best preamp under 4000 to match 4b sst

500 isn't that much, given the full waranty, local dealer support and trade in option towards future upgrades or purchase.
Both brands are exceptional and pleasure to deal with.
Whatever you end up choosing, it won't disappoint.
I guess the decision will have to come down to small differences between these two and customer support.
I own(d) both of them and can't say anything bad about'em .....even if I tried.

Can you ask your dealer for audition or take it home for a test drive?
It would make sense before pulling out the plastic.
It would let you sleep better knowing that you've made the right decision.

Cheers
Mariusz

Tvat, I haven't seen Dodd or RWA Isabella at 50% off.
Also , (I don't know about Dodd) RWA has generous trade-in program.
Vinnie might even give you full list price for your older RWA component towards the upgrade to one of his more expensive offerings.
I am certainly pleased. YMMV
One of the best customer support that I've ever encounter.
Just to give you an exemple: when I questioned Isabella's performence and doubt it being better then my own Dodd, he showed up in my house with Isabella in his hand. And no, I am not the next door neighbor. It is at least few hours drive......not many would go to such a lenght to please the customer.
I doubt that you are going to get the same service from Joe X buying used.
It is your call.
Again , nothing wrong buying used but it isn't always the case.

>>Mrstark, I can see I need to be quite specific here.<<
So do I.

Your experience on used market simply can not be matched. (ALNBM)

>>Frankly, I have never had a bad experience with any manufacturer regarding
service, information, or support on used components.<<

It is not always the case. One of the most reputable speaker manufacturers would not even answer my question and openly stated "no support to second hand owners". YMMV

>> I'll venture a guess that it will sell
very close to 50% of the original $3300 retail price<<
(please check the Dodd website not the listed prices on AgoN)

Ones again, the retail on Dodd battery preamp is $2699 NEW (directly from Dodd Audio). Please do not tell me how much it was a year ago as the author is shopping for preamp right now.

Now, about Maverick_spd's case.
We know that he lives in Canada.
We know that RWA has a dealer there and Dodd Audio doesn't.
We know about shipping costs, customs & taxes, exchange rates and repair costs if the product isn't under warranty or if warranty isn't transferable.

Do you still believe that used Dodd is a better choice????
I love that preamp but it just seems like Maverick might be better of with new RWA preamp.

Your philosophy is valid but like I said earlier.........."it isn't always the case".

Mariusz