Thanks for the info. I have Tyler Acoustics Linbrook Speakers with a Rowland Concentra amp. I plan to use the pre-amp section of the Concentra to run the amp. I have listened to the two amps in different stores, but never together, and to get them at the house at the same time would be quite an ordeal. I have not listened to the upgrade("e" or platinum) for either amp. I can pick up a used McCormack for a pretty good price.
