Rolls DB425 Users Guide

The DB425 employs an exclusive, specially
crafted audio transformer to transform sig­nals 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.

What's in the box?

1 - Made in USA DB425

DB425 4 Channel DI

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

1 - This owners manual

Rolls Corporation
Salt Lake City, UT
8/23

- Home

- Studio

- Broadcast
... Anywhere you need a professional 4 Ch. direct interface.

Connection guide

Channels 1 - 4 are identical in operation and features

LIFT

GND

DB425

OUTPUT 4

LIFT

GND

OUTPUT 3

LIFT

GND

OUTPUT 2

LIFT

GND

OUTPUT 1

XLR balanced output

for connection to any

XLR mic input on a
PA, mixer board or

other device.

Ground - Lift switch

for each output XLR.

OUTPUT 4

DB425

INPUTS 1

GND

LIFT

DB425

INST

LINE

GND

LIFT

OUTPUT 3

INST

LINE

INPUTS 2

Switch to select input
level. Instrument or
line level.

OUTPUT 2

INPUTS 3

GND

LIFT

INST

LINE

GND

LIFT

OUTPUT 1

INST

LINE

INPUTS 4

Dual 1/4” inputs. These inputs
are converted to mono so any
stereo input will work along
with any mono signal.

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 cus­tom 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.