Vitus versus Gryphon

nasaman OP
Vitus versus Gryphon

Your SF’s have an evil load right through the bass

Stereophile: The speaker is still a demanding load for the partnering amplifier, with an impedance magnitude that drops to 2.5 ohms throughout the upper bass (fig.1). There is also a punishing combination of 4 ohms magnitude and –50 ° electrical phase angle at 70Hz that will suck gobs of current from the amplifier.

https://www.stereophile.com/images/archivesart/1207SFEfig01.jpgT

I don’t know about the Vitus as nowhere, does it state what it can do wattage wise on the bench into 8 4 then 2ohms loads, and if it’s Bi-polar output or Mosfet, it’s an unknown especially into these magic speakers of yours if driven right.

With the Gryphon’s you know your getting an amp that will breath easy into 2ohms all day, and that’s because it’s bi-polar output huge power supply and very well designed.
Your speaker at 90db will love the Diablo 120 or even better the Diablo 300. And they sound just like what you said you like you sound to be.
https://gryphon-audio.dk/shop/integrated-amplifiers/gryphon-diablo-300-integrated-amplifier/

Cheers George

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