Impedance Loading for SS Hyperion

Hmm. I'm not alone. Any other Hyperion users like to chime in with their loading?

That's the statement in the owner's manual!

Looks like we are gravitating towards higher loading values. Anyone else have one - and what do you use?

Yes 47kΩ on an MC input. You're right that MM inputs are almost always 47k, and are often fixed at that.

Is that with a Hyperion, Bill? Using an SUT, as I expect you know, the resulting loading will be 47,000 ÷ turns ratio² = load (assuming you have a 47k MM input).

I checked this morning and all four cartridges are humming, the Hyperion least of all. But I've gone from 40W amps to an 85W amp. Turn the volume down on the pre-amp dummy! Problem solved.

I used the Sussurro MkII ES with a VAS transformer (1:10) and enjoyed it greatly, and found no downside when I resurrected the NuVista Vinyl to using it with an input set to MC. So when I got the Hyperion I plugged it straight into the NuVista.

Prior to using SUT I had the Sussurro connected to an MC input of a Quad 24p, and that was not impressive (loading was fixed at 10Ω).

One strange thing to report, though, is that I recently had to swap in an old power amp (YBA-1ɑ) as one of my Quad II/forty amps developed a fault. The Hyperion now has a slight hum that I had not heard with the Quads. Irritating! I'm curious to see if it resolved when the Quad gets repaired.

The manufacturer suggests 470 - 1000 ohms.

Quad 24p, yes, fixed at 10Ω for MC. See here. As to why, you'd have to ask Tim deParavicini, who designed it, and that will prove difficult now.

Not sure, I haven't been able to find a circuit diagram. But I'm using the NuVista Vinyl now, which has solid state amps for MC use.

Six hours of driving tomorrow, but at the end of it I should have my right channel back. I've ended up preferring listening to one tube amp and one speaker rather than the old YBA-1ɑ. And no hum that I can hear!