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    Radial StageBug SB-4 Piezo Compact Active Piezo Pickup DI Direct Box

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    Same Day Music is an authorized dealer of Radial products.

    SKU: RAD SB4PIEZO


    Item Condition: Learn More
    Product Condition

    New Top-Brand Gear From An Authorized US Dealer

    You get top-brand gear, new from the factory, from an authorized US dealer. Our products are shipped from the vendor to our warehouse, and then from the warehouse to you. There is no detour through a retail store, where the boxes are opened, the products put on display, and then sold as leftovers. When you shop online, make sure you are comparing new gear from authorized US dealers. 

    Special Opportunities: When It's Not New, We Tell You

    We occasionally have opportunities to buy B-stock merchandise to offer at special discounts. We also sometimes get returns in less than perfect condition. Sometimes we will offer these products to you - but we always identify it clearly as such using the classifications below. So unless it says otherwise, it's new from the factory.

    Important Guarantee: Your 100% Satisfaction

    Regardless of the condition described on our site, what you should remember is that if you are not 100% satisfied with your purchase you may return it (though exceptions apply for some products). Of course, if you know you will only be happy if a product is 100% cosmetically perfect, then you shouldn't order B-Stock or Blemished merchandise - it's just not a good gamble. And if you will only be happy if a product has never been touched by another human, well then the Resealed products aren't a good choice for you. But if you are looking for even more impressive values than our already-low prices, then these options will be very attractive when available.

    These are our best descriptions of the quality and condition of this merchandise. Because of the highly efficient, automated nature of our warehouse, and the high volume of products we stock and ship, there is no way for us to provide any additional detail on the condition of any individual item. Just remember our 100% satisfaction guarantee!

    Warehouse Resealed

    A warehouse resealed product is usually a customer return. These products are not in absolutely new condition, but will ship with everything the brand new product would ship with including manuals* and the full factory warranty*. These products are still covered by our 30-day satisfaction guarantee, so they're a great deal! 

    Blemished

    This is typically a customer return with minor cosmetic imperfections, such as superficial scratches or scuffs on the finish. This inventory includes all parts, components, manuals (hard copy or downloadable) and the full factory warranty*. It has been tested to manufacturer's specifications and is guaranteed to work perfectly. It may be less attractive than Warehouse Resealed inventory, but it's priced even lower! These products are still covered by our 30-day satisfaction guarantee, so they're a great deal! 

    Scratch and Dent

    This is typically a customer return that shows general wear and tear, along with dents and scratches. This inventory includes all parts, components, manuals (hard copy or downloadable) and the full factory warranty*. It has been tested to manufacturer's specifications and is guaranteed to work perfectly, but will show signs of use. It may be less attractive than Blemished inventory, but it's priced even lower! These products are still covered by our 30-day satisfaction guarantee, so they're a great deal! 

    Factory Resealed

    A factory resealed product is purchased directly from its manufacturer, who may have refurbished the product or used it for training and demonstration purposes. These products are not in absolutely new condition, but will ship with everything the brand new product would ship with including manuals (physical copy or downloadable) and the full factory warranty*. These products are still covered by our 30-day satisfaction guarantee, so they're a great deal! 

    B-Stock

    A B-stock product is purchased directly from its manufacturer, who may have refurbished the product or used it for training and demonstration purposes. These products may be cosmetically blemished, but will ship with everything the brand new product would ship with including manuals (physical copy or downloadable) and the full factory warranty*. These products are still covered by our 30-day satisfaction guarantee, so they're a great deal! 


    *Warranty coverage for non-new gear varies by manufacturer. To see if the non-new product you’re interested in has warranty coverage, click the "What is Blemished/Warehouse Resealed/etc." text link near the price on the product page.

    Item Condition: Learn More
    Product Condition

    New Top-Brand Gear From An Authorized US Dealer

    You get top-brand gear, new from the factory, from an authorized US dealer. Our products are shipped from the vendor to our warehouse, and then from the warehouse to you. There is no detour through a retail store, where the boxes are opened, the products put on display, and then sold as leftovers. When you shop online, make sure you are comparing new gear from authorized US dealers. 

    Special Opportunities: When It's Not New, We Tell You

    We occasionally have opportunities to buy B-stock merchandise to offer at special discounts. We also sometimes get returns in less than perfect condition. Sometimes we will offer these products to you - but we always identify it clearly as such using the classifications below. So unless it says otherwise, it's new from the factory.

