The Award-winning Anthem series, featuring LR Baggs' patent-pending TRU•MIC technology, seamlessly combines a proprietary condenser microphone with the acclaimed Element pickup to deliver the warmth and fidelity of a studio-mic’d guitar anywhere you perform.At the heart of the Anthem is a revolutionary microphone engineered to capture a dynamic studio-mic’d sound for any live performance. The TRU•MIC mounts to the underside of the bridge plate and hovers just 3 mm above its surface to take advantage of the PZM or “boundary” effect. This proprietary mounting system, combined with noise cancellation, frees the mic to perform as if it were outside of the guitar in a studio and maintain remarkable feedback suppression for the stage. The result is a balanced frequency response with excellent clarity for the purest sound you have ever heard amplified. They have paired the Element pickup with the TRU•MIC to provide solidity and punch for low frequencies.For those of you who prefer a minimalist approach to controls, the Anthem SL delivers the same groundbreaking studio mic’d fidelity as the Anthem in a streamlined format with a single volume control. The endpin preamp has all-discrete circuitry for the purest signal and the TRU•MIC is premixed with the Element for optimum performance.LR Baggs Anthem SL™ Features:Anthem TRU•MIC carries the majority of the guitars’ frequency range while the Element Pickup carries only the lowest frequenciesThe mic is highly feedback-resistantNoise cancelling microphone technology eliminates any annoying honky or boxy qualities from the inside of the guitarMic installs easily on the bridgeplate with peel and stick adhesiveMic and pickup levels preset for optimum performanceSoundhole remote includes volume and mic trim controlsAll discrete pre-contoured endpin preamp with preset crossoverElement Pickup fits most common string spacings and saddle widthComes with battery bag for secure and unobtrusive battery retentionPatent-pending LR Baggs ANTHEM-SL Anthem SL Internal Tru-mic Acoustic Guitar Microphone/Element Pickup System.