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Re: Don't confuse input impedance with ...

There just might be another source of confusion here. For example for your Denon DL-301 II the output impedance at 33 ohms is actually pretty close to the figure for the Denon DL103 (40 ohms). Now this "output impedance" is more likely than not the "coil" impedance (perhaps measured at 1kHz), not recommended "load" resistance.

For example I've found that using a load resistance of less than 100 ohm with a DL103 gives wolly/sloppy bass, and in any event many user seem to find the 103 works best at 100ohm loading; things are different with a step-up transformer so let's not even go there.

Thus for the DL-301 II if at 100 ohms the sound is full, has good bass definition, and *isn't* screechy in the high end ... if that's the case ... then I'd suspect loading at less than 100ohm might not be a good idea.

--

Now for the AT33PTG Prestige the specs do provide a recommended "loading" of "20 Ohms or more" (just as you've indicated). But is that enought, is a recommendation for the primary coil impedance of a Setup Transformer, or the loading resistance for an active phono stage?; that difference I'll leave to someone more qualified to explain but I've noticed that the two are rarely the same.

So you see it's a hornet's nest of similar sounding specifications that mean very different things ... the sloppiness and lack of adherence to standard terms sure doesn't help!

For the AT33PTG Prestige again I'd apply the judgement (above) to the sound at 100 ohm loading and only after decide if going less than 100 ohm seemed even worth trying.

Cheers,

No Guru, No Method, No Teacher

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