After I modified mine I saw these:
http://www.recom-power.com/pdf/Innoline/R-78HBxx-0.5_W.pdf
http://power.murata.com/data/power/dms-78xxsr.pdf
http://www.recom-power.com/pdf/Innoline/R-78HBxx-0.5_W.pdf
http://power.murata.com/data/power/dms-78xxsr.pdf
I have used this one with good results but noticed it has no ripple specification after I bought it. Ripple turned out to be low, it is a multiple lower than with the XL2596. Only reason I wanted to use a better switcher is the huge voltage difference and the resulting heat. With 20V difference and 0.1A a linear reg and the series resistor need to dissipate 2W. The switcher is not even lukewarm. If I am not mistaking the dissipation will be as long as the DC plug is connected which means it will always dissipate 2W. I don't like stuff that is hot when I close my front door ready to leave home. If it would depend on me any device would have a real mains switch disconnecting it completely from mains when not used. Better in all aspects except when remote control is concerned and standby mode is needed.
https://www.pololu.com/blog/542/new-product-12v-2.2a-step-down-voltage-regulator-d24v22f12
https://www.pololu.com/blog/542/new-product-12v-2.2a-step-down-voltage-regulator-d24v22f12
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Globulegl, Linuxfan,
Could it be said that the "XMOS Alientek D8" amplifier is a selection with better sound among these models (compared to the D802 and the V200) given that the AlientekD8 has both XMOS for USB and also WM8805 chip for S/PDIF ?
Can anybody share their experience with the Alientek D8?
Thank you in advance.
Could it be said that the "XMOS Alientek D8" amplifier is a selection with better sound among these models (compared to the D802 and the V200) given that the AlientekD8 has both XMOS for USB and also WM8805 chip for S/PDIF ?
Can anybody share their experience with the Alientek D8?
Thank you in advance.
Possibly, but not necessarily. How good an amplifier sounds will always be subject to how good/bad other links in the input chain are.
So I would guess that the Alientek D8 would beat the D802 when both are using USB input.
And I would guess that the D8 would beat my V200 when both are using SPDIF input.
If you intend to use both types of input, then yes, it would probably be a good choice to buy the D8.
It should be noted that the D8 and D802 have similar amplifier chips (STA326 vs STA328) but the V200 has a different brand of amplifier chip (TI TAS5614la).
It would be an interesting, and fair, comparison to test the D8 and D802 against each other using SPDIF input - in this case neither amplifier is disadvantaged.
Linuxfan,
Yes, I intend to use it with both types of input, for a 2.1 setup priced between ($200-$300):
I was also considering the SMSL Q5 Pro since it is available in amazon.com and apparently is better build quality, but the power output on the Q5Pro is rated to be lower compared to the D802 and the D8. Although all of them are fairly small boards and chips, I don't understand the supposedly difference in power.
As far as speakers, my options so far are:
I will also try to find a used active subwoofer hopefully for less than $100.
Any comments are greatly appreciated.
Thanks,
Yes, I intend to use it with both types of input, for a 2.1 setup priced between ($200-$300):
- SPDIF for Movies with the TV.
- USB for Music with the laptop.
I was also considering the SMSL Q5 Pro since it is available in amazon.com and apparently is better build quality, but the power output on the Q5Pro is rated to be lower compared to the D802 and the D8. Although all of them are fairly small boards and chips, I don't understand the supposedly difference in power.
As far as speakers, my options so far are:
- A pair of used Pioneer SP-BS22-LR (Maybe $80~90)
- A pair of new Micca MB42X ($90 on Amazon)
I will also try to find a used active subwoofer hopefully for less than $100.
Any comments are greatly appreciated.
Thanks,
OK, if you want both USB and SPDIF input, your contenders should be Alientek D8-XMOS vs SMSL Q5-PRO.
I Googled for a comparison of these two amplifiers, and all I found was one comment on an Italian forum which preferred the D8.
Here in Australia the D8-XMOS is AU$135 and the Q5-PRO is AU$180.
I would lean towards the D8, but it's your choice.
but for dedicated music listening, I suspect the Pioneer SP-BS22-LR might be nicer.
