Pearl tube coolers come standard on both the regular and SE edition of the Power series of amplifiers. Two Pearl coolers are used on the JAN Philips 5687 tubes only, not the six 6922. Your dealer should secure these tube coolers for you from SF, as they are supposed to come with the amp. I suspect that you dealer says they don't matter because he failed to provide them for your when he sold you the amp. Whether they make a difference or not, I personally don't know, but SF must of thought that they were necessary. Just my 2 cents.
