Does Burmester play well with others?

[garylkoh]

Gary,
What is your preamplifier?

It's still a prototype. Underdevelopment together with Steve McCormack.

[AudioExplorations]

I confirm the following from the 911 data sheet inside the box:

Sensitivity Input: 770mV Unbalanced/Balanced
Impedance Input: 22.9kOhms Unbalanced, 1.88kOhms Balanced

The pre-power coupling 'rule of thumb' is that the ratio preamp output impedance to power amp input impedance must be greater than 10.

So in theory any source/preamp with an output impedance equal to or less than 2290 Ohms can be run single ended and 188 Ohms can be run balanced into a 911 without issues.

Preamps with robust output stages are typically around 50 Ohms. My tubed wavelength cosecant dac is 500 ohm, so I run it single ended. My Weiss media has an output impedance of 0.2 ohms so will drive it balanced with ease.

[MarinJim]

It's still a prototype. Underdevelopment together with Steve McCormack.

Now this sounds exciting!

[MarinJim]

I confirm the following from the 911 data sheet inside the box:

Sensitivity Input: 770mV Unbalanced/Balanced
Impedance Input: 22.9kOhms Unbalanced, 1.88kOhms Balanced

The pre-power coupling 'rule of thumb' is that the ratio preamp output impedance to power amp input impedance must be greater than 10.

So in theory any source/preamp with an output impedance equal to or less than 2290 Ohms can be run single ended and 188 Ohms can be run balanced into a 911 without issues.

Preamps with robust output stages are typically around 50 Ohms. My tubed wavelength cosecant dac is 500 ohm, so I run it single ended. My Weiss media has an output impedance of 0.2 ohms so will drive it balanced with ease.

Thanks again for info.