You don't know me, but I like to make my own weather.  We should start a repository of these obscure documents.  I have a pretty good collection of them in my MP-2 dropbox folder.

On the bright side, I was really happy with the customer service that Nisshinbo Micro Devices provided.

Gregg

Why didn't you ask 

Quote from: rnolan on July 25, 2024, 03:12:45 AM

Quote from: MarshallJMP on July 23, 2024, 11:51:25 AMThe first ones weren't chinese tubes.

Hey MJMP, well it seems we were late to the party in Australia, so what were the original tubes??  I know the ones in my original top switch MP-1 were Chinese, it was stamped on the tube.  I think I still have them somewhere, but after a couple of thousand gigs they had done their dash and I replaced them with Boogie SAPX7s.

I really can't remember but I only seen these a few times, most originals were the chinese ones with the red 12ax7 letters.

I had been trying to find the datasheet for the JRC NJU8101 D/A converter used in the MP-2 online.  It didn't exist so I reached out to the folks at Nisshinbo Micro Devices who now own the JRC product line.  After a few days of hunting around, the support in folks in Japan provided me with a scan of the paper datasheet.  Posting here so that the community can benefit.  Please feel free to move this post / datasheet to a more appropriate forum if necessary.

Gregg

A friend dropped of a Blackstar 45 series one combo last night for me to futz with. I haven't tried it yet but it does look interesting.  The midi implementation is interesting, seems to be all about integrating a mid Fx device as the 4 basic sounds (clean, warm clean, crunch and super crunch) are just repeated over and over.  From the amp perspective, all the midi controls is the 4 basic voice selections, just like the pedal it comes with.

Quote from: Iperfungus on July 24, 2024, 02:32:27 AM

Quote from: David Drake on July 20, 2024, 02:28:09 PMHey Harley Were these the tubes?

Those are identical to ones I found in my MP-1.
There are Ruby's JJs now, upon MJMP suggestion, but I've to give original tubes a try, one of these days.

Hey Max, I was enamoured with the original tubes in my MP-2 until recently when I swapped them for the Mullard LPs.  Then again it's very subjective.

Quote from: MarshallJMP on July 23, 2024, 11:51:25 AMThe first ones weren't chinese tubes.

Hey MJMP, well it seems we were late to the party in Australia, so what were the original tubes??  I know the ones in my original top switch MP-1 were Chinese, it was stamped on the tube.  I think I still have them somewhere, but after a couple of thousand gigs they had done their dash and I replaced them with Boogie SAPX7s.

Quote from: David Drake on July 20, 2024, 02:28:09 PMHey Harley Were these the tubes?

Those are identical to ones I found in my MP-1.
There are Ruby's JJs now, upon MJMP suggestion, but I've to give original tubes a try, one of these days.

The first ones weren't chinese tubes.

I don't remember a brand but did say made in China under the 12AX7.