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The Pass B1 Buffer Preamp complete in Hammond Aluminum case. The B1 is a very transparent and PS tolerant preamp/ driver. Because it is a source follower some signal is lost (about 15%). But it is an excellent attenuator and offers a high impedance input and low output and is dead quiet. This build shares the same components as the DIY JFET BoZ preamp but sounds quite different.
For more information about this build see the Russian Pass B1 FET Preamp/Buffer thread on the forum.
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