Yes the brass screw - and yes there are a few different versions of the DC-30W.   Here are two I have:

Bob, any thoughts on the Teradak Bladelius vs. DC-30 Touch?  Is the Bladelius new?     I started a thread on the DIY board just to see what happens:   http://www.head-fi.org/t/803109/looking-to-make-a-linear-regulated-5-volt-power-supply-suggestions-please#post_12458576   Bladelius...

  Hi rb2013, would it be possible to power an iFi iPurifier or Singxer F-1 with this Teradak DC-30W even if the output is 5V 3A instead of the classic 5V 0,5A of the usb bus?   If yes what cable do you use? if I understand correctly the DC-30W comes with a DC Cable only   thanks!

If it takes 12v DC and < 1.5A, you can get a Teradak DC-30w 12V DC version(there is a AC version, be careful). It is better than a lot of linear power supplies and not cheap. Either from ebay/aliexpress or from the Teradak producer official store on taobao.com(Teradak(少帅音响)). And its official...

  Is it the really small golden screw on the blue parts?   Anyway, how can they have such difference in prices? - TeraDak DC-30W-TOUCH DC5V 3A = 120USD - TeraDak DC-30W 12V/1.5A FPGA = 60USD   Are there more DC-30W model?? I've asked the seller for clarification.... 

Whats the difference between Teradak dc-30W and the x1/x2? http://www.ebay.com/itm/TeraDak-TeraLink-X1-X2-DC8-5V-1A-USB-DC5V-port-Linear-Power-Supply-/181467993450

If I keep the streamer I'm thinking of buying a Teradak DC-30W LPS or what might be an upgraded version a DC-30W Touch. What size power cord connecter do I need for to match the Zen Streamer?

How would you connect the TeraDak DC-30W to the DAC? All I see is a DC out.

DC-30W has better parts including an R-core transformer. Its voltage is also adjustable (I don't know if the X1 is adjustable). I am using one with USB Regen + F1 and it sounds excellent.

Well you are right the DC-30w can be set for 5VDC  - but does not have a USB port.  You would have to get a 2.5mm to USB adapter cable.   Or you could get a cheaper iUSB2.0 and set the DC-30w to 9VDC  to power it.  The iUSB2.0 has a USB power port.  You could add a iPurifier2 to it and a DC...

...3.0 circuit board could also be made available to us legacy Valab DAC owners). Aesthetically it would be 'really nice' if both the TeraDak DC-30W and 'new' TeraDak DAC have identical looking cases. Myself I prefer the slightly taller case of the DC-30 with the silver faceplate and black...

Thanks for all the microRendu reports. As another point of PS reference (this is for my W4S Recovery USB device) I recently compared a Kingrex uPower battery power supply to a TeraDak 30W, both with and without using the iFi DC iPurifier. The TeraDak showed noticeable improvement, especially in...

If you want a real power supply: http://www.ebay.com/itm/TeraDak-DC-30W-For-NuForce-Icon-HDP-power-source-15V-1-6A-Linear-Power-Supply-/131154448926

This is the basic one of DC-30w, $84 with shipping to US today. Teradak has a very long history on low voltage DC linear power supply. https://www.ebay.com/itm/TeraDak-DC-30W-FPGA-12V-1-5A-Linear-Power-Supply/183841406285?hash=item2acdcd3d4d:m:mabVZVSaWwTCyRG_gIbV51w

Here would be my current ranking and ratings:       DXIO Silver/TeraDak DC-30W/Cerious     130 PUC2 Lite TeraDak X1/FR caps/Cerious    125 DXIO Black/TeraDak DC-30W/Cerious      118 unit not working properly PUC2 Lite - USB power                          110 Breeze with Cerious...

Ok ordered up a few dozen Nichicon HW's and Pannie FR 25V 1600uf caps to begin the TeraDak R-Core DC-30W modding.  These very low impedance and high PSRR caps should be a nice improvement over the cheapo generic ones TeraDak uses.  Each DC-30W takes 10 caps.   Wish I could find those Pannie...

http://www.ebay.com/itm/TeraDak-DC-30W-For-NuForce-Icon-HDP-power-source-15V-1-6A-Linear-Power-Supply-/131154448926 Are these equivalent to the above mentioned power supply?

Yes the TeraDak DC-30w has adjustable voltage - the little brass screw on top of the little blue box.

The female barrel connector on the Zen Stream is 5,5mm x 2,1mm. The typical DC power cord that comes with a Teradak LPS is a 5,5mm x 2,5mm male barrel plug with two tiny springs that makes it fit a female 2,1mm connector. It can be used in the Zen Stream, but will not be optimal. It will be a...

Rb- I think the better DC 30 power supply though you show here is for DC only eh? And I use the Teradak X1 for the power leg of my split USB cable for the F-1 and the PUC. So I can't replace the Teradak with the bigger Teradak because there's no USB 5V power out on the DC 30 right? If that's...

...the F-1 over many months.  The addition of a Recovery or Regen (fed by the TeraDak) adds a much better SQ.  Also the more expensive TeraDak DC-30w with the R-core transformer and pannie caps is better then the X1/X2.   I did swap out the caps on one X1/X2 - the generic gray chinese for...

Thanks for the answer.   wouldn't it be better a good LPS such as the TeraDak DC-30W+iPurifier 2 instead of Regen/Recovery/iUSB that have external DC input? 

It feeds the DDC F-1 through a W4S Recovery.

http://ifi-audio.com/portfolio-view/accessory-ipower/   iFi has a 12V 1.8A iPower thinking of getting that for the Startech LAN REX or a DC iPurifer to use on the stock SMPS.  With the DC iPur I could use later with a cheap LPS like the TeraDak DC-30W

...voltage ouputs, 5vdc from the USB, and an adjustable voltage from the 2.5mm cable. Pretty sure they are separate. One other note the TeraDak DC-30w loves the Cerious Graphene Xtreme power cord, this makes a significant improvement. Feeding the DC30 from a dedicated PB4X4 Pro line conditioner...