I have the main analog board, the power supply board, the 2 custom torroidal transformers, and the drawings for the Sonic Frontiers Line 3 preamp. The boards are emplty. it's a balanced all tube DC servoed preamp with 26 power supplies if you want something interesting to build. It's a 2 chassis preamp. $400 for everything. ( the transformers sell at Parts Connexion for $300)
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