If you're looking for maximum bang-for-buck budget speaker, and you live in the U.S., there's another option - Insignia NS-SP213 - US$50 and well regarded on various forums.
I Googled for a comparison of these two amplifiers, and all I found was one comment on an Italian forum which preferred the D8.
Here in Australia the D8-XMOS is AU$135 and the Q5-PRO is AU$180.
I would lean towards the D8, but it's your choice.
I have the Micca MB42X speakers, fed from an older model SMSL SA-36A amplifier, connected to the analogue outputs of my TV. Every time a TV program goes from spoken dialogue to music, I'm stunned by how good these small speakers are ...
but for dedicated music listening, I suspect the Pioneer SP-BS22-LR might be nicer.
If you're looking for maximum bang-for-buck budget speaker, and you live in the U.S., there's another option - Insignia NS-SP213 - US$50 and well regarded on various forums.
Hello all
This thread led me to join this community; thank you all for contributing!
Just got my d802 and Micca MB42x set in the mail yesterday. Leagues better than the Logitech Z-5300e I had. Another channel crapped out on it so I finally invested and am happy I did.
The d802 is connected via optical to an MSI Z97 MPower motherboard with a Realtek ALC1150. I hear the hiss and a small "pop" between tracks like Solve and ntdrt have reported... I figured since the issue went away for Solve when using a similar Z97 board I would not experience the issue, but, not the case.
It is pretty quiet and I can live with it, but it is noticeable.
I have not tried anything to get rid of it yet, just mainly wanted to say thank you and "check in" with the experience so far.
Cheers!
This thread led me to join this community; thank you all for contributing!
Just got my d802 and Micca MB42x set in the mail yesterday. Leagues better than the Logitech Z-5300e I had. Another channel crapped out on it so I finally invested and am happy I did.
The d802 is connected via optical to an MSI Z97 MPower motherboard with a Realtek ALC1150. I hear the hiss and a small "pop" between tracks like Solve and ntdrt have reported... I figured since the issue went away for Solve when using a similar Z97 board I would not experience the issue, but, not the case.
It is pretty quiet and I can live with it, but it is noticeable.
I have not tried anything to get rid of it yet, just mainly wanted to say thank you and "check in" with the experience so far.
Cheers!
I have Alientek D8. Sounds pretty good. Of course in "TONE" mode with EQ off.
Drives a pair of Q-Acoustics 3020.
One more advantage is headphone output, which could be utilised to feed a subwoofer.
Regarding inputs I use mostly optical, because of ground loops with my Mac Mini otherwise. In this setup it is connected to SMSL X-usb (XMOS U8, low jitter) 24/192 optical out.
That's interesting. How does it compare going USB->SMSL->Optical->D8 rather than taking the USB input straight into the D8? (thats assuming you have the xmos USB version of the D8).
yes i have made some comparaison of D8, FX and sz80A. The better is the D8.
xmos usb and better supply...
Sz80A ss the least good, but it is the prettiest and the screen is great
Same hardware as Q5 pro? https://world.taobao.com/item/16298...z0k.7386009.0.d4919233.8L4qHS&_u=t2dmg8j26111
The CS8422 has a ton of jitter - 200ps according to the datasheet - similar to CS84xx parts. I have used CS8421 - unfortunately it's nothing special.
I'm hunting for a TAS chip combo with something like SRC4392 to get low jitter I2S, and linear regulators. Haven't seen anything like this yet.
Thanks for that - very tasty, but $400 is corporate money, not personal. These amps here are around $80. I could get two STA326 amps for $40 and hack in a SRC4392 myself for another $40. All available on Taobao...
Besides, since Ti won't give me samples at my .edu email anymore, I won't order anything from them anymore either - quid pro quo. They made this commercial decision and I respect that, but it kills my relationship with them. I checked - suppliers don't have stock and list it as obsolete.
So, I've looked and now look away for something else. ;-)
Besides, since Ti won't give me samples at my .edu email anymore, I won't order anything from them anymore either - quid pro quo. They made this commercial decision and I respect that, but it kills my relationship with them. I checked - suppliers don't have stock and list it as obsolete.
So, I've looked and now look away for something else. ;-)
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