Amps, like loudspeakers, there are a lot of. I focus on those of which we have measurements, especially if they are independent.
Measurements -> necessary condition but not sufficient to ensure quality sound. Let us say I understand it as a way to minimize the error risk in the purchase.
Unless the seller allows a 30-day trial period, like AVA and others. And live in that same region of the world (my problem: shipping + taxes to Europe).
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