Reload II and TAE Core with Amp Cabinet Switchers

UPDATE: The N-audio 8X7 and 4X4 now feature an improved power attenuator switching circuit and support all power attenuator types, including the Two Notes Reload II and BOSS TAE Core.

If you purchased an amp switcher before October 2025, please read the article below:

One of my clients, Ed Tullett - a UK-based songwriter and producer uses the N-audio 8X7 amp switcher and recently added the Two Notes Reload II. However, in this case, an issue came up that is worth sharing. A similar problem was also reported by another client using the BOSS TAE Core. The Reload II and BOSS TAE Core are not compatible with older hardware revisions of the N-audio 8X7 and 4X4 amp cabinet switchers.

What makes the Reload II and TAE Core different from the Fryette or the BOSS TAE?

The answer is in the power amp. The Reload II and the TAE Core use a bridged mono amplifier. This means both sides of the speaker output are active, so neither side should be connected to ground. So if you connect them to an older amp switcher circuit that grounds one side of the speaker output, it can actually short the power amp. There is an error LED on the back of the Reload II that lights up when this happens - a good warning sign that the output is being shorted by grounding one of the active output lines.

I messaged Guillaume Pille, the owner of Two Notes. Big thanks to him for the quick reply and the friendly chat. He confirmed what I was already suspecting, and I was right when I checked Ed’s setup!

Hi Niki,
Reload II is using a stereo class D amp, and as in most Class D amps the output is bridged yes. I would certainly not recommend grounding the output!