This preamp sounds incredibly warm, and goes a long ways towards attaining perfect bass tone. The low end is very round, and very punchy mids can be dialed in. This kind of warmth and natural sound is hard to come by, but Alembic has put together a very good package, it’s no wonder Bass Player Magazine have it such high praise.
Don’t mistake the Alembic F-1X with the cheaper amps you have head with tube pre-amp stages. This is the real deal, and provides real tube tone and characteristics and at a hell of a price point.