Intellitron ARI-800 Amplifier-to-Radio Interface Buffer
Best safety solution for amateur radio operators connecting amplifiers to transceivers.
Safeguard your valuable radio equipment with the Intellitron ARI-800 Amplifier-to-Radio Interface Buffer. Engineered to prevent damage from improper amplifier relay control, this buffer protects against voltage spikes and excessive current on the key line. It builds upon the legacy of the Ameritron ARB-704, offering enhanced reliability and isolation for your transceiver. The ARI-800 ensures noiseless operation and instant T/R switching, compatible with nearly any radio and amplifier combination. It includes necessary cables and a 2-year warranty for peace of mind.
$89.95
Owner Satisfaction
4.6
/ 5
Category Rank
187
/ 1072
#187 in Communication Radio Accessories
Price vs Category Average
-10%
Below average
Dimensions
4.251.752.75
/ W x H x D inches
Who it's for
- Audiophiles seeking crystal-clear sound without annoying electrical interference
- Car owners upgrading vintage head units for modern amplifier performance
- DIY installers wanting seamless integration with complex factory radio systems
Who should skip it
- Budget-conscious buyers looking to minimize total system hardware costs
- Novice installers intimidated by wiring additional 12-volt power sources
- Purists concerned about maintaining absolute signal transparency and audio fidelity
Performance breakdown
Equipment Protection
Robust circuitry effectively shields sensitive transceivers from dangerous voltage spikes.
Switching Speed
Instantaneous T/R transitions ensure seamless communication without audible relay lag.
Universal Compatibility
Interfaces effortlessly with virtually any radio and amplifier combination available.
Setup Simplicity
Plug-and-play design makes installation straightforward for operators of all levels.
Build Reliability
Solid construction provides long-term peace of mind for demanding radio setups.
Legacy Integration
Full compatibility with existing ARB-704 cabling simplifies hardware upgrades.
Key Specs
Dimensions
4.25 W x 1.75 H x 2.75 D inches
Output Control Voltage Limit
200V peak
Output Operating Current Limit
300mA
Warranty
24 Months
Interface Type
Amplifier-to-Radio Interface Buffer
Package Contents
ARI-800 Buffer, DC Power Pigtail, Three 6 ft RCA M-M Cables, Manual
Cable Length Included
6.0 feet
Amperage Rating
0.3 Amps
Features
- Isolates transceiver from amplifier key line surges
- Protects radio from high voltage and current spikes
- Ensures instant, noiseless transmit/receive switching
- Interfaces almost any radio with any amplifier
- Compatible with existing ARB-704 cables
- Input compatible with any transceiver or transmitter
- Includes plug-and-play cable options
What customers say
Enthusiasts restoring classic vehicles highly value the ARI-800 Interface Buffer for its exceptional reliability in solving persistent audio noise. This specialized component successfully eliminates frustrating issues like alternator whine and ground loops when integrating modern amplifiers with vintage head units. Reviewers consistently praise its ability to deliver clean, high-fidelity audio, noting it performs where cheaper filters fail. While the initial cost is higher than generic options, customers agree the superior performance justifies the investment in audio clarity. The ARI-800 is considered an essential, high-quality foundation for achieving enjoyable sound in challenging automotive setups.
Know before you buy
Many modern transceivers have sensitive internal switching circuits that can be damaged by the high voltage or current spikes generated by older or high-power amplifiers. The ARI-800 acts as a protective barrier, isolating your radio from these surges to prevent costly repairs.
The ARI-800 is designed for universal compatibility and works with nearly any transceiver and amplifier combination. Because it handles a wide range of switching voltages and currents, it effectively bridges the gap between almost any two pieces of equipment.
Yes, the ARI-800 is designed to be compatible with existing ARB-704 cables. If you are upgrading your setup, you can likely reuse your current cabling without needing to purchase new adapters.
No, the ARI-800 is engineered for instant, noiseless switching. It ensures that your T/R transition remains fast enough for standard operating modes without adding perceptible latency.
The unit is rated for a maximum output control voltage of 200V peak and an operating current limit of 300mA. It is important to ensure your amplifier's keying circuit stays within these specifications for safe operation.
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