Timo is correct. It doesn't really matter where you put it and it will always be your weakest link.
IMHO, always use the cleanest, best imaging, sound stage, and full freq response on your source ( Pretty much the best cable you can get ) and swap around the preamp to amp cable for your listening preference.
Remember, if it sounds bad from the source then it will just get amplify to a greater degree from preamp to amp.
IMHO, always use the cleanest, best imaging, sound stage, and full freq response on your source ( Pretty much the best cable you can get ) and swap around the preamp to amp cable for your listening preference.
Remember, if it sounds bad from the source then it will just get amplify to a greater degree from preamp to amp.