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Review : AUDINST HUD-MX1 DAC/amp - a promising newcomer (compared to Audio-gd FUN, AMB Gamma2) - Page 17

post #241 of 408

thanks for the suggestions chrisc0. a new psu sounds good to me, but i don't think i want to mess with opamps.

regarding resampler i now use the sox resampler plugin but i think the real problem is the headphone amp in the audinst.

post #242 of 408

Opamps aren't too expensive but may be hard to come by. A new psu should have an good old fashioned transformer that puts out anything between 12 and 15 volts dc. There is a 12V regulator inside the audinst, so the psu doesn't necessarily have to be regulated. A regulator in the psu is only of use if your power grid is very bad and the regulator has to remove the intense ripple. If you have something like a car battery at hand, you can try hooking that up to your audinst for testing. A battery will give you an example of what a good psu can deliver, because it hasn't any ripple and can deliver the energy very fast.

post #243 of 408

 

Quote:
treble seems to be at a  lower volume now compared to the rest of the frequency range

 

 

Oh my gush ? What do you find hot trebles then ? I had always complained about the Audinst's treble brightness. In fact Audins's trebles are the most prominent trebles In comparison to any other source I've met. The only one that surpassed it's trebles was my old XtremeMusic... 

Vary, vary strange news to hear... I can simply not believe it, if only there were some opamp rolling, but in stock condition, there is no way I can agree with recessed trebles here. 


Edited by AlexRoma - 1/19/11 at 4:00pm
post #244 of 408

He might have Sennheiser headphones. These are very colored towards the deep end.

post #245 of 408

I'm using re0s and sr225(still lively grado sound just relative to laptop the treble is less present). I still find it laid back and a bit attenuated at the higher frequencies.  I got mine used with many hours on it, and I've only put on more, maybe yours have not fully burned in yet? I noticed on page 8, audiofil posts similar findings after a long burn in period.  Also, I do prefer my treble to sparkle a bit, but still compared to my laptop out, the treble is less present.  This is from using both the dac/amp together. 
 

Quote:

Originally Posted by audiofil View Post

 

5. What I didn't pay much attention to initially was the bass response. Out of the box up till' about 100 hours it's very well behaved, flat and unobtrusive. After some 2-300 hours on it, however, Audinst's bass is a bit more present than absolute neutrality and the sound is more rounded and "bassy". It is a pleasing coloration but it can loose that ultimate drop of control and detail at times.

 

 

 

---------------------------------------------------------------

 

I'll update my original review in a few days.

I need some time to synthesize all my findings into one complete revision that will be my final take on Audinst HUD-MX1.

post #246 of 408

i really don´t know much of eletronics  and maybe this is a stupid question, but here it goes. do you think it would work (and not damage the unit) to feed it with a 12v batery(car or motorcycle batery) instead of a better ps?

post #247 of 408

Yes, that probably will work. If anything doesn't go as planned, the audinst shouldn't be damaged because its internal regulator protects the cicuit.

Edit: Please report on possible sound improvements, if you succeed.

post #248 of 408

i´m a bit afraid because of the amperage, it´s quite hight in a car batery,  but the idea is, it will give as much energy as the mx1 needs and better than any capacitor of a psu could make isnt it?

post #249 of 408

Thats right. You'll have endless power and no noise at all.

post #250 of 408

the wall power is 15v do you think the diference voltage (12v) of the car battery would be a problem?

post #251 of 408

I ran my Audinst using 12V 7Ah SLA battery safely... and the result is very-very good...

post #252 of 408

I can confirm that the harshness of the highs is almost gone after about 206 hours of burn-in. the sound is more laid back,rounded and it's nice to listen to. its almost a delightful experience i have to say.

going to bed now, will see if i share the same experience tomorrow.

post #253 of 408

Quote:

Originally Posted by amigastar View Post

I can confirm that the harshness of the highs is almost gone after about 206 hours of burn-in. the sound is more laid back,rounded and it's nice to listen to. its almost a delightful experience i have to say.

going to bed now, will see if i share the same experience tomorrow.


Tell me please what kind of power do you use ? The stock wall power, the direct USB connection, one or you've got something else ? I use the stock wall power (15V~1A).  I've got 1000+ hours on it, but trebles are still to bright and harsh..

post #254 of 408

Well, i use the stock wall power.

post #255 of 408

Well, I am glad you've made up fine synergy and live happy, enjoying the music and not the ssssssibilance..  

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