INTRODUCTION
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.
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
PWR LED: Indicates that the HA204 is in
operation via battery power, or connected
to an external AC power supply and is
receiving power.
LEVEL 1 - 4: Controls the level of the
indicated channel output.
FRONT
OUT ONE - FOUR: 1/8" stereo TRS jack
for connection to stereo headphones/
earphones.
CAUTION:
Plugging a mono plug into
the Phone Outputs may cause permanent damage to the unit. Use ONLY
TRS stereo plugs in these jacks.
SPECIFICATIONS
Input Impedance:
100K
9
unbalanced
Max Input Level:
+14 dBV
Input Connectors:
Stereo 1/8" (3.5mm) TRS phone
Outputs:
(4) 1/8" (3.5mm) Stereo TRS phone
Output Impedance:
51
9
each output
Max Gain:
20 dB/Channel
S/N Ratio:
>90 dB
THD:
<.008%
IMD (SMPTE)
<.008%
Power:
9V battery (not included)
12 VDC adapter (Rolls Model PS27)
Weight:
1 lbs (.45Kg)
Size:
3" x 4" x 1.25" (8 x 10 x 3.2 cm)
STEREO
INPUT
PWR
4
3
2
OUT
ONE
OUT
THREE
OUT
FOUR
OUT
TWO
1
LEVEL
LEVEL
LEVEL
LEVEL
12 VDC
+
-
ON
OFF
Pat. Pend.
www.rolls.com
2x4
two by four
Headphone/Ea
rphone
Ampli
fie
r
BOTTOM
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.
