You have no items in your shopping cart.
Palmer BRIDGE 4A+ – Professional 4-Channel Active DI Box and Line Isolator
Palmer BRIDGE 4A+ is a professional 4-channel active DI box and line isolator in a 19" rack format. Each channel can function as a DI box, line isolator or signal booster, with combo XLR/jack inputs and transformer-balanced XLR outputs. With adjustable gain up to +18 dB and Audio over Cat connectivity, it offers a flexible and reliable solution for stage, studio and installation audio systems.
Product available: 2 pcs
Main warehouse
Stationary shop
30 days refund policy
Safe shopping
Warranty
Free InPost return
EUR435.02
Product attributes
Model :
BRIDGE 4A+
SKU :
SUP_jb984
Warranty :
5 years
Producent :
Palmer
Weight without package:
2.5 kg
Product Description
Details
Palmer BRIDGE 4A+ – Professional 4-Channel Active DI Box and Line Isolator
Palmer BRIDGE 4A+ is a professional active DI box in a 19" rack format (1U), designed for stage, studio, broadcast and installation environments. It combines the functionality of an active DI box, line isolator and signal booster in a single compact device. With four independent channels, it offers maximum flexibility when working with multiple audio sources.
Each channel can operate independently as an active DI box, line isolator or signal booster. Combo inputs support both balanced XLR signals and unbalanced 6.3 mm jack connections, making the unit ideal for guitars, basses, keyboards, synthesizers and other line-level devices.
Transformer-based galvanic isolation effectively eliminates ground loops and unwanted noise, ensuring a clean and stable signal even in demanding live environments. Additionally, every channel features a dedicated Ground Lift switch to quickly remove hum and interference.
The BRIDGE 4A+ also allows boosting the signal level by +6 dB, +12 dB or +18 dB, making it possible to match various signal sources and optimize levels for professional audio systems.
A unique feature is Audio over Cat (AES72), allowing signals from all four channels to be transmitted via a single Cat network cable. This significantly simplifies cabling, reduces setup complexity and speeds up system installation.
Built into a rugged steel 19" rack enclosure (1U), the Palmer BRIDGE 4A+ is designed for reliability in touring rigs, professional studios and permanent AV installations. It is a versatile tool for sound engineers, technicians and system integrators who demand high signal quality and flexible connectivity.
Key features
- Active DI box / line isolator in 19" rack format (1U)
- 4 independent audio channels
- Each channel can operate as DI box, line isolator or signal booster
- Combo XLR / 6.3 mm jack inputs
- Two transformer-balanced XLR outputs per channel
- Galvanic isolation to eliminate ground loops and noise
- Ground Lift switch on each channel
- Selectable gain: +6 dB / +12 dB / +18 dB
- Audio over Cat (AES72) output for multi-channel transmission
- Solid 19" / 1U steel rack enclosure
- Power supply: 9–18 V DC
Applications
The Palmer BRIDGE 4A+ is ideal for live sound systems, recording studios, broadcast setups and AV installations. It ensures reliable, noise-free signal transmission over longer distances while simplifying complex audio routing setups.
Shipment
Product delivery details Palmer BRIDGE 4A+ – Professional 4-Channel Active DI Box and Line Isolator
Shipment from Warsaw, Poland.
Delivery to
If you wish to see more accurate shipping methods available in your location, fill the fields above.
Ask question
Ask question about product
Product faq
Palmer BRIDGE 4A+ – Professional 4-Channel Active DI Box and Line Isolator - Frequently asked questions.
FAQ – Frequently Asked Questions
What is the Palmer BRIDGE 4A+ used for?
It converts unbalanced audio signals to balanced signals, allowing instruments and line-level devices to connect cleanly to mixers, audio interfaces or PA systems.
How many channels does the BRIDGE 4A+ provide?
The device features four independent channels that can operate simultaneously.
Does the device eliminate ground loop noise?
Yes. Transformer isolation and the Ground Lift switch help eliminate ground loops and unwanted hum.
What devices can be connected?
You can connect guitars, basses, keyboards, synthesizers and other line-level audio devices.
What is Audio over Cat?
This feature allows audio signals from all four channels to be transmitted via a single Cat network cable, reducing cabling complexity in professional setups.
About manufacturer Palmer
W 1980 roku w Niemczech powstała marka Palmer, która dziś należy do Adam Hall Group, z siedzibą w Neu-Anspach. Firma od początku koncentruje się na tworzeniu profesjonalnych rozwiązań do zarządzania sygnałem audio, wykorzystywanych zarówno w studiu, jak i na scenie. Dzięki precyzyjnej niemieckiej inżynierii i dbałości o jakość brzmienia, produkty Palmer – takie jak DI-boxy, splittery, loadboxy czy symulatory kolumn – stały się standardem w branży muzycznej. Marka jest ceniona przez realizatorów dźwięku, techników scenicznych i muzyków na całym świecie za niezawodność, solidną konstrukcję oraz transparentność sygnału.
Company
- Manufacturer's headquarters: Germany
- Average product rating: 5.0
Products
- Product count: 75
- Available product count: 68
