any suggestions??? this is amazing.... i can't get this kind of honky singing tone... gainy yet clean is how I would describe it...

are there any mods or perhaps speakers that would help me get close??

Besides his fingers  ... for a tone like that, you would also need 1x12 EV12L D size (ported) cab.

I think that would definitely get you in the neighbourhood.

i'm playing a es335 but not a 1967... lol...
as for the fingers...

Very good question indeed..!
D-mble amps do have an inherint tone character that`s fat, warm, sustaining and "reedy".
The Bludo seems to have this in spades.. and i know what you mean about the clean signal and slight O/D touch sensitive growl that seems to occur simultaneously...!
I think this is part of the genius of the original amp designer.

Good pickups & an EV12L will no doubt benefit you`re overall tone,
BUT.. an original D-mble will still retain it`s tone character no matter what cab it`s plugged into.
And a novice will still be able to achieve that tone,.. it just won`t be fluid sounding like an experinced player.

My point being.. the 'amp tones' of this Bludo & an original D-mble are in the amp.
Having great pkups, speaker and fluid fingers are a bonus to the already unique tones in these amps.

I have an OTS myself and although it does display D-mble tone in one way or another, i must agree I can`t achieve that tone character you`re looking for.
You can try different pre-amp tubes and speakers etc, and adjust the internal trim-pots, but I`m not so sure what you`re looking for can be found in the OTS.

I contacted Gregor Hilden on his web-site & orderd an OKKO TwinSonic from him.
He demo`s these on youtube and I found the TwinSonic and Diablo (Higher gain model) to be VERY D type built in a box.
I`m very satisfied with it through the OTS as it gets that L Carlton thing no worries.
It cant do the simultaneous clean & slight O/D growl because that`s part of the original amp circuit, but it is Very D-mble like indeed.

For another example of  D-mble tone..  have a look on youtube
Dumble ODS-100 (Owner: Peterguitlerche and you will be amazed at the sonic character of this amp in both clean & O/D.
Once again you`ll hear that Reedy tone and clean-slight growl simultaneously..!!

Cheers.

Mitch,

Good point, I found that the internal OD trimmer set to 9.00 oclock helps but I get this tone no problem with my OTS.

The tubes I found helped.  I used NOS Mullard 12AX7's and TAD 6L6WGC power tubes.

I use Gold speaker which is creamy and very articulate without being edgy

These break earlier and helped me get this tone easier.

Agreed- the stock JJ's are good - but a little soft/bland sounding- I managed to get some NOS 12ax7 RTF's in there, and sound amazing - but they're now as rare as hen's teeth, especially as a certain Mr. John Mayer has discovered 'em for his Two Rocks- oh well! 
P.S. Herby660- thanks again for the DC30- Boy, is that a great amp or what!  I find I have to toss a coin before gigs now to choose between it & the OTS!   

Practice ?

I have just been experimenting, based on what the way Matt Schofield uses his Two Rock. Turn your input volume down to 1 or 2. Raise you OD level to 8 or 9 and ratio to 3 or 4. Master on 4-5 (this is just getting the power tubes to break up a little but still not excessive volume) Now I know the accepted setting for the trimmer is 9:30 but using this scenario you will want to raise it quite a bit.

Gives a quite different tone and feel to the amp doesn't it? I think for the most part we don't play these amps loud enough to get both pre-amp and power amp into break up and what you never get from Gregor Hilden is an indication of how loud it is in the room. I bet its loud.