USB Phono Plus Audiophile Computer Interface Project Series USER’S MANUAL
IMPORTANT SAFETY INSTRUCTION – READ FIRST This symbol, whenever it appears, alerts you to the presence of uninsulated dangerous voltage inside the enclosure-voltage that may be sufficient to constitute a risk of shock. This symbol, wherever it appears, alerts you to important operating and maintenance instructions in the accompanying literature. Please read the manual. Read instructions: Retain these safety and operating instructions for future reference.
INTRODUCTION The USB Phono Plus Project Series is a high quality USB audio interface with a built-in phono preamp. It acts as an interface between your computer and a wide variety of analog and digital sources. The analog inputs are switchable between Phono and Line level signals and a Low Cut filter removes rumble and wind noise while leaving the audio pristine. The front Gain Trim control and Signal/Clip LED allow you to optimize the analog to digital converter for a wide range of input sources.
CONNECTIONS The Preamp Phono/Line In connections are RCA-type jacks and are used to connect your turntable, tape, CD, MP3 player, or other analog stereo audio device to the USB Phono Plus Project Series. The Ground terminal connection on the rear is used to connect the separate ground wire from your turntable to reduce hum. (This connection is unnecessary for digital output turntables).
Since the USB connection will be carrying high quality digital audio to and from your computer as well as bus powering the USB interface, we suggest that you use a high quality shielded USB cable for best performance. Ideally you should connect directly to one of the USB inputs on your computer. Connecting through a shared hub can reduce power and bandwidth that is available for each USB device and should be avoided when possible. Though the USB Phono Plus Project Series is compatible with both USB 1.
INSTALLATION 1. Connect your turntable, tape player, CD player or other analog audio device cables to the RCA input connectors or connect your digital audio device to the S/PDIF or OPTO inputs on the USB Phono Plus Project Series. a. If you are using a turntable and it has a separate ground wire, attach it to the ground terminal on the USB Phono Plus Project Series. This will help to reduce hum. b. Select LINE or PHONO input for the analog source type.
signal slightly delayed, thereby creating an echo effect. This is normal behavior, so while using the BOTH setting it may be preferable to leave the Play-Through set to OFF. OPERATION WITH A COMPUTER Once the USB connection is made and your computer is on, your computer will power the USB interfaces circuitry over the USB bus and the unit will automatically connect and try to set your computer “Default Audio Device” to be “USB Audio CODEC”.
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WARRANTY INFORMATION Limited Warranty Applied Research and Technology will provide warranty and service for this unit in accordance with the following warrants: Applied Research and Technology, (A R T) warrants to the original purchaser that this product and the components thereof will be free from defects in workmanship and materials for a period of three years from the date of purchase.
SERVICE The following information is provided in the unlikely event that your unit requires service. 1. Be sure that the unit is the cause of the problem. Check to make sure the unit has power, all cables are connected correctly, and the cables themselves are in working condition. You may want to consult with your dealer for assistance in troubleshooting or testing your particular configuration. 2. If you believe that the ART unit is at fault, go to www.artproaudio.com. 3.
SPECIFICATIONS Frequency Response 10 Hz – 50 kHz, +/- 0.5% THD <0.01% typical @ 1 kHz Hum and Noise >90 dB below clipping Input Impedance 47k Ohms/100pf (phono), 270k Ohms (line) Maximum Input Level 40 mV rms @ 1 kHz (phono), +19dBu (line) Maximum Gain 45dB @ 1 kHz (phono), 6dB (line) Analog Input Connections RCA (preamp / phono/line output) Analog Output Connection RCA (preamp line output) 1/8-inch (monitor/headphone output) Maximum Output Level +6dBu (1.
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