    Important Guarantee: Your 100% Satisfaction

    Regardless of the condition described on our site, what you should remember is that if you are not 100% satisfied with your purchase you may return it (though exceptions apply for some products). Of course, if you know you will only be happy if a product is 100% cosmetically perfect, then you shouldn't order B-Stock or Blemished merchandise - it's just not a good gamble. And if you will only be happy if a product has never been touched by another human, well then the Resealed products aren't a good choice for you. But if you are looking for even more impressive values than our already-low prices, then these options will be very attractive when available.

    These are our best descriptions of the quality and condition of this merchandise. Because of the highly efficient, automated nature of our warehouse, and the high volume of products we stock and ship, there is no way for us to provide any additional detail on the condition of any individual item. Just remember our 100% satisfaction guarantee!

    Warehouse Resealed

    A warehouse resealed product is usually a customer return. These products are not in absolutely new condition, but will ship with everything the brand new product would ship with including manuals* and the full factory warranty*. These products are still covered by our 30-day satisfaction guarantee, so they're a great deal! 

    Blemished

    This is typically a customer return with minor cosmetic imperfections, such as superficial scratches or scuffs on the finish. This inventory includes all parts, components, manuals (hard copy or downloadable) and the full factory warranty*. It has been tested to manufacturer's specifications and is guaranteed to work perfectly. It may be less attractive than Warehouse Resealed inventory, but it's priced even lower! These products are still covered by our 30-day satisfaction guarantee, so they're a great deal! 

    Scratch and Dent

    This is typically a customer return that shows general wear and tear, along with dents and scratches. This inventory includes all parts, components, manuals (hard copy or downloadable) and the full factory warranty*. It has been tested to manufacturer's specifications and is guaranteed to work perfectly, but will show signs of use. It may be less attractive than Blemished inventory, but it's priced even lower! These products are still covered by our 30-day satisfaction guarantee, so they're a great deal! 

    Factory Resealed

    A factory resealed product is purchased directly from its manufacturer, who may have refurbished the product or used it for training and demonstration purposes. These products are not in absolutely new condition, but will ship with everything the brand new product would ship with including manuals (physical copy or downloadable) and the full factory warranty*. These products are still covered by our 30-day satisfaction guarantee, so they're a great deal! 

    B-Stock

    A B-stock product is purchased directly from its manufacturer, who may have refurbished the product or used it for training and demonstration purposes. These products may be cosmetically blemished, but will ship with everything the brand new product would ship with including manuals (physical copy or downloadable) and the full factory warranty*. These products are still covered by our 30-day satisfaction guarantee, so they're a great deal! 


    *Warranty coverage for non-new gear varies by manufacturer. To see if the non-new product you’re interested in has warranty coverage, click the "What is Blemished/Warehouse Resealed/etc." text link near the price on the product page.



    Product Description


    The Radial StageBug SB-4 is a compact active direct box that has been optimized for use with piezo transducers. This enables violin, dobro, mandolin, cello, upright bass and other instruments that are best amplified using a piezo to be connected without compromising the tone or frequency response.The design begins with a 1/4" input for the instrument pickup. Unlike typical direct boxes that have a 1meg-ohm input impedance, the SB-4 features a very high 10meg-ohm impedance that smoothes out troublesome peaks that give piezos a bad name. The higher impedance also broadens the frequency response for a more natural and pleasing sound. The active circuit performs the high-to-low impedance conversion and balances the signal to enable long runs upwards to 100 meters without loss, delivering spectacular linearity and low distortion throughout the audio range.To help eliminate feedback on 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 top of 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. Reversing the polarity eliminates the acoustic peak without resorting to severe equalization which only serves to compromise the natural tone of the instrument. Connections include an AUX out for a stage amplifier plus a standard XLR output to feed the PA. Power is derived from the console's 48V phantom, thus eliminating the need for batteries or external supply. One simply connects, turns on the phantom power and plays.These features combined with the compact size make the StageBug SB-4 the perfect companion for orchestral artists, blue grass players and pop string quartets that need to turn it up when in concert.

    Applications

    Using the SB-4 on classical guitarConnect 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 dobroUse 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 uprightTraveling 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.

    Development

    As odd as it may sound, ever since the very first piezo transducers were introduced by Barcus-Berry in the 1960s, there have been concerns with respect to their performance. The primary concern has to do with the tone in that musicians and engineers constantly complain that the frequency response is peaky, dynamic response inconsistent and the instrument lacks natural warmth.Since the introduction of the Radial PZ-Pre, they have come to understand some of the challenges and discovered that the problem is not so much the transducer, but the interface between the transducer and the PA system. Piezo electric elements sound best when they are connected to a very high input impedance, but the higher the impedance, the more noise you get.Think of it this way, as you increase the impedance (or resistance) of a buffer (or amplifier) less signal will pass through. With less signal, you have to increase the magnitude of the amplification to make up for it. As with all amplifiers, the quality differs greatly. Chip based amplifiers that are incredibly efficient tend to not sound very musical. Great sounding amplifiers such as a well designed class-A circuit sound great but are much more susceptible to noise. It is the careful balance between a class-A input buffer and the selective use of operational amplifiers (Op-Amps) that makes Radial products stand out. And this is why some of the world's most renowned artists use the PZ-Pre, PZ-Deluxe and PZ-DI for their piezo instruments.The StageBug SB-4 Piezo is essentially a cut down version that enables the average musician to carry his own personal direct box to a gig and get the quality and performance that has made Radial the leader in instrument to pro-audio interfaces.

