The input sensitivity of your Class’e amps are 1 volt. That is on the low side. Like I originally suggested all you need to do is add an attenuator. It is no big deal to do that. I use the Schiit SYS to solve the problem that I had with my high gain preamp!
Here are the specs for the Class’e!
Power output: 200 watts into 8Ω (mono)
Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.004%
Gain: 29.02 dB
Input sensitivity: 1V
Signal to noise ratio: 135dB
Speaker load impedance: 4Ω (minimum)
Dimensions: 11.5 x 16 x 9.5 inches