There are very happy DI owners who use solid state (SS) or even class D amplifiers. Also happy owners using their lower power (tube or SS) amplifiers. One thing I noticed with the DI is with proper speaker set up/placement they can disappear in your room. These speakers really reflect the amplifier and all upstream components convincingly. Based on my listening the sound can really change depending on the chosen amplifier. So be aware that you’ll hear whatever the sonic character of your system components. Resolution is high but isn’t analytical, in fact quite a natural presentation.
Charles