Rolls RP220 User Manual
RP220
Dual Tube Mic Preamp
Channel One
GAIN VOLUME
+48V
PHAN
POWER
NORM
-30dB
INPUT
PAD
INST.
INPUT
+38 dB +65
dB 0
- OO
+48V
PHAN
POWER
NORM
-30dB
INPUT
PAD
INST.
INPUT
The RP220 provides clear sonic quality and performance for the working musician, studio operator or
anyone who needs a preamp with the warm, smooth,
analog sound. Each channel utiliz es one premium 7025
tube in a unique configuration to give smooth controllable gain through tr ansformer balanced inputs. The unit
has both XLR and 1/4" inputs and outputs with a 30 dB
Pad and a Phase Reversal switches to adapt to any
performing or studio situation.
WHY TUBES?
Because they sound great! V acuum tube circuits have
a natural warming effect on audio signals because the y
react differently than solid state devices and will not
reproduce sharp transients in the music. The result of
adding a Bellari tube processor or preamp to your signal is a smooth round sound.
Preamps or signal processors are designed to provide
low noise gain or effects to microphones and instruments without coloring or distor ting the sound in an
unpleasant way. The audio signal can go directly from
a Bellari tube processor to the recorder, thus bypassing any additional solid state circuits of a mixer.
Channel Two
GAIN VOLUME
+38 dB +65
Tube preamps and processors hav e gained in popularity to
counteract the “digital sound” of contemporary digital recording equipment which may sound harsh or brittle. Tube
processors are utilized b y recording engineers who prefer
the “sound” of analog recording equipment, but like the
editing and predictability of digital recorders. Bellar i tube
processors have a more even harmonic structure, adding
that analog touch back to the signal, so they just plain sound
better .
SPECIFICATIONS
Frequency Response: 20Hz - 40kHz, +/- 3dB Mic/Line
Input Impedance: 600 Ω balanced XLR
THD: 0.1% typical
S/N Ratio: >107 dB
Max Gain: 48 dB Inst. or Line, 70 dB Lo w Z
Indicators: 5 segment output level
Input/Output jacks: XLR balanced and 1/4”
Dimensions: 3.5” x 6” x 19”
P ower: 120 V A C (230 V A C) 15 V A
Weight: 7.5 lbs (3.5 kg)
Dual Tube Microphone Preamp
dB 0
- OO
PWR
RP220
5Hz - 40kHz inst.
1M Ω Instrument
Po w er status LED
(89mm x 162mm x 482mm)
120 VAC
50/60 Hz 15 VA
MADE IN U.S.A.
NRTL /C
MODEL RP220
SERIAL NUMBER
220-
CAUTION
RISK OF ELECTRIC SHOCK
WARNING:
OR MOISTURE.
CAUTION:
NOT REMOVE BACK. NO USER SERVICABLE PARTS INSIDE. REFER
SERVICING TO QUALIFIED SERVICE PERSONNEL.
RISQUE DE CHOC - NE PAS ENLEVER
DO NOT OPEN
DO NOT EXPOSE THIS EQUIPMENT TO RAIN
TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT
OUTPUT
OUTPUT
CHANNEL
TWO
NORM
NORM
REV
-30dB
PHASE OUTPUT
LEVEL
CHANNEL
ONE
INPUT
OUTPUT
OUTPUT INPUT
NORM
NORM
-30dB
REV
PHASE OUTPUT
LEVEL
Bellari is a division of Rolls Corporation
5143 South Main Street
Salt Lake City, UT 84107
www.rolls.com
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