So, the John East EBMM preamp has been in for about a week.
[img:199eknap]https://lh5.googleusercontent.com/-cC5DgeyguI0/TiaePglkhWI/AAAAAAAAAnA/SePktSaSqps/s640/IMAG0076.jpg[/img:199eknap]
I really feel the C2 is complete now

A true merge of Dingwall and a Stingray. Just imagine how that should sound, and it sounds exactly like that.
Initially, I was a bit sad because the preamp hasn't changed the dramatically. The sound has become a bit more "compressed" maybe, and definitely more punchy, but only subtly. However, boosting the bass and treble makes all the difference. I can easily get all the typical Stingray sounds I can think of and a few more great sounds to boot. The bass doesn't only sound like a Stingray, it plays like one; it makes me smile, makes me want to accent that note so hard the string almost snaps and the bass reacts up to the challenge, with all the Stingray sparkliness.
On my AB-II the low B is just a string like any other, like on all Dingwalls and like it should be. But for some reason I get a special pleasure of riding the low B on the C2, and yet, it still gives me the ability to throw in a low C in basslines for four stringers and not sound overwhelming or deep. The only way I can explain this is that by attack you can get the sound from ground-shaking-B-string-has-a-voice-of-it's-own to perfectly balanced.
I am yet to make any sound samples, but I promise to do so.
The controls are: volume, the usual NSPB selector, a bass/treble stack with a push-pull bright mode and a min/sweep control. This is the John East EBMM 3 band 3 knob preamp/config you can find on [url:199eknap]http://www.east-uk.com/[/url:199eknap] with a 4 pos selector added.
As for the 4 position selector: this is the newer one, with a volume trimmer for the Series control. Initially, I've given the series setting the same volume as the parallel setting, and I've realized that the settings sound remarkably similar. Parallel had more treble, but the two could easily be mistaken for the same setting with the series setting having a treble cut. I've observed the same thing on my AB-II when playing with the trimmer. However, boosting the series setting a bit from that position made it different enough from the parallel setting. It seems only a tad louder but the character of the sound is different and the series setting sits on it's own. Installing the 4 pos was the right decision, and I don't see the need for any additional blending options.
The bass/treble stack has a circuit that's an update of the pre-EB MM preamp in components/quality but has a same sound and characteristic. You can find more info on John East's website, but basically, this is what gives the bass the MM feel. The mid/sweep stack sounds neutral by default and can be used to pinpoint the exact sound you're looking for; but the character this bass is given by the bass/treble stack. The preamp can be bought without the mid/sweep stack (the bass/treble stack is split into two single knobs) and it also loses the bright mode push-pull that, honestly, I'm yet to find a use for.
I should also note that the John East knobs are for 5mm shafts and the 4 pos selector has a 6 mm shaft so it had to be ground down to 5 mm. No biggie.
So, with this, the mod is complete. Black hardware, a de-tuner and all the other goodies are not a part of this mod per-se.
Financial report: (prices in USD)
$1200 for the bass
~$400 for the pickups and the custom pickguards (as I ordered two)
~$250 for the preamp
= $1850 USD (+ shipping and any tech work)
Which brings it to the ABZ price range.
Compared to the ABZ you lose some build quality (as in, not hand-made) which is significant, but you get a beast with a very different sound. The ABs can sound aggressive but in a very different way; the C2 stands on its own ground. The investment is very decent considering that it is still in the low-tier Dingwall price range and, very importantly, that you can do the mod as you go, you don't have to throw all the money away once.
I really feel the FD-3 pickups are a must for this mod. The preamp helps a lot but if I had to save money somewhere I'd wait with the preamp and get it later. The mid stack can also be skipped to save about $80 but it's a neat tool to have around.
Not sure if there's anything else to say... I love playing this bass, love how it looks, how it plays and how it sounds, and I have absolutely no regrets about doing this mod. I hope I've intrigued you and that maybe some day a second C2 will pop-up somewhere

Great thanks to Sheldon for his advice on the build and making me the custom pickguard, and to John East for making this awesome preamp and answering my numerous questions.
Cheers,
Bo