Rolls Headphones HA204 User Guide

L E V E L  
O U T  
T H R E E  
OUT  
ONE  
LEVEL  
LIMITED WARRANTY  
This product is warranted to the original consumer  
purchaser to be free from defects in materials and workmanship  
under normal installation, use and service for a period of one (1)  
year from the date of purchase as shown on the purchaser’s receipt.  
The obligation of Rolls Corporation under this warranty  
Pat. Pend.  
HA204  
Headphone Distributor  
shall be limited to repair or replacement (at our option), during the  
warranty period of any part which proves defective in material or  
workmanship under normal installation, use and service, provided  
the product is returned to Rolls Corporation, TRANSPORTATION  
CHARGES PREPAID. Products returned to us or to an authorized  
Service Center must be accompanied by a copy of the purchase  
receipt. In the absence of such purchase receipt, the warranty  
period shall be one (1) year from the date of manufacture.  
This warranty shall be invalid if the product is damaged as  
a result of defacement, misuse, abuse, neglect, accident, destruction  
or alteration of the serial number, improper electrical voltages or  
currents, repair, alteration or maintenance by any person or party  
other than our own service facility or an authorized Service Center,  
or any use violative of instructions furnished by us.  
• Single input, four output headphone/  
earphone amplifier  
• Slider volume controls  
• Battery operation / AC adapter optional  
• Full frequency response  
• Lots of output level, it's loud.  
The HA204 is for expanding or generating headphone  
channels. It has a 1/8" stereo input, four volume controls,  
four 1/8" stereo output jacks, and is powered by a single  
9 volt battery, or optional AC adapter. The unit has 20Hz  
to 20kHz frequency response and is small and easy to  
use.  
This one-year warranty is in lieu of all expressed warran-  
ties, obligations or liabilities. ANY IMPLIED WARRANTIES,  
OBLIGATIONS, OR LIABILITIES, INCLUDING BUT NOT  
LIMITED TO THE IMPLIED WARRANTIES OF MERCHANT-  
ABILITY AND FITNESS FOR A PARTICULAR PURPOSE,  
SHALL BE LIMITED IN DURATION TO THE ONE YEAR  
DURATION OF THIS WRITTEN LIMITED WARRANTY. Some  
states do not allow limitations on how long an implied warranty  
lasts, so the above limitation may not apply to you.  
IN NO EVENT SHALL WE BE LIABLE FOR ANY  
SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES  
FOR BREACH OF THIS OR ANY OTHER WARRANTY,  
EXPRESSED OR IMPLIED, WHATSOEVER. Some states do not  
allow the exclusion or limitation of special, incidental or conse-  
quential damages so the above limitation or exclusion may not  
apply to you. This warranty gives you specific legal rights, and you  
may also have other rights which vary from state to state.  
Rolls Corporation  
Salt Lake City, UT  
3/02  
 
INTRODUCTION  
BOTTOM  
Thank you for your purchase of the HA204 Headphone Distributor (Pat.  
Pend.). The HA204 will power four pairs of stereo earphones or headphones  
for high quality audio monitoring.The unit is ideal for expanding head-  
phone/earphone outputs on portable CD players, DVD players, electronic  
game units etc.  
Battery Cover: For battery replacement,  
carefully press in the tab at the top of the  
battery cover and remove the battery.  
Replace with new 9 volt (alkaline recom-  
mended) battery observing polarity. Place  
the new battery into the HA204 battery slot  
and replace the battery cover.  
DESCRIPTION  
REAR  
STEREO INPUT: Stereo 1/8" TRS jack for  
connection to a stereo line-level source.  
This jack may also be connected to a  
stereo headphone output.  
DC PWR: For connection to an optional  
AC power supply. Rolls Model PS27 12VDC, 150mA.  
ON/OFF SWITCH: Connects/disconnects primary power to the HA204.  
TOP  
ON  
STEREO 12VDC  
INPUT  
OFF  
+
PWR LED: Indicates that the HA204 is in  
operation via battery power, or connected  
to an external AC power supply and is  
receiving power.  
-
PWR  
2x4  
two by four  
Headphone/Earphone  
SPECIFICATIONS  
Amplifier  
Pat. Pend.  
Input Impedance:  
Max Input Level:  
Input Connectors:  
Outputs:  
Output Impedance:  
Max Gain:  
100K W unbalanced  
+14 dBV  
Stereo 1/8" (3.5mm) TRS phone  
(4) 1/8" (3.5mm) Stereo TRS phone  
51 W each output  
20 dB/Channel  
LEVEL 1 - 4: Controls the level of the  
indicated channel output.  
LEVEL  
LEVEL  
S/N Ratio:  
THD:  
>90 dB  
<.008%  
OUT  
ONE  
OUT  
THREE  
IMD (SMPTE)  
Power:  
<.008%  
9V battery (not included)  
12 VDC adapter (Rolls Model PS27)  
1 lbs (.45Kg)  
Weight:  
Size:  
FRONT  
OUT ONE - FOUR: 1/8" stereo TRS jack  
for connection to stereo headphones/  
earphones.  
3" x 4" x 1.25" (8 x 10 x 3.2 cm)  
CAUTION: Plugging a mono plug into  
the Phone Outputs may cause permanent damage to the unit. Use ONLY  
TRS stereo plugs in these jacks.  
 

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