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Overview: NAD's PP-4 combines the award winning PP-2I MM/MC
Phono Preamp with a high quality Analog-to-Digital converter and USB interface.
Utilizing VinylStudio Lite PC Software, you can convert records and tapes to CD.
The PP-4 also includes the same analog outputs as the PP-2I for connection to an
analog stereo system.
RIAA EQ: The PP-4 phono preamp consists of a low noise
discrete MC preamp followed by a low noise opamp-based RIAA MM stage
incorporating a 12dB/octave infrasonic filter to attenuate turntable "rumble"
noise. The output feeds the Line Output as well as the soft clipped input of an
A/D converter with USB Output. This can be connected to any PC for recording
from vinyl disc to a hard drive. The built-in passive equalizer curve follows
the RIAA standard within 0.3 dB, measured from 50 Hz to 20 kHz.
USB Port: Using the USB (type-B) port on the front-panel, the phono
signal can be routed to your computer; with the included VinylStudio Lite
software LPs are easily converted to CD (Macintosh version available on NAD's
web site). The PP-4 has an analog to digital converter (A/D) that optimizes the
gain for the best signal to noise ratio and lowest distortion. The USB output is
16-bit linear PCM signal sampled at 48 kHz.
Note: In order to save the tracks as MP3 or MP4/AAC
files, you must upgrade to the full version of VinylStudio Lite software.
MM/MC Compatible w/ Discrete RCA Inputs: The PP-4 accepts inputs from either moving
magnet (MM) or moving coil (MC) cartridges. On the rear panel there are separate
RCA inputs for MM and MC, and a switch to choose which you are using.
Line Input: An additional stereo RCA line input allows you to send a standard
source to the internal A/D converter and use the included software to record to
your computer. A switch on the rear panel selects the phono or line input.
The line input can also replace the input on your receiver taken by the PP-4.
Line Output: A rear panel stereo RCA output is used for connecting the
phono preamp to your home stereo receiver.
Ground: A post on the rear panel provides easy grounding for
Volume Control: The PP4 front-panel volume control applies to both the
MM and MC inputs and the Line In inputs; 0 to -6dB reduces the level via the USB
output to the PC to prevent clipping.
External Power Supply: The NAD PP-4 operates off of standard
household current (120V AC, 60Hz) using the supplied AC power adapter (23.5V DC,
60mA). The external power adapter is separate from the phono preamp to further
improve sound quality.