ok..cant get signal...help fellow tb peeps

You shouldn't have to do that. You should only have to connect your headphones to the "headphone outs" on the ART unit.

In Reaper, under Preference-->Audio-->Devices--->Audio Systems is where you can select ASIO or WDM and others. If the ART unit didn't come with ASIO drivers it's assuming you're going to use WDM. WDM is not that great I would get a copy of ASIO4All and install that.
Then you would be able to select ASIO for your Device-->Audio System.
http://www.asio4all.com/

Which windows are you using it on?

Have you tried ASIO4ALL?

 

I just read the manual for your ART USB Dual Pre, it says:

"USB OPERATION:
Connect your analog jacks and external power supply first. If you are using one of the analog outputs for local low latency monitoring, connect that to your monitor system or headphones. Next, set the front panel controls for proper operation as per the previous sections. Then connect the USB cable to the appropriate input on your computer and lastly to the USB connector on the USB Dual Pre
.
Once the USB connection is made and your computer
is on, the USB interface circuitry will be powered by your computer over the USB bus and the unit will automatically connect and try to set your computer “Default Audio Device” to be “USB Audio CODEC”. Usually the computer will do this auto-
matically whenever a USB device is first connected, but it is sometimes necessary to make the selection manually. The same settings may need to be made in your particular audio application as well (Check your application instructions). These settings should be made while the two units are connected and powered on. Select one of the following sound recording (input) settings:

WINDOWS 98SE:
Settings => Control Panel => Multimedia
Choose the preferred device: “USB Audio Device”

WINDOWS XP:
Settings => Control Panel => Sounds and Audio Devices => Audio.
Choose the mixer device: “USB Audio CODEC”

or

Programs =>Accessories =>Entertainment =>Volume Control=> Options=> Properties
Choose the mixer device: “USB Audio CODEC”.

WINDOWS VIsta:
Settings => Control Panel => Sound => Playback Tab and Record Tab.
Choose: “USB Audio CODEC”





Latency, the time delay between your audio input and the USB output to your computer, is very short (under 2 milliseconds) in the USB Dual Pre. The latency of your recording software and computer software drivers can be much more than this. Typi
cally on a Mac the core audio interface has low latency so this is usually not an issue. USB audio drivers that come with Windows can have enough latency to cause a discrete delay when monitoring live. If this becomes an issue there are low latency
ASIO drivers available that can greatly reduce your Windows audio latency. Two current resources for low latency ASIO drivers that will work with the USB Dual Pre are:
www.asio4all.com
and
www.usb-audio.com"

 

If you're using Reaper 64 bit you may want to check if you're using ASIO4ALL 64 bit version. Here's a youtube about using ASOI4ALL with Win 7:

 

Here's a FAQ from ART's websit that may work for you:

"Q: I am using Windows 7 and am having trouble with my ART 2-channel USB product.

A: Unlike previous versions of Windows, Windows 7 defaults to a single channel and adds too much gain to the signal coming though USB audio devices. There are some things you will want to change in "Control Panel > Sound Settings" to get Windows 7 to work with 2-channel USB audio products.

The default setting for the input is 1-channel / 16bit/44.1K. In "Properties", change this to: 2-channel/16bit/44.1K.
Windows sets the Mic input gain very high by default, so this needs to be reset.
Use the "Configure" button in the Sound window to access the Speech Recognition section and select "Set up Microphone" and select "Other" under the input type.
Run a signal into the USB device and run the Windows 7 Speech Level Program, following the prompts.

After this, the gain levels will be appropriate, and both channels if the unit will be recognized."