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Radial Engineering Pro-ISO +4/-10 dB Stereo Line Isolator

B&H # RAPROISO Mfr # R800 1150
Usually ships in 7-14 business days

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This is a special order item and is non-cancelable and non-returnable. Est. arrival at B&H is 7-14 business days (subject to availability). Your order will be charged at time of shipment.

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You Pay: $139.99

The Pro-ISO +4/-10 dB Stereo Line Isolator from Radial Engineering is a stereo line isolator designed to convert a professional +4 dB line-level balanced signal to an unbalanced -10 dB 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.

The Pro-ISO employs a transformer that focuses the energy in the voice range making it a suitable choice for sermons, news gatherings, and spoken voice.

The passive design begins with 100% discrete components throughout. A set-and-forget level control lets you attenuate the input signal to prevent it from overloading the destination device. Output connections include a stereo pair of 1/4" connectors, a set of RCAs and a mini 3.5mm (1/8") for interfacing to a mini recorder or laptop computer. Transformer isolation helps eliminate hum and buzz caused by ground loops while eliminating stray DC currents from flowing.

Utilizing Radial's bookend construction, the Pro-ISO has 14-gauge steel construction throughout. 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.

Converts balanced line level signals to unbalanced
Stereo signal path with set & forget level control
Transformer isolated to eliminate hum & buzz
Circuit Type Passive, transformer based
Number of Channels Stereo (dual mono)
Frequency Response 20 Hz to 18 kHz (+0 dB/ -3 dB)
Dynamic Range 130 dB
Maximum Input +20 dBu @ 1 kHz / 1% THD+N
THD + Noise 0.005% @ 1 kHz
Deviation Phase: 1.5° @ 100 Hz; 3° @ 20 Hz
CMRR -76 dB
Input Impedance 1.3 kΩ, unbalanced
Output Impedance 1.9 kΩ, balanced
Transformer Radial transformer
Ground Lift Disconnects XLR pin-1 at XLR input
XLR Configuration AES standard (pin-2 hot)
Connectors Balanced XLR-F in; 1/4", RCA and 3.5 mm TRS unbalanced outputs
Construction 14-gauge steel chassis
Finish Baked enamel
Power Passive, no power required
Dimensions (L x W x D) 3.3 x 5.0 x 2.0" (83.8 x 127.0 x 50.8 mm)
Weight 24.8 oz (703.1 g)
Radial Engineering Pro-ISO +4/-10 dB Stereo Line Isolator
  • Limited 3-Year Transferable Warranty
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