The Boss Nextone Stage is a 40W combo Guitar amplifier with Tube Logic circuitry and an array of modern features. The Nextone Stage simulates the sound character of the most popular European and American power amp tubes, while the clean and lead channels include 2x separate sound levels alongside 3-band tone control and integrated reverb and delay effects. The Nextone Stage also features a USB port for connecting to the Nextone Editor software, a serial effects path and a headphone jack. Each channel's optional custom mode allows you to precisely tune and then save the sound using this software editor, which accesses the amp via the USB port.

The classic 3-band tone control, which is available to both channels of the Nextone Stage, also allows precise sound adjustment. In addition, the compact Guitar combo with Reverb and Delay, whose tap tempo switch makes it easy to select the delay time whilst offering the most important effects. There's also a serial effects path to loop additional effects into the signal path.

The 4-stage rotary switch selects between the authentically reproduced characters of the most legendary power amp tubes, from the soft break-up of the 6V6 to the overtone-rich sound of the EL84 and the juicy mid-range of the 6L6 to the British bite of the EL34. In addition, the power of the amplifier can be reduced to 20W and 0.5W, causing it to more easily break into distortion.