Radial Engineering StageBug SB-2 – Ultra-Compact Passive DI Box for Instruments

The Radial Engineering StageBug SB-2 is a pocket-sized passive DI built for guitarists, bassists, keyboard players, and mobile musicians who need clean, reliable signal conversion in the smallest possible footprint. With its Eclipse ET-DB3 transformer, stereo-to-mono merge capability, and noise-reducing design, the SB-2 delivers warm, musical tone and dependable performance for stage and studio use.

Key Features

• Passive DI with ET-DB3 transformer: Warm, natural sound with low distortion and excellent noise rejection.
• Stereo-to-mono merge: Combine stereo sources (keyboards, synths, laptops) into a mono mixer input instantly.
• -15 dB pad: Prevents overload from high-output instruments and active pickups.
• Ground-lift switch: Eliminates hum and buzz from ground loops on noisy stages.
• Ultra-compact housing: Fits in gig bags and pedalboards while offering rugged Radial-grade durability.

Customer Benefits

The SB-2 gives musicians a clean, consistent DI sound without requiring power or large gear. Its ability to merge stereo signals and tame noisy sources makes it perfect for live performers, keyboard players, and touring rigs. Set it, forget it, and enjoy hum-free, mixer-ready audio anywhere.

Quick Specs

• Type: Passive DI
• Transformer: Eclipse ET-DB3
• Inputs: 1/4" Hi-Z instrument input + 1/4" thru
• Output: Balanced XLR male
• Pad: -15 dB
• Switches: Merge (stereo→mono), Ground Lift
• Power: Passive—no batteries or phantom power required
• Construction: Compact metal chassis

What’s in the Box

• Radial Engineering StageBug SB-2
• User documentation

Use Cases / Ideal For

Guitars, basses, keyboards, synthesizers, digital pianos, laptops, DJ setups, and compact touring rigs.

Compatibility

Works with all mixers, audio interfaces, stage boxes, and live PA systems. Suitable for both passive and active instruments.

Pros & Cons

✅ Pros:

• Ultra-portable and rugged
• Warm transformer character
• Stereo-to-mono merge function
• No power needed

⚠️ Cons:

• Passive design may not be ideal for low-output pickups
• No dedicated attenuation beyond the -15 dB pad

The Radial StageBug SB-2 provides pro-grade DI performance in an unbelievably compact form—perfect for musicians who need clean, reliable tone anywhere—available now at Soundium.