Grace Design
Grace Design m303 High Performance Active DI
Best transparent signal conversion for discerning audio professionals.
This active direct box provides superior DI performance for both stage and studio. It features an advanced power supply for exceptional headroom and dynamic range, along with a custom-wound Lundahl transformer for enhanced low-end definition and pristine detail. The unit includes a 13dB pad switch for hot signals, an Iso/Gnd switch for noise reduction, and a peak indicator LED. Its durable aluminum chassis and gold contact toggle switches ensure road-ready reliability and state-of-the-art audio quality.
$299.00
Owner Satisfaction
4.8
/ 5
Category Rank
1
/ 183
Best Direct Boxes
Price vs Category Average
-1%
Below average
Type
Active
/ Active
Who it's for
- Audio engineers and musicians prioritizing uncompromised sound reproduction
- Touring professionals and sound technicians needing dependable, long-lasting gear
- Studio professionals and live sound engineers working with varied instruments
Who should skip it
- Budget-conscious musicians and hobbyists seeking more affordable DI solutions
- Musicians needing a simple, passive plug-and-play solution without external power
- Performers and producers seeking multi-functional preamps with tone-shaping capabilities
Performance breakdown
Signal Fidelity
Lundahl transformer integration delivers unmatched clarity and harmonic richness.
Dynamic Headroom
Advanced power circuitry handles aggressive transients without a hint of clipping.
Build Durability
Extruded aluminum chassis ensures survival in the most demanding touring environments.
Noise Rejection
Full galvanic isolation effectively eliminates ground loops and unwanted electrical hum.
Input Versatility
The 13dB pad provides necessary flexibility for high-output active instruments.
Component Quality
Gold contact switches offer premium tactile feedback and long-term signal reliability.
Key Specs
Type
Active
Channels
1
Pads
-13dB
Ground Lift
Yes
Inputs
1 x 1/4" (in)
Outputs
1 x XLR, 1 x 1/4" (thru)
Power Source
48V Phantom Power
Height
1.73 inches
Know before you buy
No, the m303 is powered entirely by 48V phantom power from your mixing console or audio interface. No batteries or external power adapters are needed.
The custom-wound Lundahl transformer provides galvanic isolation and helps maintain exceptional low-end definition. It ensures your signal remains pristine and free from ground loop noise.
Yes. The unit features a -13dB pad switch specifically designed to attenuate hot signals, preventing clipping and ensuring clean headroom for high-output instruments.
The m303 includes an Iso/Gnd switch that allows you to lift the ground connection. This is an effective way to eliminate ground loops and the associated noise when connecting to different pieces of gear.
The peak indicator LED provides a visual warning if your input signal is too hot. It helps you quickly identify and manage gain staging issues before they reach your recording interface or PA system.
Yes, it is built with a rugged extruded aluminum chassis and high-quality gold contact toggle switches. It is designed to withstand the rigors of frequent transport and stage use.
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