Ozfly - Many manufacturers will make a cord for you with a 20A connector. I say this only because I wouldn't limit your search to those who make a STOCK 20 amp cord. The best cord I've found is the Harmonix Studio Master. Fanfare International imports this cord and I have compared it to the best Shunyata, Custom Power Co, TG, and other cords. I had Fanfare terminate one with a 20A connector for my Rowland Model 10 amp. Good luck
Best 20A IEC power cord
It's been a while since this topic was covered in Audiogon. I have the Sierra Denali amps and the power cords are pretty loose fitting. That aside (I'm sure they would be replaced if I asked), I have a bit of an aversion for stock cords. BMI no longer makes the 20A version. Any other recommendations? Thanks in advance.