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MHDT Orchid or Lampizator Amber 3?

I’m considering one of these. Please share your thoughts, especially if you’ve heard them. I will be streaming 70% and CD’s 30%

Jazz, R&B and classical in that order are my listening habits.

My room is 20x30 and very nice acoustics.

Current system:
Dali Epicon 8, Luxman 509X, PS Audio NuWave DSD, Cambridge CXC, Shunyata interconnects & Nordost speaker cable

Thank you!!!

jzzmusician
jazzman3
2 posts
 

I bought the Orchid dac after reading this tread .I whish to make all the upgrades recommanded,   (Vcaps,Duelund,orange fuse,resistors,cv-181) . I need some help to complete the upgrade :The main question I have before making these mods concerns the resistors .I cannot identify the brand of the different resistors. 

Audio Note ? Vishay ? As recommanded by Grannyring :


R38, R52, R36, R54 -- designed value 100R 1W

1WR34, R58 -- designed value 400K 1W

R37, R53 -- designed value 4K7, 1W

Also my old Arc sp3 preamp has a 100ohms input what would be the best value (mf) for the Vcaps ?

For the moment The sound of the stock Orchid is close to the sound of my LM 502ca , hope that the upgrade Orchid will best it .

Thanks for all the good work .


grannyring's avatar
grannyring
6,479 posts
 
Do not use the cv181 tube and adaptor as it is not the best combo for sound and can sound bright.  No Duelund caps needed.  
Vcap Odams on output 400v 2.2uf. Add Vcap Cutf .01 uf as bypass for more detail and air.  Not a must, but a nice option. 

Use a mix of resistors for best sound.  Vishay Nude ZFoils for the 100R. Audio Note non-magnetic tantalum and Shinkoh for remaining positions. 

Careful desoldering the old parts. Easy to lift pads if not careful on this unit. Very easy! You can ruin the board. 
Use WBT silver solder. 
1/2 watt resistors are fine. Audio Note leads on 1 and 2 watt resistors will not fit in the pad hole. 
I do these units for customers and at a price close to what you will do it for. I can do this for you if you are not skilled with desoldering etc...

Other upgrades can be done for a tad more improvement. 
Take care. 
jazzman3
2 posts
 
Bill, I appreciate your answered my questions. I live in Canada and there is an experienced technician here who I suppose  could make these modifications. I would like to avoid sending back and forth the unit but nonetheless I will think about your proposal as I trust your knowledge of this dac I will let you know. You can send a me message to detail what you are offering.
About the cv-181 tube, at first, like others users, you seemed exited by the sound of this tube, what changed your mind, bad tube? some report these tubes are not reliable.
grannyring's avatar
grannyring
6,479 posts
 
I reported on the thread that over time it sounded forced and a tad bright. That tube also pulls more current than the other tubes folks are trying and I think it is pushing the limits of the small tranny. I would not use it. It pulls more current than a standard 6sn7 tube as an FYI.
invalid
1,186 posts
 
That tube also pulls more current than the other tubes.


The cv181 has a heater current of .95 amps and the 6sn7 is .6 amps. Quite a few transformers were being destroyed when that tube was being sold as a 6sn7 alternate.
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