Playing an Electric Guitar Live on Stage: The Impact of Amplifiers

When performing live, the choice between playing with or without an amplifier can significantly influence the sound, the visual aesthetics, and the technical aspects of a performance. There is no one-size-fits-all answer, as it depends on the context, the venue, and the performance requirements. This article delves into the complex world of amplifiers in live performances and explores the differences between using and not using an amp when playing an electric guitar on stage.

Understanding Sound Reinforcement

Sound reinforcement in a live performance breaks the venue into two distinct areas: the front of house (FOH) and the back of house (BOH). FOH is where the audience experiences the mix that is being offered to them. BOH, on the other hand, is where the band members hear the mix that they use for their performance and monitoring. This separation is critical for ensuring that both the audience and the musicians are receiving the best possible sound.

Front of House and Back of House

In larger venues, it is typical to have a full sound reinforcement system, which includes microphones, mixers, and amplifiers, to ensure a high-quality sound for the audience. The mix that the audience hears is controlled by the front of house engineers, who work to balance the various elements of the performance to create a cohesive and enjoyable listening experience. The back of house engineers, or stage monitor engineers, focus on the needs of the band members, ensuring they can hear each other and the overall mix in a clear and usable manner.

Amplifiers in Large Venues

In larger venues, the use of amplifiers may be minimized due to logistical and technical reasons. For instance, in contemporary large-scale tours, bass amplifiers and keyboard amplifiers are often omitted if possible. Instead, direct audio signals (direct box) are used, which send the audio directly to the sound board without the need for amplification. This is done for several reasons:

Bass Frequencies: Bass frequencies are largely non-directional and can easily penetrate other microphones, including vocal microphones, drum microphones, and guitar cabinet microphones. Keeping the bass amp off the stage helps in minimizing feedback and other unwanted sound interference. Acoustic Control: Keeping the low frequencies under control helps in managing feedback, minimizing resonant peaks, and standing waves, which can negatively impact the sound quality. Equipment Management: By avoiding on-stage amps, it simplifies the stage setup and reduces the risk of equipment damage or interference from on-stage equipment.

The Case for On-Stage Amplifiers

Even in larger venues, there might be scenarios where on-stage amplifiers are used. The reasons for this can include:

Precision Attraction: The guitar sound the performer is used to is heavily influenced by the guitar amp they play through. Having the amp on stage allows for quick adjustments if something sounds off, providing immediate and subtle changes to the sound. Visual Impact: In many cultural contexts, the visual presence of the amp is an integral part of the performance. The amp can serve as a focal point for the audience, enhancing the overall experience and the perceived quality of the performance. Stage Mix Complexity: In smaller venues, the stage mix is often more straightforward, typically comprising vocals and possibly some key elements. In these settings, the band might choose not to use an amp for the bass player, instead opting for a simpler and more compact stage setup that includes acoustic instruments or direct input lines.

Conclusion

The decision to use or not use an amplifier when playing an electric guitar on stage is a nuanced and multifaceted one. It depends on the specific requirements of the performance, the technical limitations of the venue, and the desired aesthetic and sound quality. Whether the amp is on or off, the end goal is to ensure that both the audience and the musicians have an optimal experience.