о том, какаим должен быть предусилитель.
Написано просто и по делу.
Цитата:
1. Use a high input impedance. 1M is a minimum.
2. Protect your inputs. What happens if someone hooks up 120Vac from the wall socket to the input? The common reply to this is "No one would be stupid enough to do that." Second reply "Well, they deserve what they get if they do." The correct response is "Cool! How can we do that?" because someone can, and if they can, at some point they will. Or they'll hook up the output of their 1000W car audio amp to it; same thing. Protect your inputs.
3. Know what you're doing with feedback - and without feedback. Feedback is a great tool, but it's often misapplied. High open loop feedback gain stages clip sharp as a razor when they clip. So either use high feedback stages where you *want* razor sharp clipping or where it will (almost) never clip. Use no-feedback or low-feedback stages where you want to hear the device itself. In general, soft clipping is the characteristic of a single device, or a high feedback stage emulating a response curve and never clipping.
4. Know what your power amp wants to see in terms of inputs. Give it that. It is rare for a solid state power amp to clip gracefully. Remember all those quips about getting a pig to sing?
