Grace Design m303 Fully Isolated Active Direct Box

Description

The Grace Design m303 is an active direct box designed to handle the demands of both live stage and studio environments. It features galvanic isolation through a custom-wound Lundahl transformer, ensuring deep bass response and crisp high-frequency details without signal degradation. With ultralow distortion levels (below -100dB at 1kHz) and an impressively wide dynamic range (124dB), the m303 sets a new standard for direct boxes. Its rugged, extruded aluminum chassis is built to withstand heavy use, making it perfect for professional audio engineers who need reliability on the road or in the studio. The m303 also features a peak indicator LED to warn when the signal approaches clipping, along with reduced power consumption for broad compatibility with phantom-powered devices.

Features

• Phantom powered active DI with full galvanic isolation.

• Custom wound Lundahl transformer, magnetically shielded with a high nickel core
• Ultralow distortion (below -100dB at 1kHz, below -80dB at 50Hz)
• Ultralow noise (-118dBu, A weighting)
• Ultrawide bandwidth 20-80kHz
• Wide dynamic range (124dB)
• Excellent low frequency headroom THD+N @50Hz <-80dB (0.007%)
• 1 mohm 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
• Backed by a 5 year warranty
• Made in the USA