is a 555:1 impedance ratio ok?

EQ box or no, the ratio of 135 ohms nominal output impedance to 75K ohms nominal input impedance is plenty high enough of a differential ratio to negate the possibility of matching problems. In fact, 135 ohms output impedance is on the low side for an all-tube preamplifier, though it's a safe bet that the quoted figure actually rises at the frequency extremes, and 75K ohms input impedance is on the high side for a SS amp. Still, even if the pre output figure were to hit a couple of thousand ohms in the bass region, you would probably not hear any ill effects as long as the amplifier input impedance were about 20X greater, which yours apparently surpasses.

I dont have the specs but i can call thiel tomorrow... unless someone else has them.

so do i need to match the preamp to the eq box? i wonder what a desireable pre/EQ box ratio is.

Yes, you need to match the preamp to the EQ box. I don't think you'll have any problem - the input impedance will likely be at least 75K, and as others have mentioned, that is high enough.

Good luck.

i'm not sure if this posted correctly before, so forgive me if this is a double.

does the output impedance of the EQ box change if i switch between two different preamps with different output impedances?

i think i need clarification on the relationships between input/output impedances when components are connected in chains.

The answer to your question is no. The output impedance of the EQ box is independent of the pre-amp feeding it. Or it should be.