[wushuliu]

 
Quote:

Why not to prove they are fakes, instead of saying there is a good chance that are not genuine.
Raindrop is really a good seller...honest seller. Lukasz Fikus lampized a couple of raindrop boards and not even mentioned the idea of fake components.. neither a single capacitor nor the DAC itself. I prefer to believe in my ears and in Lukas option 

.


 

 
   I am not saying Raindrop boards are not good boards, nor am I saying he is not an 'honest' seller per se - I have bought several boards from him in the past (TDA1541, AD1865) and he is very nice and responsive. They are well built and sound very good. However, the fact remains there are *many* fake NOS DAC chips out there. Given how hard it is to find genuine *inexpensive* AD1865 chips OUTSIDE of China, I am very skeptical. Maybe he's sitting on an old stockpile of TDA1541 and AD1865. I could be wrong; but do a search on diyaudio or elsewhere on fake chips to get informed. Yes Lukasz is great. I also did Lukasz' mod on my AD1865, but just because he didn't compare to see if the chip is fake does not mean it isn't. Anyway how would you know if the chip is fake or not if you haven't compared? All I am saying is it is better to be on the safe side and make sure... That said, even if the Raindrop AD1865 is fake it *does* sound very good

 
 

 

[Chefano]

yeah ...
 
Quote:

 

 
   I am not saying Raindrop boards are not good boards, nor am I saying he is not an 'honest' seller per se - I have bought several boards from him in the past (TDA1541, AD1865) and he is very nice and responsive. They are well built and sound very good. However, the fact remains there are *many* fake NOS DAC chips out there. Given how hard it is to find genuine *inexpensive* AD1865 chips OUTSIDE of China, I am very skeptical. Maybe he's sitting on an old stockpile of TDA1541 and AD1865. I could be wrong; but do a search on diyaudio or elsewhere on fake chips to get informed. Yes Lukasz is great. I also did Lukasz' mod on my AD1865, but just because he didn't compare to see if the chip is fake does not mean it isn't. Anyway how would you know if the chip is fake or not if you haven't compared? All I am saying is it is better to be on the safe side and make sure... That said, even if the Raindrop AD1865 is fake it *does* sound very good

 
 

 

 

[ETAHL]

I can see opamps easily faked by re-marking. Their packagings are identical.
But faking DACs, that might be a stretch. Considering the packaging varies, fakers must be pretty resourceful to pull it off. Most likely their efforts will not be very profitable, due to the small market for them. I am sure there are plenty of sources of these 'out-of-date' DACs from surplus houses, service departments and electronics salvage yards.

 

[wushuliu]

Quote:

I can see opamps easily faked by re-marking. Their packagings are identical.
But faking DACs, that might be a stretch. Considering the packaging varies, fakers must be pretty resourceful to pull it off. Most likely their efforts will not be very profitable, due to the small market for them. I am sure there are plenty of sources of these 'out-of-date' DACs from surplus houses, service departments and electronics salvage yards.

There are plenty of discussions on this topic in other forums. A simple search will suffice.

 

[Chefano]

Third and last unit on its way to my home, as I dont have a logic analyzer nor time to track the problem down, its better to afford a new one

 

[ETAHL]

Quote:

Third and last unit on its way to my home, as I dont have a logic analyzer nor time to track the problem down, its better to afford a new one

Most likely heat is the problem. I leave my top cover off to keep it nice and cool.

 

[Chefano]

yes.. heat is a problem. Im using (was)  the Dac plugged to my SLA battery and the LM317 really gets hot. Lots of mods need to be done in the next mod

 
Quote:

Most likely heat is the problem. I leave my top cover off to keep it nice and cool.

 

 

[ardilla]

 8-13V adjustable

 

[ardilla]

9V will resolve the heat issues 
9V will resolve the heat issue 
9V will resolve the heat issu 
9V will resolve the heat is 
9V will resolve the heat i 
9V will resolve the heat  
9V will resolve the hea
9V will resolve the he
9V will resolve the h
9V will resolve the 
9V will resolve th
9V will resolve t
9V will resolve
9V will resolv
9V will resol
9V will reso
9V will res
9V will re
9V will r
9V will
9V wil
9V wi
9V w
9V
9
.

 

[ETAHL]

 
Quote:

 8-13V adjustable

Or if you are a diehard DIY guy, add an external LM317 adjusted to 9V with additional filtering in a small box, inline with your 12 volt power source. The input would have a female power connector and the output a wired male plug, it would be just plug and play.

 

[]eep]

I adjusted the Teradak PS to 10,5V and that completely took care of the heat issue. So just 10% off and you're fine.

 

[ardilla]

Muse Dac says 9-13V DC on the inside (positive center) on the PCB (far left corner on this picture)

 
 
 
 
TeraDak PSU is made to be adjusted manually -  8-13V - It delivers more than enough ampere. It is positive center. 
(it's called Upgraded Power Supply for Teralink X1 or X2 on ebay)

 

[Chefano]

Well, I dont plan to buy an external PSU. I really like the sound when using my 12V SLA battery.
As soon as receive my new unit Im going to publish here all my evil mods 

( if the third survives LOL) ..including a solution to LM heat.

 

[pasgod]

Quote:

This "Octave" is extremely promising...great to read up on this company...this is very tightly engineered...is this THE ULTIMATE NOS DAC?  Or is Audio Note and Zanden the only way to go?  I am extremely interested...in the ULTIMATE NOS DAC. 

 

The complete review of the Octave by 6moons is finished
http://www.6moons.com/audioreviews/metrum/1.html
 
It has received a Blue Moon Award.
 

 

[viatraco]

 
 
 
 
TeraDak PSU is made to be adjusted manually -  8-13V - It delivers more than enough ampere. It is positive center. 
(it's called Upgraded Power Supply for Teralink X1 or X2 on ebay)

 
 
 
I bought this PSU. Blue trafo is 9V that means it is 9V*1,42=12,78V output before stabilization. I don't know transistor dropout ( I hope it is very low drop ,less than 1V). Yes we can adjust to 13V but trafo is too small (voltage) and pushing PSU over 11V is too much. PSU will work but regulator might be not working properly. Am I wrong ?
 
I'm too lazy for A/B comparision teraPSU with my previous linear 20$ PSU ( my little mod with Nippon LXV cap).
 
BTW, TeraPSU is very well built but don't buy it for feeding Musical Fidelity V-DAC. LM7809 in V-DAC is 9V stabilizator with minimum 2V dropout .I think these specification is too high for Teradak PSU.