The bare essentials with the Stagebug series
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A brief reminder and clear overview
The StageBug SB-1 is a compact active direct box designed to fit inside a guitar case for artists who prefer to travel light.
- Active direct box for acoustic guitar
- Ultra compact to fit in your guitar case
- Plug & play easy to use feature set
- 48V phantom powered, no batteries needed!
The design begins with standard ¼ instrument input with a thru-put to feed your tuner or your on-stage amp. The ultra-quiet active circuit at once converts the signal from high to low impedance to reduce susceptibility to noise. The signal is then buffered and balanced for long cable runs to the PA system. 48 volt phantom provides the power, so the SB-1 does not require batteries or external supply to make it work. You simply plug in and you are ready to go!
StageBug SB-1 Applications
Acoustic guitar live
The StageBug SB-1 is plug & play easy to use. Connect and it automatically converts your Hi-z instrument signal to lo-Z and balances it for long runs.
Recording bass direct
Record your bass direct using the StageBug SB-1. This improves the tone and reduces noise by properly matching the impedance of the instrument.
Adding an amp or tuner
Use the SB1 thru output to feed your on-stage amplifier. For fun, add pedals after the SB-1 to color your tone on-stage while leaving the PA signal clean.
The StageBug SB-2 is a compact passive direct box that is perfect for active basses and keyboards, is small enough to fit inside an instrument case, and features a stereo to mono mix function to save mixer channels.
- Passive DI for bass, acoustic and keyboard
- Ultra compact to fit in your guitar case
- Plug & play easy to use feature set
- Transformer isolation eliminates noise
Small size and big performance
The compact design begins with a ¼" input and thru-put to feed the on-stage amp. This connects to the custom made Eclipse ET-DB3 transformer which performs the impedance matching and balances the signal. When using extra high output instruments, a -15dB pad can be inserted into the signal path. This enables the SB-2 to be used with active basses and digital pianos that often tend to overload the input side of the interface. An innovative stereo-to-mono merge function provides a convenient way to connect stereo keyboards and computers without having to reset the source for mono operation, saving time and input channels on the PA. The SB-2 output features an XLR wired to the AES standard with pin-2 hot. Once connected, the SB-2 delivers a smooth warm sound reminiscent of older vintage gear. The Eclipse ET-DB3 transformer is magical in its ability to handle extreme signal levels with a natural compression that is pleasing to the ears. The transformer also helps eliminate hum and buzz caused by ground loops by isolating the input from the output. This is augmented with a ground lift switch that lifts pin-1 on the XLR for quiet, professional results.
StageBug SB-2 Applications
Using the SB-2 with Acoustic guitar
Plug your acoustic guitar into the SB-2 Passive and it will smooth out the peaks and warm up your tone with a vintage vibe. The compact design makes it perfect for traveling between gigs.
Using the SB-2 with electric bass
Connect your bass to the StageBug SB-2; send the thru signal to your amp and the output to the PA system. Transformer isolation eliminates nasty hum and buzz caused by ground loops.
Using the SB-2 with a keyboard
The Passive SB-2 is a perfect go-to direct box when you need to take the output from a keyboard and send it to the PA system. Input and thru jacks automatically merge the stereo signal to mono to save channels while the SB-2 balances the signal to drive distances of 100 meters (300 feet) without noise!
The Radial StageBug SB-4 is a compact active direct box that has been optimized for use with piezo transducers and is small enough to fit inside an instrument case.
- Active DI optimized for piezo transducers
- Smooths out peaks & eliminates squawk
- Powered by 48V phantom, no batteries required
- Compact design fits in your instrument case
The perfect companion for piezo instruments
The StageBug SB-4 allows you to retain the natural tone of your piezo-equipped instrument when amplified through a PA system. Unlike typical direct boxes, the SB-4 features a very high 5 meg ohm impedance that smooths out troublesome peaks that give piezo transducers a bad name. This higher impedance also broadens the frequency response for a more natural and pleasing sound. The active circuit balances the audio signal to enable long runs up to 100 meters without loss, while delivering spectacular linearity and low distortion throughout the audio range. Output connections include an aux out for a stage amplifier plus a standard XLR output to feed the PA.
Control feedback on stage
To help eliminate feedback on a live stage, the SB-4 is equipped with a high-pass filter and 180° polarity reverse switch. The high pass filter eliminates excessive bottom end which in turn reduces resonance that can cause the instrument to vibrate. The 180° polarity reverse helps reduce acoustic hot spots on stage by changing the phase relationship between the PA system and room acoustics which can combine at certain frequencies to create peaks.
StageBug SB-4 Applications
Using the SB-4 on classical guitar
Connect your piezo pickup directly to the StageBug SB-4 to get the best tone. No preamp is required! Activate the low-pass filter to eliminate resonance and you are set to go. The SB-4 balances the signal for long runs and smoothes out the peaks for a more natural sounding concert guitar!
