Preamp to go with Pass Labs Rushmore Speaker


Hi,
I'm asking for my friend in China. He has a pair of Pass Labs Rushmore speakers, and he doesn't like the Pass Labs preamp (don't know the model) that he currently has. Can you recommend a couple of high-end preamps (other than those from passlabs) that best (or better) match these speakers?
Thanks
catcher0
I also own a pair of Rushmore speakers by Pass Labs. I am using a tube preamp with my Rushmore's . Calypso, by Aesthetix .
Try the Allnic L-3000. I tried one and loved but $10K is a little more than I wan to spend on a pre-amp.
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Too little info for a good response....

What is it that he "doesn't like" about the Pass pre?

What model is it?

How much is he willing to spend?

Is he willing to buy used?

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Kind of hard to be specific without knowing if he wants a more relaxed sound or a sharper one. Short of that, I'd recommend looking into some of Conrad Johnson's newer tube preamps. I am very happy with them driving my Pass amps.