headroom and dynamic range.

In addition, custom-wound Lundahl transformers contribute to high-grade low-frequency clarity and high-frequency detail reproduction.

The beautiful elegant blue housing uses a 1/4-inch thick aluminum extrusion chassis, and is robust enough to withstand long-term use.

This sound is real.

■As a high-quality live stage DI.
The m303 is the highest quality DI box that FOH engineers can choose.

The infinite transparency and detail reproduction keep large-scale live productions sounding great.

The open and musical sound is ideal for any source on stage, including bass, acoustic guitar, and keyboards.

In addition, the reliability of Grace Design products is well-known and will satisfy venues and stage crews for a long time.

■ As a studio DI for high-quality recording.

The m303 provides the highest quality sound as a DI for studio recording.

The sound is vivid and detailed, and the clarity of the low frequencies is perfectly maintained.

This makes later processing (saturation, compression, EQ, etc.) more effective, resulting in better recording and mixing.

This is the new standard for high-quality DI that musicians and engineers have been looking for.

■ Adopts custom-wound Lundahl transformers.

Lundahl is a world-renowned manufacturer of high-end transformers for professional audio, and was the best choice to meet the high sound standards pursued by the m303.

The custom-wound Lundahl transformers allow you to output amazing low-frequency clarity and beautiful high-frequency detail with overwhelming low-noise performance.

■Advantages of the m303
● Transparent sound quality and musicality unique to Grace Design
● Active design with perfect galvanic isolation
● Uses Lundahl's world-renowned custom transformer
● Extremely low distortion and noise, wide dynamic range
● Deep and stable low-frequency response
● 1MΩ input impedance
● Designed for long-term durability
● Made in the USA

These features give the m303 an advantage over many other DI products, making it the most reliable choice for professional acoustic environments.

■Product specifications
● Active DI powered by phantom power
● Complete galvanic isolation
● Equipped with custom transformer made by Lundahl, high nickel core and magnetic shield
● Achieves ultra-low distortion characteristics of -100dB＠1kHz, -80dB＠50Hz or less
● Ultra-low noise (-118dBu, A weighting)
● Ultra-wide frequency response (20-80kHz) and dynamic range (124dB)
● Excellent low-frequency headroom: THD+N @50Hz <-80dB (0.007%)
● 1MΩ input impedance: Supports line and pickup signals
● Peak indicator: Lights up 3dB before clipping
● Efficient phantom power design: current consumption is only 4mA
● Through-out output
● Input PAD switch (13dB): Supports high-level signals
● Complete ESD (electrostatic discharge) and RFI (radio frequency interference) protection
● High-quality gold-plated toggle switch
● Durable 1/4" extruded aluminum chassis with recessed connectors