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RA53 HEADPHONE AMPLIFIER
The ROLLS RA53 Headphone Amplifier is a five-channel headphone distribution amplifier with a variety of
input options. There are four different ways to send a master mix to the RA53; Discreet 1/4" Right and Left
inputs, Right and Left RCA jacks, a 1/4" stereo TRS plug connected to the Right input, or a 1/4" mono TS plug
connected to the Left input. In addition to the four master mix input configurations, three separate mixes can be
monitored using the main inputs and the two Insert jacks on Channels 1 and 2. Inserting a 1/4" TRS jack into
Inserts 1 and/or 2 interrupts the master signal, sending different mixes to Channels 1 and 2, leaving the master
mix on Channels 3 through 5. A Link Input/Output 1/4" jack is provided for connecting two RA53s together,
allowing up to ten channels of headphone monitoring. Each channel has a Level control and a stereo 1/4"
Output jack. Finally, the RA53 is loud, it has plenty of gain for operation in noisy environments, and works with
most any headphone impedance.
0 10
0 10
0 100 100 10
POWER
RA53
OUT
CHANNEL ONE
LEVEL
OUT
CHANNEL TWO
LEVEL
OUT
CHANNEL THREE
LEVEL
OUT
CHANNEL FOUR
LEVEL
OUT
CHANNEL FIVE
LEVEL
FEATURES
5: 1/4" TRS Headphone Outputs
with Level Control
Lots of Gain
1/4" and RCA Right and Left Inputs
Inserts on Two Channels
1/4" TRS Stereo Input
1/4" Mono Input
Link Input/Output for Connecting Two
Units Together
ROLLS Coporation 8/97
5143 South Main Street, Salt Lake City, UT, 84107
(801) 263-9053 FAX (801) 263-9068
www.rolls.com
LEFT/
MONO
INPUT
RIGHT/
STEREO
INPUT
LINK
AUX
INPUTS
RIGHT
LEFT
CHANNEL 2
INSERT
CHANNEL 1
INSERT
POWER
12VAC
MODEL RA53
MADE IN THE U.S.A
SERIAL NUMBER
53-
SPECIFICATIONS
Input Impedance: 10 KΩ
Max Input Level: +18 dBV
Max Gain: 26 dB per channel
Maximum Output Power: 300 mW per channel
Output Impedance: 10 Ω
S/N Ratio: >90 dB
THD: <.08%
IMD (SMPTE): <.08%
Power: 12 VAC
(Adapter Provided)
Size: 8.4 x 1.7 x 5
(21.3 x 4.3 x 13 cm)
Weight: 2.5 lbs (1.14 kg)