Check the listing for details. Positive Grid Spark NEO Wireless Smart Guitar Headphones. Condition: New. Listed at 199.00 USD. Enjoy Your Favorite Spark Sounds Anywhere Positive Grid’s Spark NEO brings the brand’s beloved Spark amplifier technology to the realm of wireless headphones, providing both guitarists and bassists with inspiring Spark sounds in the most convenient and portable form factor yet. This pair of premium wireless headphones is engineered end-to-end to deliver optimized, noise-isolated tones for electric guitars, acoustic-electric guitars, and basses, boasting 40mm drivers and advanced bio-fiber diaphragms that supply a broad, rich, and detailed range of sound. Save four presets directly to your Spark NEO using the Spark app, which provides you with a massive range of 33 amplifiers and 43 effects to explore, along with countless user-generated presets available via ToneCloud.