Using the SB-4 on dobro
Use the SB-4 with a piezo on your resonator guitar to capture the unique sound of the body. Connect the AUX out to a stage amp if you like and then send the signal to the PA. The SB-4 will help eliminate the mid range squawk and frequency peaks that often force the sound engineer to turn you down in the mix.
Using the SB-4 on upright
Traveling with an upright is expensive! So reducing the size of the ancillary equipment is important. The super compact SB-4 connects from the piezo pickup to the PA and you do not need a preamp in between. The SB-4 delivers a deeper bass and more natural top end, greatly improving your tone through the PA.
The Radial StageBug SB-5 is a compact & portable stereo direct box designed to accommodate laptop computers, tablets, and other consumer audio products when amplifying the signal through a PA system.
- Stereo direct box for laptops, smartphones, and tablets
- Cable with 3.5mm stereo plug to connect to mobile devices
- Transformer isolation eliminates hum and buzz
- Plug & play easy to use, no power required
- Compact design fits in your laptop bag
The easy way to connect to the PA
The StageBug SB-5 provides an easy to use professional interface for connecting any mobile playback device to a mixer or PA system, with a built-in cable and 3.5mm stereo plug to connect directly to your laptop, smartphone, or tablet. Inside, a pair of custom wound transformers isolate the signals to prevent hum and buzz, and balance the audio to feed long cable runs without noise. Left and right 1/4" TRS outputs are provided for stereo operation, or a mono XLR output can be used to save channels on the PA system. The SB-5 works without any power required, and features additional ground lift and pad switches to eliminate ground loop noise and prevent distortion from high output audio sources.
StageBug SB-5 Applications
Using the SB-5 with a computer
Connect the headphone output from your computer directly into the StageBug SB-5 for quiet performance each time. The sidewinder cable cleat makes storage easy and you never lose the cable!
Using the SB-5 with a tablet
The SB-5 is your perfect direct box when extra portability is needed. Connect your iPad or Galaxy tablet to the SB-5 via the integral 3.5mm cable connection and sum to mono via the XLR output.
Using the SB-5 with an iPhone
Need to play backing tracks in stereo? The Stage Bug SB-5 makes it easy to connect from your portable music player. Connect from the headphone out to the SB-5 and send a balanced stereo signal to the PA.
The StageBug SB-6 is a two-channel passive audio isolator designed to accommodate both balanced and unbalanced signals and effectively eliminate noise when used with instruments, consumer electronics, or professional line-level devices.
- Isolator for balanced and unbalanced signals
- Eliminates hum and buzz caused by ground loops
- Exceptionally linear from 20Hz to 20kHz
- Automatically configures for hi-Z or lo-Z signal chains
Problem solver for stereo systems
The SB-6 helps remove noise from two channel audio systems, stereo guitar racks, and pedalboards. Two on-board isolation transformers provide a flat frequency response from 20Hz to 20kHz, while removing hum and buzz from ground loops. Dual ground lift switches help further reduce noise, and a -15dB pad allows you to handle high volume outputs without distortion. When using the SB-6 before a set of powered speakers or guitar amplifiers, a polarity reverse switch corrects frequency cancellation and ensures both speakers play back in phase with one another. The SB-6 is completely passive with no need for power, so it's easy to insert into any system to remove noise quickly.
StageBug SB-6 Applications
Using the SB-6 in a stereo setup
Isolate the output from a DJ Mixer to a power amp using the SB-6 to eliminate hum and buzz caused by ground loops. Either ¼" mono or TRS connectors may be used.
Using the SB-6 in a pro setup
When running multiple speakers, you can often encounter noise due to imperfect power systems and DC offsets. Use the SB-6 to isolate distant loudspeakers to solve the problem.
Using the SB-6 in a guitar rig
Eliminate noise in your guitar setup by isolating the guitar amp from other electronic devices. This SB-6 works great between your pedalboard or with your wireless system.
- Provide phantom power for condenser mic’s
- 48V or 12V power for specialty microphones
- Dual XLR inputs and outputs
- Powered via external 15V power supply
The SB-48 is a phantom power supply that can provide stable 48V power to two condenser microphones or active DI boxes at once, with balanced outputs to feed the inputs of a console or a recording interface.
Power where you need it
The SB-48 utilizes a non-radiating charge pump circuit to create a stable, ripple-free 48 volt supply for active direct boxes and condenser microphones. It is powered by a single 15VDC 400 mA supply (included), with XLR inputs and outputs for each channel. Simply connect your microphones or direct boxes to the XLR inputs, and feed the outputs to a set of preamps or a PA system. This allows you to use your favorite powered microphone or active DI on stage, even when the venue doesn’t have a reliable phantom power source.