Active Magnetic Soundhole Pickup, Gold Chrome For Steel String Acoustic Guitars, 6 and 12 Strings Will Not Work on Nylon String Guitars Built-in Active Preamp w/Volume Control Prewired Endpin Jack, Batteries Included EMG celebrates Bajo players worldwide by offering the classic ACS in 4 new finishes. The “Bajo Cromo” (Chrome), “Bajo Oro” (Gold Chrome), “Bajo Rojo Cromo” (Red Chrome) and the “Bajo Bandera”. The Bajo offers authentic acoustic tone with a broader frequency range than a piezo pickup. The custom voiced internal preamp is designed for an acoustic's natural phase and frequency response making it perfect for any steel string acoustic guitar. This noiseless system gives you all the top-end brilliance and all the full bodied acoustic tone you'll ever want or need. From Mariachi to Metal, Bluegrass and back, the EMG Bajo will deliver.