The Grace Design m303 Active Direct Box provides incredible headroom and dynamic range. A custom-wound Lundahl transformer outputs amazing low-end clarity and high frequency detail. All of this performance is packaged in a beautiful and rugged ¼” extruded aluminum chassis. Don’t let the elegant exterior fool you, this thing is built.

• 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 20-80kHz
• Wide dynamic range (124dB)
• Excellent low frequency headroom 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 1/4" wall extruded aluminum chassis, 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 wide dynamic range
• Deep, rock-solid bass response
• 1M ohm input impedance
• Durable, designed for years of reliability
• Backed by a 5 year warranty
• Made in the USA

• Grace Design m303 Active Direct Box
• Manufacturer Warranty