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Will a Rogue Audio Sphinx v3 perform decently with my Sonus Faber?

hello from london, my first thread!

i am using sonus faber olympica i standmounts (87db, 4ohm) in a smallish room (17x9 in feet), not crazy levels, jazz but also rock.

i have a complex setup (lab12 tube pre, arthur boxem class d power amp, and longdog audio hybrid phono stage for my Hana SL MC). and a REL T5.

I really need fewer boxes, but also some cash, and it is tempting to sell everything and buy a used decent integrated, currently eyeing a rogue sphinx v3 , not do well known here. But i can't audition 

i expect that it can't perform as well as what i have, but could i get reasonably close? maybe not for the phono stage. I guess i should go for the magnum upgrade, or the pharaoh, but that might be later...

proux
elliottbnewcombjr
7,728 posts
 

this review, he loved it playing KEFs that are even less sensitive 85db

https://www.stereophile.com/content/rogue-sphinx-v3-integrated-amplifier

excerpt

"I am proud of the fact that my first review for Stereophile was of a modestly priced integrated amplifier called the Rogue Audio Sphinx. Specified at 100Wpc into 8 ohms, 200Wpc into 4 ohms (footnote 1), it played the KEF LS50s like it was made for them"

"Footnote 1: Although JA’s measurements found that it clipped at 155W into 4 ohms.—Editor"

Small space, not too loud, it might be terrific, but living close to Clipping is not for me. Do your speakers have known dips below 4 ohms?

good news, this review of your speakers found minimum never below 4.2 ohms, based on that I think the Rogue could deliver it's excellently priced promise. 

https://www.stereophile.com/content/sonus-faber-olympica-nova-1-loudspeaker-measurements

excerpt

"The Olympica Nova 1's specified sensitivity is 87dB/2.83V/m. My estimated sensitivity was very close to that figure, at 86.7dB(B)/2.83V/m. Although the Olympica Nova 1's nominal impedance is specified as 4 ohms, the solid trace in fig.1 reveals that the impedance remains above 4 ohms for the entire audioband. The minimum value is 4.2 ohms at 205Hz, and while the electrical phase angle (dashed trace) is high at some frequencies, this will be ameliorated by the high impedance magnitude at those frequencies. The Olympica Nova 1 will be easy to drive."

 

proux OP
14 posts
 

yeah, very good point, and the hifi news review  is confusing- at least to me. "amp-friendly impedance - minimum modulus 4.2 ohm" but  equivalent peak dissipation resistance falls to 2.3 ohm- which they say is "comfortably about the 1.7 ohm often recorded by competing floor standers".

So i think that's OK? I can't find any measurement of peak current, 

chat GPT says

Based on the manufacturer specifications and independent measurements for the Rogue Audio Sphinx V3

, here are the details regarding its power and current capabilities:

  • Continuous Power Output: The amplifier delivers a minimum of 100 WPC into 8 ohms and 200 WPC into 4 ohms.
  • Measured Power: In testing, the V3 delivered approximately 96W into 8 ohms and 150W into 4 ohms.
  • Peak Current/Output: While a specific "peak current" numerical value (in amperes) is not explicitly listed in the technical specifications, the amplifier is designed with a high-storage linear power supply and custom 375 VA toroidal transformer, allowing it to drive difficult loads like Magnepans.
  • Load Stability: The Sphinx V3 uses Hypex Class D modules, which are known for maintaining high current into low-impedance loads, effectively doubling its wattage from 8 to 4 ohms. 

The Sphinx V3 is widely regarded for having strong, detailed, and authoritative bass, which implies high current delivery to the speaker

Post removed 
proux OP
14 posts
 

oops- that stereophile review is the Olympica NOVA- mine are the old ones!

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