Von Schweikert VR4 JR and Krell 400xi?

Having a pair of the VR4 JRs. I can only say if you have a chance to own a pair go for it. Whether SS or tube I love them. You may well find yourself wanting to keep the speakers long after you may want to try various other amps.
Glen. happy listening.

I drive my VR4jrs with a Krell KRC HR pre-amp & FPB300c power amps. Sound is great, balanced tonally, 3D, airy with good bass (after loading with metallised sand - I wanted to avoid lead). I am not familiar with the 400xi but suspect that it may be less mellow than the FPB300c. One thing, you will find the VR4jr will handle much better amps than the 400xi. It really is an excellent speaker, and fantastic value.
Hope this helps.

Well Ive owned VR-4IIISE and Vr-8. Krell to me was Not a good choice compared to good tube amplification. Period.
This was ksa 250 And Mda300. Maybe the newer models are better but id listen before purchase.