or Connect
Head-Fi.org › Forums › Equipment Forums › Computer Audio › Topping VX1... anybody try it yet?
New Posts  All Forums:Forum Nav:

Topping VX1... anybody try it yet? - Page 3

post #31 of 135
Quote:
Originally Posted by SnugOmatic View Post

 

Don't do it, because it will not help.

 

The volume control is IC based. The potentiometer is just providing the reference R for the Cirrus Logic CS3310, which is doing the volume controle.

Therefore, your problem is most likely not in the preamp stage.

 

Reagrds.

SnugOmatic

 

My theory is/was that the problem is caused by a bad reference signal from the pot to the IC.

 

If the IC gets one signal for left and one for right, I'm still not convinced that a replacement won't help.

 

Thanks for taking the time to reply!

post #32 of 135

any owners upgrade the PSU? I've heard many of these t amps limited by weak PSU's 

think they come with 7 amp and they need a full 15 amp for full wattage?

post #33 of 135

Hi,

 

this is my first post here. I ordered the VX1 last week - it's on my desk now. I really like the idea of these little digital amps. I had the TP41 before but my problem with that one was, that it is quite sensitive. It picked up and amplified noise from my PC - very annoying. Now with the VX1 the noise problem is gone - BIG RELIEF!

 

But there is one thing that I find quite strange about the sound. I'm sitting in front of my monitor (of course) with the two speakers (quite compact 6Ohm bookshelves from DENON) at each side. The sound is somehow awkward. Only when I move about 1-2 meters back from my desk, the sound becomes normal. I think that would mean that I would have to move the speakers closer to my monitor / the center, right? sadly my desktop setup doesn't allow that.

It's less obvious with music but it is very much so with movies/voices.

 

It's the same when I use the RCA input, which means it has nothing to do with the DAC - it is rather something with the amp.

 

what can I do now?

do other VX1 users experience the same?
why was is different/normal with the TP41?


Edited by kakklurch - 2/19/14 at 11:36am
post #34 of 135

I have to correct me. There is no position from where it sounds right - its always awkward. But its solved now.

 

It sounded like wrong polarity but I connected the cables the right way. So I decided to open the VX1. Guess what I fond out. One of those chinese workers had probably a very long shift and was tired - at the left output plus and minus were switched. Quality control must have been sleepy too - or is there any at all? No big deal, I just had to connect the right output the "wrong" way and everything sounds perfectly normal now.

 


Edited by kakklurch - 2/22/14 at 2:59am
post #35 of 135
Kakklurch,
You kinda stepped in & hijacked the thread for your problem. It's related to vx1, but prob should've started another.

Btw it's unlikely an amp specifically caused the symptom you describe...
Edited by vertical - 2/21/14 at 3:38am
post #36 of 135

I'm very sorry. it wasn't my intention to hijack anything. Just thought, that it would probably be a good idea to collect information to this new and rare product at one place. anyway my problem is solved now. From now on I will just post my experiences with it here.

post #37 of 135
Ok, glad your issue is resolved. I'm happy with my Topping amp...I hope that you are too now.
post #38 of 135
Quote:
Originally Posted by Arsis View Post

For the size/price I'm relatively impressed. Not enough ooomph to adequately drive the Polk Montor 70. No surprise there. Makes a nice desktop rig. I like the speaker / phones or both option. I'm using the phone jack to feed a powered sub. My biggest complaints are harshness in the treble and that it disables my mac's master volume control. I wouldn't say it's audiophile quality but it does sound pretty good. Especially the headphone amp. smily_headphones1.gif

I want to double check what you said before I order the amp because it does do this.

 

You are using the headphone output to drive the low-level input on your sub while using the amp stage to driver speakers?

 

I ask because on my TP30 the speaker output is muted when anything is plugged into the headphone jack. But the difference might be the VX1 has a headphone amp, not just a headphone jack. But I just want to be sure before ordering it.

post #39 of 135
Thread Starter 
Quote:
Originally Posted by ezas View Post

I want to double check what you said before I order the amp because it does do this.

You are using the headphone output to drive the low-level input on your sub while using the amp stage to driver speakers?

I ask because on my TP30 the speaker output is muted when anything is plugged into the headphone jack. But the difference might be the VX1 has a headphone amp, not just a headphone jack. But I just want to be sure before ordering it.
Yes, speakers and headphone jack can be simultaneously active via a front panel button.
post #40 of 135

Interesting toppic! Does de VX1 act as a sound card too? Like the Behringer UCA202 does? Im looking to a DAC for connecting my laptop (Intel High Definition Audio, motherboard chipset hm76) to my active monitors Yamaha HS7. Despite, the quality of the UCA202 is 16bit/48khz, so i I was looking for someting with 24bit/96khz. And because I want to feel "all" the potential of my speakers for a good price, I toughed the VX1 does the job. Can someone help me out with my questions and put my in the right direction because my knowledge about this subject is bad, but my ears are sharp ;) 

post #41 of 135

@techlux - The VX1 does have a DAC but no line out. Your HS7s are active and would not work with the VX1. You'll need something more like the NuForce uDAC.

 

I just received my VX1 and have to say that I am impressed. It's not perfect; but for the price and size of the device it's quite good. I don't have tons of experience but I'm comparing it to my NAD C326BEE and powering my Paradigm Monitor 7s. The highs are sort of shrill, the mids in some songs do get muddled together and it lacks the presence of a more powerful amp but still provides plenty of volume.

 

The volume pot knob on mine is loose. I haven't had a chance to try tightening it.

post #42 of 135
@headfi-Phil. No line out? I want my speakers directely connected to my dac/vx1. And connect my laptop to The dac via USB port.

Does a DAC give better sound than a mobotherboard intel high definition audio?

Thx
post #43 of 135
Quote:
Originally Posted by techlux View Post

@headfi-Phil. No line out? I want my speakers directely connected to my dac/vx1. And connect my laptop to The dac via USB port.

Does a DAC give better sound than a mobotherboard intel high definition audio?

Thx

Your speakers will connect to the VX1 and your VX1 can connect to your computer via the USB (which will use the internal DAC) or the analog line out from your computer, in which case you would be using the digital signal processing on your laptop.

 

There is no line out that you can use to run the output of the DAC to some other piece of gear. Though Arsis is using the headphone out to feed a low level signal to his sub, and I plan to do the same thing.

 

I don't have the VX1 yet, it gets here today, but the DAC on the TP30 sounds better than the Realtek ALC892 chip on my computer. Not a big difference but it does sound better.

post #44 of 135

However the Yamaha HS7 are active monitors and are expecting line level input. The VX1 is a DAC + AMP. Your speakers have built-in amps. You only need a DAC.

post #45 of 135
Thread Starter 
You could feed them from the headphone out with a Y-cable.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Computer Audio
Head-Fi.org › Forums › Equipment Forums › Computer Audio › Topping VX1... anybody try it yet?