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How will you objectively evaluate a CD player?
I may be stirring a hornet's nest in saying that I try to always look at the specs while doing comparison.
This is true bcse a heavier cabinet will be more sturdy and robust.Plus, of course the my good old bad habit of weighing it manually adding to the already perplexed and distressed look of the seller/retailer.
Most important IMHO are a high current and low impedance output stage. When the CDP runs out of current while playing very complex music (Symphonic Music, Big Band Jazz, Heavy Metal etc.) it will muddle the sound.
Is this valid even for the CDP? I believe the CDP only gives out very low current signal.
Absolutely! Some good CDPs do not only have two transformers (for analog and digital section) but also as powerful as some transformers used in integrated amps. The current reserves are definetly important. And a low impedance output stage gives you another important advantage: it can drive practically any cable and cable length.
Can you please indicate the typical values for output impedance and other figures. I could not find these in the product specs (I used Marantz CD5001 as reference).
Well, most CDPs have an output impedance of a around 100 Ohm. For a low output impedance around 50 Ohms would be a very good value, especially when it's a valve output stage. The lowest I have come across was 34 (I think) for a Audionet CDP.
Jitter specs is very important. More importantly try and avoid asynchronous upsampling. Most cd players today do that and thus the dissatisfaction. Stick to non oversampling cd players or synchronous upsampling players.