I also like the Linear Tube Audio recommendation, but I'd also first check with Don Sachs to see what it would cost to add a headphone out to his SP14 preamp (or just call him to see what he says). I'd be pretty surprised if he couldn't meet your specs at or below your price target. Personally, that's what I'd do and never look back. I'm buying his preamp as soon as I get spousal approval. Best of luck in your search.