I know nothing about the Rogers unit, so can't help you there.
Frankly, the VTPH-2A sounds so good with the stock tubes I've never given any thought to opening the case to even bother to see what tubes are in it.
And this is from a guy who has hundreds and hundreds of dollars of tubes that I've tried in my last preamp.
By the way, I have also not looked inside the Herron VTSP-360 ESP that I replaced that tube preamp with either. It's also that good.
Frankly, the VTPH-2A sounds so good with the stock tubes I've never given any thought to opening the case to even bother to see what tubes are in it.
And this is from a guy who has hundreds and hundreds of dollars of tubes that I've tried in my last preamp.
By the way, I have also not looked inside the Herron VTSP-360 ESP that I replaced that tube preamp with either. It's also that good.