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DB425

Rolls DB425 Operating instructions

  • Hello! I've reviewed the user manual for the ROLLS Audio Presenter DI DB425, a passive 4-channel direct interface with instrument/line level inputs, balanced XLR outputs, and ground lift switches. I'm ready to answer any questions you have about its features, connections, and usage.
  • What kind of inputs does the DB425 have?
    What is the output of the DB425?
    Does the DB425 need a power supply?
    What is the purpose of the ground lift switch?
Connection guide
Rolls Corporation
Salt Lake City, UT
8/23
What's in the box?
1 - Made in USA DB425
1 - This owners manual
DB425 4 Channel DI
- Home
- Studio
- Broadcast
... Anywhere you need a professional 4 Ch. direct interface.
The DB425 employs an exclusive, specially
crafted audio transformer to transform sig-
nals from devices operating at either line or
instrument levels into a nely balanced XLR
output that aligns with professional standards.
The incorporated ground/lift switches provide
you with comprehensive authority over signal
noise, enabling eective management of
ground loops directly at the source. SPECIFICATIONS
Input Impedance: 20k Ohms
Frequency Response: 35 - 20kHz +/- 3 dB
Output Impedance: 600 Ohms
Max Output Level: +4 dBm
Connectors: 4 - XLR Male, 8; 1/4” Jacks
Controls: 4 - Instrument/Line, 30 dB attenuation
4- Ground Lift switch
Weight: 2.1 lb.
Dimensions: 6.75" w x 4" d x 1.7" h
Switch to select input
level. Instrument or
line level.
Channels 1 - 4 are identical in operation and features
DB425
INPUTS 1
INST
LINE
INPUTS 2
INST
LINE
INPUTS 3
INST
LINE
INPUTS 4
INST
LINE
LIFT
GND
DB425
OUTPUT 4
LIFT
GND
OUTPUT 3
LIFT
GND
OUTPUT 2
LIFT
GND
OUTPUT 1
DB425
INPUTS 1
INST
LINE
INPUTS 2
INST
LINE
INPUTS 3
INST
LINE
INPUTS 4
INST
LINE
LIFT
GND
DB425
OUTPUT 4
LIFT
GND
OUTPUT 3
LIFT
GND
OUTPUT 2
LIFT
GND
OUTPUT 1
Dual 1/4” inputs. These inputs
are converted to mono so any
stereo input will work along
with any mono signal.
Ground - Lift switch
for each output XLR.
XLR balanced output
for connection to any
XLR mic input on a
PA, mixer board or
other device.
Introducing the DB425 Audio Presenter DI: Your Ultimate Audio Solution. Experience seamless audio con-
nectivity with the DB425 Audio Direct Interface. This ingenious adapter oers a direct input, employing cus-
tom made fully potted balanced nickel laminated transformers for exceptional studio signal quality. Unlike ac-
tive models, the DB425 is a passive device, eliminating the need for power, ensuring hassle-free integration
into your setup. Crafted with precision, the DB425 ensures optimal performance by oering a balanced XLR
output. Seamlessly toggle between instrument and line modes with the dedicated switch, adding versatility
to your audio connections. The built-in ground lift switch further enhances your audio delity by mitigating
unwanted ground loop interference and hum. Designed to exceed the most stringent standards, the DB425
DI guarantees longevity and dependable service. Its rugged build and meticulous engineering make it the
perfect impedance matching solution, facilitating the connection of unbalanced signals to balanced systems
eortlessly. Elevate your audio experience with the DB425 – where quality and reliability converge.
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