ไดเร็คบ๊อกซ์ Radial StageBug SB5 Laptop Direct Box

ไดเร็คบ๊อกแบบสตอริโอสำหรับคอมพิวเตอร์ Radial StageBug SB5, Passive Stereo direct box for laptop computer, Integral 1.5m cable with sidewinder cleat, Transformer isolation eliminates noise

4,300 ฿


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Radial StageBug SB-5 Laptop Direct Box

ไดเร็คบ๊อกแบบสตอริโอสำหรับคอมพิวเตอร์  Radial StageBug SB5, Passive Stereo direct box for laptop computer, Integral 1.5m cable with sidewinder cleat, Transformer isolation eliminates noise

The StageBug SB-5 Laptop DI from Radial Engineering is a compact stereo direct box designed to accommodate laptop computers, tablets, and other consumer audio products when amplifying the signal through a PA system.

The passive design begins with an integrated input cable that connects from the headphone out via a flexible 5’ (1.5m) cable that is terminated with a standard 1/8″ (3.5mm) stereo connector. The cable is secured via a clamping strain relief and is wrapped using the sidewinder cleat for easy storage.

This eliminates the need to locate a cable, thereby making it easy to deploy in fast-paced work environments. Inside, the signal is sent to a pair of custom-wound transformers where the impedance is lowered and the signal is balanced for long cable runs, upwards to 300’ (100m).

The transformers further benefit by isolating the computer from the PA system to help eliminate hum and buzz caused by ground loops. This is augmented with a ground lift switch to further reduce ground contamination.

A choice of output connectors is available including a stereo set of 1/4″ TRS jacks for full stereo operation or an XLR out that automatically sums the left-right program material to mono.

This can save valuable channels on the PA system and makes setup easy in situations where full stereo reproduction is not required. A -15 dB input pad can be engaged to reduce sensitivity and enable extra high output sources to be connected without distortion.


  • Stereo direct box for laptop computer
  • Integral 5′ (1.5m) cable with sidewinder cleat
  • Transformer isolation eliminates noise
  • Plug & play, easy to use, no power required


Audio circuit type: Passive, transformer based
Number of channels: Two channels, mono or stereo outputs
Frequency response: 20Hz ~ 20KHz (± 1dB)
Dynamic range: 100dB
Maximum input: +20dB
Total harmonic distortion: 0.01% @ 1kHz
Phase deviation: 2° @ 100Hz; 5° @ 50Hz
Input impedance: 40k Ohms, unbalanced
Output impedance: 2.8k Ohms, balanced
Transformer: Custom design
Input pad: -10dB
Auto Merge: Sums left & right sources to mono at XLR
Ground lift: Disconnects pin-1 at 1/4″ TRS outputs
XLR configuration: AES standard (pin-2 hot)
Input connector: 3.5mm (1/8″) integrated 1.5m (5′) cable
Output connectors: 1/4″ TRS stereo / XLR-M mono merge
Construction: 14 gauge steel chassis & outer shell
Finish: Durable powder coat
Size: (L x W x D) 4.5″ x 1,85″ x 1.35″ (114mm x 47mm x 34mm)
Weight: 0.55 lbs (250 grams)
Shipping size: (L x W x D): 8″ x 5″ x 3″ (203mm x 127mm x 76mm)
Shipping weight: 0.8 lbs (365 grams)
Power: Passive, no power required
Conditions: For use in dry locations only between 5°C and 40°C
Warranty: Radial 3-year, transferable
Specifications are subject to change without notice.


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