I was thinking of building Pete's ECC99 SRPP Headphone Amp to drive my K-1000 but the BOM is outside my current budget. I saw that Pete said that this amp was able to drive the K-1000s. I have two questions: 1) Is it worth building this to drive K-1000? It doesn't have to drive the K-1000s perfectly. It just has to drive them well enough to be delightful 2) What modifications are suggested to the original design to make this amp more appropriate for the K-1000?