Have had the Threshold S/300 Optical bias, the SA/1 mono's currently and model Rowland model 7's.
Threshold has never been very strong at 2 Ohm loads.
The model 5 can deliver more current then the S/500 it sounds more polite then the S/500.
According to J. Gordon Holt the Threshold S/500 was superb on Acoustat. So if you want a more laidback and smoother presentation I would go for the Rowland. If you want a more vivid and detailed one I would go for the Threshold.
They probably, the Rowland certain, will drive a 2 Ohm load (if it behaves like a Magnepan) both of them.
Success
Threshold has never been very strong at 2 Ohm loads.
The model 5 can deliver more current then the S/500 it sounds more polite then the S/500.
According to J. Gordon Holt the Threshold S/500 was superb on Acoustat. So if you want a more laidback and smoother presentation I would go for the Rowland. If you want a more vivid and detailed one I would go for the Threshold.
They probably, the Rowland certain, will drive a 2 Ohm load (if it behaves like a Magnepan) both of them.
Success