krude
1000+ Head-Fier
If it's 5w into 16Ohm with mid impedance, Susvara is 60Ohm, so if it would have linear power curve it would be around 1.25W for Susvara. For comparison Ferrum Oor (a bit apples and organes as it's solid state) is rated at 8w per channel into 60Ohm, so if those assumptions are correct the Oor is pretty much 6x more powerful, and from my experience it has 2x power needed for Susvara (so knob at 12 o clock rocking out with plenty of headroom to spare, again assuming volume curve is more less linear). I would think that 3W into 60Ohm should be plenty for Susvara, 1.5W driving power + 1.5W headroom ... but ...Also is it really 8 watts of power because their website seemed to imply something different versus the traditional convention of rating power at maximum 1% THD. From their preorder page: "Output powered measured at MID impedance setting at load of 16Ω is 5W with THD ⩽1% (maximum 8W at THD >5%)."
... it is all on the assumption that the amp has a linear curve, it may not, so who knows ... also it would be a fair guess that WOO WA33 is 2x as powerful juding by the tube configuration, but again ... only the manufacturers or really dedicated buyers who can test and measure can answer those questions.
For comparison HA6a on KT88 has just about enough to drive Susvara properly, it could do with a bit of headroom though
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