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Post subject: Hardware capable of receiving audio with USB?
Posted: Wed May 18, 2011 12:44 am
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OK, i know currently you only can send audio via USB but i was wondering if this is because of the hardware limitations.
It would make life so much easier if the USB could also receive audio.
You would not need another interface for monitoring, you would not need to configure and use the Fender universal USB interface and for me the most important; you could use direct monitoring (pluggin in headphones with audio coming from your DAW mixed with the direct sound coming from your amp).
So my question is: Is the hardware capable of receiving audio via USB and could this be done with a future firmware update?
If so it would be my foremost feature request as it is IMHO the biggest flaw!


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Post subject: Re: Hardware capable of receiving audio with USB?
Posted: Wed May 18, 2011 2:23 pm
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hi :-)

Are you sure its working one way at all ?

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Post subject: Re: Hardware capable of receiving audio with USB?
Posted: Wed May 18, 2011 3:56 pm
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Hi,
Yes, i'm sure...
Quote:
While your Mustang™ amplifier can output audio through USB, it cannot receive audio input through USB. Therefore, output from any audio app, including AmpliTube Fender LE, must be handled by an external source.
Quoted from the following page:
http://www.fender.com/en-NL/support/art ... d-playback


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Post subject: Re: Hardware capable of receiving audio with USB?
Posted: Thu May 19, 2011 11:55 am
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Hi Henky,

The Mustangs being restricted to one way USB operation is indeed due to it's hardware. I'm also a fan of bi-directional interfaces. However, the Fender ASIO driver would still be necessary to pass low-latency audio from the amp to the computer and back. The latency produced the built-in DirectX driver is less than acceptable in most cases.

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Post subject: Re: Hardware capable of receiving audio with USB?
Posted: Thu May 19, 2011 2:43 pm
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Hi Loren,

First of all, i really appreciate it that you take the time to answer questions in this forum.
It shows why Fender is the big name that it is and not just another company trying to make bucks and neglacting it's user community as i've seen so many times.

What i ment with direct monitoring is the following setup:
You plug in the headphones into the Mustang then you mix the signal coming back from your DAW with the sound of the amp itself.
This setup is quite common with guitar effect devices with buildin USB audio interfaces like the BOSS GT-10 or the ZOOM G2.1Nu.
The major advantage is that latency does not play a role anymore;
The amp signal is direct so no latency at all and any latency while recording or playing back is corrected by the DAW.
If the latency was 10 seconds then still it would not matter with such a setup.
Such a shame that the hardware will not allow such a setup, it would make life so much easier.

OK now for my current problem with the Fender universal ASIO driver.
This absolutely does not work with my current system being: Windows 7 64bit with Cubase 6.
When i choose the Fender universal driver in Cubase then Cubase crashes.
Of course i contacted Steinberg about this but they point the finger at Fender.
Now i can get it to work with Steinberg's own generic driver and with ASIO4ALL so they may be right about it being due to the Fender universal driver however because i can not use the above mentioned setup with direct monitoring, latency becomes an issue after all and with Steinberg's driver and ASIO4ALL it is less than acceptable to monitor your own playing on the guitar.

So far my little story and thanks in advance for listening.
Don't get me wrong i still love my Mustang and think it's great, but with a good working (bi-directional) audio interface it would have been perfect.


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Post subject: Re: Hardware capable of receiving audio with USB?
Posted: Fri May 20, 2011 9:37 am
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Hi Henky,

The first image on the Fender support page you linked to is a little confusing.

In that image:
"Output audio device" is selected as "Fender Universal ASIO" with "Left output channel = Headphone/Speakers 1" and "Right output channel = Headphone/Speakers 2".

That must be a screen shot for setting up the driver for a G-DEC - which does have two way audio communication...

That field should point to a audio device other than Fender Universal ASIO - in other words, your built in sound card or audio interface.

Note in the second image that the "Realtek High Definition Audio" (the default audio device on the computer it was shot on - no doubt...) has the output enabled but the inputs are disabled.

Since the Fender driver doesn't work on Windows 7 you can use the latest ASIO4ALL. It will have the same general look as image 2 because the Fender driver is based on the ASIO4ALL driver (rebrand?). So, you still need to disable the inputs on your built-in soundcard/audio interfaces (all of them if you have more than one). Just leave their outputs enabled.

Make sure that the "Mustang Amp" has it's inputs enabled. Then play with the buffer size to get the lowest latency with out dropouts, stuttering or noise artifacts.

Connect a cable from your computer's soundcard "line out" or "headphone out" (be careful of the volume level on this one!) to the AUX input on the Mustang and you can monitor from the amp...

Just one thing... In your DAW, do not monitor the armed track you are recording! If you do, you'll set up a feedback loop through the amp. You don't need to monitor the track your recording, you are monitoring at the source (the Mustang amp).


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Post subject: Re: Hardware capable of receiving audio with USB?
Posted: Fri May 20, 2011 10:50 am
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Great information P90sdude. Your instructions are spot on. Just one small correction. The Fender Universal ASIO driver is compatible with Win 7.

Henky - Hopefully, any future amps will have the bi directional USB communication. There are many of us here who would like to see that. Try following P90sdude's instructions to get up and running. Please let us know if it still doesn't work.

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Post subject: Re: Hardware capable of receiving audio with USB?
Posted: Fri May 20, 2011 10:55 am
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Thanks p90sdude,

I haven't thought of running a cable into the aux input for monitoring because i presumed the signal coming in through the aux input would also be send through the USB interface and if so that would create an infinite loop.
This is definitely something i am going to try, i guess the routing in the amp itself is not as straigth forward as one might expect it to be.
Let's face it; the phones out is a mix of the amp and the aux input but the audio signal going over the USB interface is only the amp without the aux signal.
It must mean the audio signal for the USB is send BEFORE the aux input is mixed to it and send to the phone out...
Who would expect it was routed this way and i didn't read it anywhere in the manual.
But OK, if your information is correct and the signal put into the aux input is NOT also being send over the USB interface then my problem is solved.


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Post subject: Re: Hardware capable of receiving audio with USB?
Posted: Fri May 20, 2011 11:53 am
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OK i tried it and ..... it works, great, i'm happy. :D
Just for the record: what you put into the aux input is NOT recorded via the USB interface.


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Post subject: Re: Hardware capable of receiving audio with USB?
Posted: Fri May 20, 2011 7:59 pm
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Loren Howard - Fender wrote:
Great information P90sdude. Your instructions are spot on. Just one small correction. The Fender Universal ASIO driver is compatible with Win 7.

Sorry Loren, I'm running XP sp3 and have never used Vista much less Windows 7. Didn't mean to spread any misinformation. :oops:

I've just read a few posts that kinda indicated that it didn't, but I guess that could just be pebcak.


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Post subject: Re: Hardware capable of receiving audio with USB?
Posted: Fri May 20, 2011 11:56 pm
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I don't know about win 7 in general but i can confirm that the Fender universal ASIO driver can not be used with my system (win 7 64bit with Cubase 6).
Cubase crashes on just selecting the Fender universal ASIO driver.
However ASIO4ALL works just fine, so that's alright with me.
Might be something to look into for the technical guys though.


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