Just getting into this stuff and I have an opportunity to jump on an Acurus 250 power amp but I have no way of testing it. The owner is pulling it out of storage and has no preamp to try it with. Problem is, I have no preamp either. Is there another way I can test it audibly without a Preamp to see how it works? Can I use a receiver? I don't know much about multimeters, etc. Thanks.