Vitus versus Gryphon

nasaman OP

I searched a bit harder and found a PDF from Audio Esoterica which states, "the output stages of the RI-101 are two bridged amps per channel." (Good reason to keep that quiet, and why there are no low impedance loading figures)

Audio Esoterica RI-101
One aspect of the circuit design that has not changed is the topology of the output stage, which is bridged (aka ‘balanced’), which in this implementation means that Vitus is using two separate amplifiers per channel, with each amplifier powering one leg of a differential signal. This circuit topology means twice as much voltage swing and twice as much power (theoretically four times the power), plus lower noise. However, it also means twice the distortion and twice the output impedance (and therefore half the damping factor).

If this is the case then stick with the Gryphon/s as the worst thing that happens when amps are bridged is they loose current ability, damping factor and stability into low impedance’s, and that’s what you have and need with the SF’s as I showed.

Cheers George

Thank you George for going extra miles... I really appreciate.
i however bought a Vitus locally and loving it to death. Saving up to upgrade the line. Might give Gryphon Diablo 300 a try in few years. Great stuff. Totally diff level.

Nasaman

what model of vitus did you get?

I bought the integrated Ri-100.
It’s so impressive... I’m saving up for a bigger one 

nasaman OP
I bought the integrated Ri-100.
It’s so impressive... I’m saving up for a bigger one

Hmm! you will go round in circles.
Try the Gryphon Diablo 300 before doing that, as that will also drive your SF’s nasty bass load impedance better than either Vitus, as it’s also the same mono’d stereo configuration as the 100.

Realize that you do don’t need any more wattage as the SF’s are 91db!!!!! effecient, you need current, low damping factor and low impedance stability.

mono’d stereo configuration (gives more wattage)

This is what the SF’s don’t need

However, it also means twice the distortion and twice the output impedance (and therefore half the damping factor, half the current less low impedance stability).

Cheers George