What's the best amp s for Lowther drivers?

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What you are also looking for is a very "quiet" amp (due to the stated efficiency of your speakers) and 3 watts per channel should be plenty of power.

The DX-3 can get a great sound with plenty of volume with 5 watts of tube. I would think 15 or more watts with SS would be great. What is the size of your room?

As Dekay said remember, more power is often more distortion and noise. Were talking .5mA and less being audible with effecient speakers. You want a fine quiet amp.

I remain,