Radial Eng Pro J-Iso

Availability: Available Unavailable

Product Type: Pro Audio

Product Vendor: Radial

Product SKU: RAD-R800 1025

Overview Stereo +4dB to -10dB converters and isolatorThe Radial J-Iso™ and Pro-Iso™ are stereo line isolators designed to convert a professional +4dB line level balanced signal to an unbalanced -10dB consumer level device. This enables you to take the balanced...

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ATTENTION! TARIFFS AND INDUSTRY IMPACT: All Pricing is subject to change without notice due to industry wide Tariff increases with several major manufacturers. Please check with your sales rep for current and updated pricing information prior to ordering. Quotes are only valid for the day they are provided. Returns for credit - New product may be approved to be returned for credit within 30 days of original packaging. Product must be new, unopened and in original packaging Returns and canceled orders are subject to a 25% restocking fee. -MANY ITEMS ARE CURRENTLY ON BACKORDER. PLEASE VERIFY PRICING AND AVAILABILITY ON ALL PRODUCTS WITH YOUR SALES REP VIA CHAT, EMAIL, OR PHONE BEFORE PLACING AN ORDER

Product Details


Stereo +4dB to -10dB converters and isolator
The Radial J-Iso™ and Pro-Iso™ are stereo line isolators designed to convert a professional +4dB line level balanced signal to an unbalanced -10dB consumer level device. This enables you to take the balanced output of a mixer and feed a consumer level recorder or audio input on a computer.


  • Converts balanced line level signals to unbalanced
  • Stereo signal path with set & forget level control
  • Transformer isolated to eliminate hum & buzz
  • Features Jensen transformers for optimal signal path

Exceptional signal handling
The passive design begins with 100% discrete components throughout. A set & forget level control lets you attenuate the input signal to prevent it from overloading the destination device. Output connections include a stereo pair of ¼" connectors, a set of RCAs and a mini 3.5mm (1/8") for interfacing to a mini recorder or lap-top computer. Transformer isolation helps eliminate hum and buzz caused by ground loops while eliminating stray DC currents from flowing. Construction begins with 14 gauge steel throughout utilizing Radial's unique bookend construction. This creates a protective zone around the connectors and controls for added durability. The steel construction also assists by shielding the transformers from outside magnetic fields. Inside, the J-Iso features an innovative I-beam skeletal insert that makes it virtually impossible to torque the PC board. This reduces potential stress which could cause premature solder joint failure.

J-Iso Applications

Using the J-Iso to record a performance
Often, the available output on a professional console is balanced +4dB. This makes it difficult to feed a portable recorder. The J-Iso comes to the rescue with a simple interface and all of the connectivity you need.

Using the J-Iso to convert a balanced signal
The J-Iso makes it easy to convert the balanced line level output from a preamp to a CD player or other consumer device. Transformer isolation further benefits by eliminating hum and buzz caused by ground loops.

Using the J-Iso to feed a computer
Computers are noisy at the best of times! The Radial J-Iso's premium Jensen transformers help eliminate buzz and hum while delivering exceptional audio. Adjust the set & forget level control on the J-Iso to set signal level.


Audio circuit type: Passive, transformer based
Transformer: Jensen JT-11-YMPC
Number of channels: Stereo (dual mono)
Frequency response: 20Hz ~ 20KHz (+0dB/ -1.5dB)
Dynamic range: 130dB
Total harmonic distortion: 0.001% @ 1kHz
Phase Deviation: 0.5° @ 100Hz; 1° @ 20Hz
Input Impedance: 1.3k Ohms, balanced
Output Impedance: 200 Ohms, unbalanced (when output control is set to max)
Common Mode Rejection Ratio: -58dB
Maximum Input: +20dBu @ 1kHz/1% THD+N
Ground lift, Level Control
Input Connectors: XLR
Output Connectors: 1/4", RCA and 3.5mm TRS unbalanced
Construction: 14 gauge steel chassis
Size (L x W x D): 8.4cm x 12.7cm x 4.8cm (3.3" x 5" x 2")
Weight: 0.7 kg (1.55 lbs)
Shipping size (L x W x D): 10.2cm x 7.6cm x 16.5cm (4" x 3" x 6.5")
Shipping weight: 0.87 kg (1.92 lbs)
Power: Passive, no power required
Conditions: For use in dry locations only between 5°C and 40°C
Warranty: Radial 3-year, transferable

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