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Questions about Tube Dacs, Monarch v. Lite - Page 3

post #31 of 109
003, I just did that, but he doesnt have one there right now otherwise he would look it up for me (including values for the other caps that got exchanged). The mod is done by LITE itself in China exclusively for PV. If you get yours and you dont mind to take some big pics of the PCB, then i can pick the values out by myself

BTW. I just scored an authentic pair of USA made Amperex White Label PQ 7308! They match really really closely, cant wait to hear them.

After a few days what still stands out with the LITE 60 is the incredible depth in soundstage. I never heard this out of a solid state DAC or CDP with my current headphone rig.
post #32 of 109
Im still waiting for my Amperex tubes, output caps, rca connectors and some other few things. Meanwhile i exchanged 4 of the standard Sanyo 2200uf caps in 2 of the powersupplies with panasonic fc low esr caps. I didnt expected to hear any difference, and seriously, i still cant believe that only changing some caps in the powersupply can make the difference im hearing! I didnt upgrade any of the caps with higher values, just exchanged the exactly same values with the panasonics.

The negative: Treble is less rolled off or more present, whichever.. The negative is that it can get shrill again with my rig, which NEVER happened only once with the stock DAC 60. On the W5000 its very easy to notice any change in the treble so this stood out.

The positive: Overall clearer sound, especially bass notes are easier to distuingish with a little tighter bass. Instrument seperation took a little step forward, soundstage is also a little more extended to left/right and in depth.


.....


After double checking the DAC and fixing following things the treble harshness was gone again: I didnt screw the PCB back in (no propper connection from PCB to housing -> no proper ground?), RCA connectors had contact to the housing because i didnt install them properly for a quick listen.
Treble, mids & bass are still clearer, just the harshness is gone
Phew!
post #33 of 109
The DAC has shipped and will be here Monday. I can't wait!! However a bit of bad news. My K1000s are at AKG for maintenance and I can't listen to it before I get them back. But that should be soon because they have been there for a while. I will call on Monday if they are not back by then to find out the status.
post #34 of 109
Some other observations i've made: LITE seems to be using the common "we'll put in whats avaible" motto. From checking out serveral stock DAC 60 pics i made out different used parts, from big caps, to the small wima caps, to resistors... Also the values on the PCB differ from whats actually put in, especially with the bigger caps.
Ie. 3300uF/40V on the PCB, actually in: 5600uF 35V
or 470uF/50V on PCB, actually inside 4times: 470uF/100V (not that bad)


Im bored today so i put the stock sovtek tubes back in out of curiosity..... That is one worthless piece of tube for sure... They should just cease production. I really dont see any reason for ever using that tube. Its really shi**y.
I noticed my Philips JAN 6922 from the 80s has oxidized contacts, but even with that it sounds ALOT better.

As said by steve before, I really suggest the best tube you can find, otherwise all the mods wont help if the music gets ruined by bad/average tubes in the output section.

Steve: What about the diodes in this DAC? Are they good enough for their application?
post #35 of 109
Thread Starter 
IC... if the tubes are taken out of the equation... what exactly are the "sonicraft" mods?
post #36 of 109
Not sure, guess I'll find out.
post #37 of 109
Quote:
Originally Posted by granodemostasa View Post
IC... if the tubes are taken out of the equation... what exactly are the "sonicraft" mods?
From what i remember its 2 sonicap output caps and some cap upgrades for the various powersupply parts. I also saw a picture with new RCA plugs and cabling, however im not sure if thats in the standard sonicraft mod. The plugs looked like vampire plugs.
post #38 of 109
Thread Starter 
Quote:
Originally Posted by bizkid View Post
From what i remember its 2 sonicap output caps and some cap upgrades for the various powersupply parts. I also saw a picture with new RCA plugs and cabling, however im not sure if thats in the standard sonicraft mod. The plugs looked like vampire plugs.
they charge 300 for that?
post #39 of 109
Quote:
Originally Posted by bizkid View Post
Some other observations i've made: LITE seems to be using the common "we'll put in whats avaible" motto. From checking out serveral stock DAC 60 pics i made out different used parts, from big caps, to the small wima caps, to resistors... Also the values on the PCB differ from whats actually put in, especially with the bigger caps.
Ie. 3300uF/40V on the PCB, actually in: 5600uF 35V
or 470uF/50V on PCB, actually inside 4times: 470uF/100V (not that bad)


