classe twenty five and classe fifteen

I run the 15 amp with a tube preamp, specifically a Modulus 3A preamp. I am very happy with the marriage.

Hey, Brf, I think the biggest change was the face plate (removal of DR from all model names) that would be the most obvious to most people. (Even the next gen of Classe (when the Fifteen change to the CA-150) was the same amp.

I like this Classe series and still own a Fifteen. Thought the bass is great, the mids and highs lack allot of detail but still sound okay, but no match for the inter detailed mids and highs from Krell of the same vintage. just mho.

The difference between the 15 & 25 are that the 25 has more pairs of output transistors.

The 15's bass was the equal of the KSA-250.

The Classe 15's bass is no where near as good as the Krell KSA 250. In fact, very few amplifiers can match the bass impact and depth of a KSA 250. Besides, what do you know about bass....you own Merlins :-)