Bob Reimer just contacted me and said he has the B-1 sub crossover in stock. He also said he'll make the schematics available for anyone that orders.I've just ordered one and plan to evaluate it just like I did the Pyle sub crossover. I understand it's only available in a 220v version, so I'll probably swap transformers and I'll bet I won't stop there. I'll no doubt give it the same treatment as the Pyle crossover, doing chip and cap upgrades.