Bellari ADB3b Specifications

CHANNEL ONE
GND
LIFT
INPUT GND LIFT
The tube direct box is the DI of choice for hundreds of
studios, engineers, producers, and artists the world over.
The clear, warm quality of the tube maximizes the sound
of musical instrument pickups and interfaces. The ADB3 is
a two-channel active impedance matching device utilizing
a 7025 vacuum tube. Unlike solid state active direct
boxes, the ADB3 delivers a warm, slightly compressed
signal due to the natural softening characteristics of tubes.
Each channel features two 1/4" inputs, an XLR output, a
Ground Lift switch, a 0 to - infinity Pad control, and a +20/-
20 dB input gain switch.
The ADB3 is housed in a heavy gauge steel chassis for
durability, and is easily mounted to any standard rack tray.
It is ideal for:
Bass Players, for interfacing between a preamp and a
mixing board to achieve that warm, tight sound.
Acoustic Guitarists, the high impedance of the ADB3
insures a perfect pickup match to provide a smooth,
natural sound.
Electric Guitarists, for a clean DI sound, the ADB3 has a
clear, warm sound that retains all of the natural brilliance
and harmonics for a perfect electric guitar tone.
MODEL ADB3
12VAC
INPUT
300 MA
MADE IN U.S.A
Bellari is a division of
ROLLS Corporation
5143 South Main Street
Salt Lake City, UT 84107
11/98
+20 dB
-20 dB
ADB3b
- 00 dB 0
INPUT GAIN
OUTPUT
CHANNEL TWO
Stereo Tube Direct Box
CHANNEL TWO
+20 dB
-20 dB
- 00 dB 0
GAIN INPUT
Synthesizers, drum machines and samplers, the ADB3
warms up the sound and provides an ideal interface for the
variety of synthesizer output levels and impedances.
Digital Recording, for eliminating the harsh, often brittle
digital sound.
SPECIFICATIONS
Frequency Response:
THD:
Noise Floor:
Connectors:
Input Impedance:
Output Impedance:
Maximum Input Level:
Maximum Gain:
Size (WxHxD)
Weight:
Power:
SERIAL NUMBER
ADB3-
ADB3b
GND
LIFT
PWR
GND LIFT INPUT
-20 dB Gain: 20Hz - 40kHz, +/-1dB
+20 dB Gain: 50Hz - 20kHz, +/-3dB
.03% (0dB in, -20dB Gain)
1% (-10dB in, +20dB Gain)
>90dB (Gain switch in)
Input: 1/4" unbal.
Output: XLR transformer bal.
100K
600
+20dB (Gain switch out)
-10dB (Gain switch in)
+20dB
7.6" x 1.6" x 5.4"
(194mm x 40mm x 135mm)
2.5lbs (1.135kg)
12VAC 300ma
(Adapter included in US models)
OUTPUT
CHANNEL ONE
INPUT