Just because it has a blow back torch does NOT mean it is NOT a high frequency start plasma cutter.
There are a lot of plasma cutters coming from China that are HF start but using a block torch. This is confusing a lot of people into buying them because they think its a low frequency plasma cutter.
One of these plasma cutters is the REAL GEAR 60 amp unit with the SL60 one torch. I also have one that is a 45 amp unit I was sent as a test unit with a S45 torch on it.