User Manual
PRE 1 INSTALL GUIDE
Specications
Warranty Information
All OSD AUDIO electronics have (2) year Limited Warranty against defects in materials and workmanship. Proof of purchase must accompany all 
claims. During the warranty period OSD AUDIO will replace any defective part and correct any defect in workmanship without charge for either parts or 
labor
OSD AUDIO may replace returned electronics with a product of equal value and performance. In such cases, some modications to the mounting may 
be necessary and are not OSD AUDIO’s responsibility.
For this warranty to apply, the unit must be installed and used according to its written instructions. If necessary, repairs must be performed by OSD 
AUDIO. The unit must be returned to OSD AUDIO at the owner’s expense and with prior written permission. Accidental damage and shipping damage 
are not considered defects, nor is damaged resulting from abuse or from servicing performed by an agency or person not specically authorized in 
writing by OSD Audio
OSD AUDIO sells products only through authorized dealers and distributors to ensure that customers obtain proper support and service. Any OSD 
AUDIO product purchased from an unauthorized dealer or other source, including retailers, mail order dealers and online sellers will not be honored or 
serviced under existing OSD AUDIO warranty policy. Any sale of product by an unauthorized source or other manner not authorized by OSD AUDIO 
shall void the warranty on the applicable product.
Damage to or destruction of components due to application of excessive power voids the warranty on those parts. In these cases, repairs will be made 
on the basis of the retail value of the parts and labor. To return for repairs, you must email customer service at RMA@OSDAUDIO.com for a Returned 
Merchandise Authorization (RMA) number then the unit must be shipped to OSD AUDIO at the owner’s expense, along with a note explaining the 
nature of service required. Be sure to pack the product(s) in a corrugated container with at least 3 inches of resilient material to protect the unit from 
damage in transit.
This Warranty Does Not Cover: Damage caused by abuse, accident, misuse, negligence, or improper operation (installation) • Any products that have 
been altered or modied • Any product whose identifying number of decal, serial #, etc. has been altered, defaced or removed • Normal wear and 
maintenance.
PRE1 Manual 3/16
OSD Audio | Brea, CA | osdaudio.com
Input Sensitivity/Impedance
Mic  0.5V/600 Ohms
Phono  3mV/47k Ohms
Tape,Tuner, CD/DVD, Aux  150mV/47k Ohms
Output Level/Impedance
Tape Rec  150mV/100k Ohms
Pre Output  500mV/47k Ohms
Total Harmonic Distortion
Mic  less than 0.4%
Phono  less than 0.4%
Tape,Tuner, CD/DVD, Aux  less than 0.2%
Signal to Noise Ratio
Mic  more than 50dB
Phono  more than 70dB
Tape,Tuner, CD/DVD, Aux  more than 80dB
Frequency Response  5Hz - 30kHz +0 -3dB
Tone Control
Bass  ± 12dB @ 100Hz
Midrange  ± 6dB @ 1kHz
Treble  ± 12dB @ 10kHz
Loudness Control  +4/0/+2dB @ 100/1k/10kHz
Power Requirements  AC 120V 60Hz / 220V 50Hz
Dimensions  18.9" x 2.36" x 8.25"




