ediots:Can a dedicated volume control be a better alternative to attenuators? It is quite expensive compared to attenuators, but is it a much better solution? I have my eye on something like this http://www.spl.info/index.php?id=127&L
You can use a passive pre-amp as an alternative; in essence, a passive pre-amp is simply a variable (adjustable) attenuator. The trouble with attenuators is that they are of a fixed value - they may attenuate too much or too little. With a passive pre-amp, which is in essence nothing more than a high-grade volume potentiometer (usually an alps or similar), you can adjust the amount of attenuation, thereby perfectly matching the output level of your source component to the input of your preamplifier/amplifier. Passive pre-amps usually also offer you the bonus of an extra switchable input or two as well.
QED used to make/sell them
http://www.superfi.co.uk/index.cfm/page/moreinfo.cfm/Product_ID/885 but the one featured there, about £60, appears discontinued now. I'm sure others may make them too though (I think Creek do/did one too). Do a google - there are a few good articles on this QED one which explains the benefits in detail, but can't be linked here as it'd infringe MR E's posting rules.