Mic for amplifing live classical guitar

Date Updated: August 22, 2017
What would be two choices for a mic that would be suitable to use to amplify live classical guitar? My main concern is to reduce feedback howl.

1. Gain before feedback involves the entire sound system, not just the mic.
2. Recommended models:  KSM137; SM81; PGA81.   All are condenser mics with a flat frequency response.
3. Also use a shock mount holder like the A53M.
4. Search our FAQ to read about miking a classical guitar