In 2021, the AAD400CE was introduced as part of Ibanez's Platinum Collection of the Advanced Acoustic series as an acoustic/electric guitar. This brand-new body shape is called the Grand Dreadnought. Proportionally, the Grand Dreadnought's body is 5% larger than a standard dreadnought, allowing for more volume, richer tone, and more powerful low-end response. The unique reimagined Advanced Access cutaway offers some of the best and most uninhibited upper fret access on any Ibanez Acoustic. Blending the Contact pickup with the Magnetic pickup provides a more natural acoustic tone. This pickup combination enhances the depth of the sound and tonal brightness. The guitar also features on-board treble and bass controls for contouring the tone of Magnetic pickup, making it suitable for a variety of applications for modern players.