    Using The StageBug SB-4

    The following describes how to use the SB-4 Piezo with a standard PA system.Making ConnectionsThe StageBug SB-4 is a direct box designed specifically for piezo equipped instruments. These are commonly used on acoustic guitars, upright bass, violin and classical guitar. The intent with the SB-4 is to bypass any electronics (audio buffers) so that the piezo connects directly to the direct box and the signal is sent directly to a PA system via a microphone input channel.Before making any connections, ensure all audio levels are turned down or equipment is turned off. This will help avoid plug-in transients that could damage more sensitive equipment such as tweeters.The SB-4 Piezo is equipped with two 1/4" jacks and an XLR. The input jack is used to connect the instrument and the thru-put can be used to feed your on-stage amp or tuner. The XLR is used to connect to the PA system and for powering the SB-4's active circuit. Power comes from the mixer in the form of a 48V DC current known as phantom power. This handy invention enables the audio in the form of alternating current (AC) to be sent to the mixer at the same time as the 48V DC is sent from the mixer to the SB-4 using the same 3 conductor cable.Once connected, slowly turn the levels up to a comfortable listening level. It is a good idea to test at low volumes as this helps prevent connection pops that can damage components should something not be quite right.Using the high-pass filterWhen amplifying an instrument through a PA system, low frequency resonant feedback is often encountered. This is usually due to low frequencies from the PA system that cause the instrument to vibrate. The high pass filter is essentially a bass-cut switch that reduces the low frequency output from the instrument. If you hear low frequency resonance, push it inward to activate. Reducing low frequencies also helps by removing excess mud, making it easier for the instrument to sit in the mix.Using the 180* polarity reverseAnother similar source of feedback is resonance caused by the room acoustics and the PA system interaction. What happens is that certain bass frequencies can align with the echo causing what is known as a room mode. Modes can either amplify each other or cancel each other depending on the phase. By reversing the polarity, you can often eliminate resonant feedback. Simply depress to check for the best results in a given room.Reducing ground noiseSome artists like to have a stage amp in addition to the PA and monitors. The StageBug SB-4 Piezo is equipped with a thru output that can be used for a stage amp or a tuner. When it is used with a stage amp, you can sometimes encounter hum and buzz caused by a ground loop. Ground loops occur when the audio ground and the electrical ground conflict. A side access ground lift switch will help eliminate the noise. Simply depress when needed.

    Features:

    - Active DI optimized for piezo transducers
    - Smoothes out peaks, eliminates squawk
    - High pass filter eliminates resonance
    - Ultra compact to fit in your guitar case

    Specifications


    - Audio circuit type: Piezo optimized active buffer
    - Frequency response: 20Hz to 20kHz
    - Total harmonic distortion: <0.006%
    - Dynamic range: 100dB
    - Input impedance: 5Meg Ohms
    - Maximum input: +4dBu
    - Gain: +2dB
    - Output impedance: 330R Ohms
    - Equivalent input noise: -101dBu
    - Noise floor: -97dBu
    - Intermodulation distortion: <0.01%
    - Phase deviation: 10* @ 50Hz
    - Switches: High Pass Filter, Phase, Ground Lift
    - Low-cut filter: 50 Hz
    - Filter slope: 6dB/octave
    - Instrument input: 1/4" buffered with piezo optimized load
    - Auxilary output: 1/4" buffered to drive guitar effects, amplifier or tuner
    - Balanced output: Pin-1 ground, pin-2 (+), pin-3 (-)
    - Polarity reverse: 180*
    - Ground lift: Soft lift with 100 Ohms to ground
    - Construction: 16 gauge steel chassis & outer shell
    - Finish: Baked enamel
    - 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) 8.25" x 5" x 1.75" (210mm x 127mm x 44mm)
    - Shipping weight: 0.8 lbs (365 grams)
    - Power: 48V phantom power
    - Conditions: For use in dry locations only between 5*C and 40*C
    - Warranty: Radial 3-year, transferable

    WARNING: Cancer and Reproductive Harm - www.p65Warnings.ca.gov.