Im bored today so i put the stock sovtek tubes back in out of curiosity..... That is one worthless piece of tube for sure... They should just cease production. I really dont see any reason for ever using that tube. Its really shi**y.
I noticed my Philips JAN 6922 from the 80s has oxidized contacts, but even with that it sounds ALOT better.

As said by steve before, I really suggest the best tube you can find, otherwise all the mods wont help if the music gets ruined by bad/average tubes in the output section.

Steve: What about the diodes in this DAC? Are they good enough for their application?
I always change rectifiers to Hexfreds'. There are a few high-voltage zeners in there. Don't mess with these.

STeve N.
post #40 of 109
Quote:
Originally Posted by granodemostasa View Post
IC... if the tubes are taken out of the equation... what exactly are the "sonicraft" mods?
Two teflon Relcaps on the +/-5V supply. One dual Black Gate cap on the 180V supplies. Upgrades to some other electrolytics. There is probably more...

Steve N.
post #41 of 109
Quote:
Originally Posted by granodemostasa View Post
they charge 300 for that?

The one high-voltage Black Gate is almost $100 alone. The Teflon Relcaps are about $40 each.. expensive parts

STeve N.
post #42 of 109
I absolutely love my Monarchy M24. I think it's going to be a keeper for a while to come, .

I believe it is good enough to mate well with the 'Orpheus' rig,
post #43 of 109

M24 mods?

Quote:
Originally Posted by audioengr View Post
The one high-voltage Black Gate is almost $100 alone. The Teflon Relcaps are about $40 each.. expensive parts

STeve N.
Do the Monarchy Audio M24 modifications to the Lite 50 seem reasonable for the $1,000 price increase over the stock Lite 50 (or 60)?
post #44 of 109
Quote:
Originally Posted by audioengr View Post
Two teflon Relcaps on the +/-5V supply. One dual Black Gate cap on the 180V supplies. Upgrades to some other electrolytics. There is probably more...

Steve N.
Interesting! Where is that 5V supply? I only see 1 x 8V, 2x9V and 1x180V for the tubes. Are they bypassing larger caps?
Do you have any suggestion instead of the blackgate cap? Im a little clueless about which other caps work nice in a tube power section. I was trying to find those kendeils (also read good about them on various diy sites) but they are impossible to find, kendeil only sells in large volumes says their german distributor. What values are being used with the blackgate and relcaps?

Thanks again for your help Steve.

It's really interesting to do and especially learn about these mods, but in the end i probably paid more (including soldering equipment & tools) than i would have paid for those mods avaible.

Akwok: What tubes are you using?
post #45 of 109
Quote:
Originally Posted by bizkid View Post
Interesting! Where is that 5V supply? I only see 1 x 8V, 2x9V and 1x180V for the tubes. Are they bypassing larger caps?
Do you have any suggestion instead of the blackgate cap? Im a little clueless about which other caps work nice in a tube power section. I was trying to find those kendeils (also read good about them on various diy sites) but they are impossible to find, kendeil only sells in large volumes says their german distributor. What values are being used with the blackgate and relcaps?

Thanks again for your help Steve.

It's really interesting to do and especially learn about these mods, but in the end i probably paid more (including soldering equipment & tools) than i would have paid for those mods avaible.

Akwok: What tubes are you using?
Currently the stock JAN-Philips 6922. I used to own 2x Siemens E88CC for the DAC-60M, and they were awesome! But I don't have enough money right now to purchase a quad for the M24.
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