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Jensen Transformers Iso-Max PI-2XR - 2-Channel Line-Input Isolator (XLR In/RCA Out)

Jensen Transformers Iso-Max PI-2XR - 2-Channel Line-Input Isolator (XLR In/RCA Out)

Special Order
Expected availability: 7-14 business days

Product Highlights

  • Isolates Input of Connected Device
  • 2 x XLR Inputs, 2 x RCA Outputs
  • Two Jensen High-Performance Transformers
  • Eliminates Hum & Buzz from Ground Loops
  • Reduces Electromagnetic Interferences
  • Frequency Response of 5 Hz to 40 kHz
  • Low Distortion Down to 20 Hz
  • Passive Design Requires No Power
  • 8-Position DIP Switch
  • Rugged Steel Enclosure
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Connection Type: XLR In/RCA Out

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Special Order


Channels: 2-Channel

2-Channel Single-Channel

Not available with current selections

This item is noncancelable and nonreturnable

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You Pay: $269.99

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  • 1Description

The Jensen Transformers Iso-Max PI-2XR is a passive, 2-channel line-input isolator which prevents and eliminates hum and buzz by isolating the input of the connected device. It also attenuates electromagnetic interference (EMI) and radio frequency interference (RFI) problems, making it an ideal tool for use in recording studios, broadcast houses or performance venues.

The PI-2XR features a pair of high-performance Jensen transformers with internal Faraday shields, which eliminate ground loops and reduce common-mode noise by as much as 124 dB. An 8-position DIP switch lets you optimize grounding and RF filtering to suit your specific installation needs. The unit delivers a flat frequency-response from 5 Hz to 40 kHz, and can withstand signals in excess of +19 dB at 20 Hz, without discernible distortion.

Easy to set up, with no power required, the PI-2XR comes with a removable screw-down barrier strip for quick installation in NEMA enclosures and 19" racks. It features a pair of gold-plated XLR input connectors and a pair of RCA connectors for applications with unbalanced audio systems. The device is equipped with a rugged, flanged-steel enclosure and is well-suited to stand up to the rigors of live use.

Key Features
  • Passive, two-channel line-input isolator 
  • Isolates the input of the connected device
  • Connects between the source and the input destination to eliminate hum and buzz caused by ground loops
  • Reduces electromagnetic interference (EMI) and radio frequency interference (RFI) problems
  • Two Jensen high-performance transformers with internal Faraday shields improve rejection of high-frequency buzz by a factor of 100 to 1000 (40 dB to 60 dB) over traditional transformers 
  • Ruler-flat frequency-response from 5 Hz to 40 kHz 
  • Handles signals in excess of +19 dB at 20 Hz, without discernible distortion 
  • Rejects noise by as much as 124 dB
  • 8-position DIP switch lets you optimize grounding and RF filtering to suit your specific installation needs
  • Removable, screw-down barrier strip for easy installation in NEMA enclosures and 19” racks
  • Standard, gold-plated 3-pin XLR-female input connectors
  • RCA output connectors for unbalanced systems
  • Rugged, flanged-steel enclosure 
  • Plug-and-play, easy to use, no power required


UPC: 676101042197
In the Box
Jensen Transformers Iso-Max PI-2XR - 2-Channel Line-Input Isolator (XLR In/RCA Out)
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description
    Type Passive line-input isolator
    Channels 2
    Connectors 2 x 3-pin XLR-female, gold-plated, balanced (inputs)
    2 x RCA, unbalanced (outputs)
    Frequency Response 5 Hz to 40 kHz
    Input Impedance Zi, 1 kHz, +4 dBu, test circuit 1
    Minimum: 22.0 kOhms
    Typical: 23.5 kOhms
    Maximum: 25.0 kOhms
    Insertion Loss 1 kHz, +4 dBu, test circuit 1
    Typical: 1.6 dB
    Maximum: 2.0 dB
    Magnitude Response 20 Hz, +4 dBu, test circuit 1, ref 1 kHz
    Minimum: -0.15 dB
    Typical: -0.03 dB
    Maximum: ±0.0 dB

    20 kHz, +4 dBu, test circuit 1, ref 1 kHz
    Minimum: -1.0 dB
    Typical: -0.70 dB
    Maximum: ±0.0 dB
    Deviation from Linear Phase 20 Hz to 20 kHz, +4 dBu, test circuit 1
    Typical: +1.4 / -0°
    Maximum: ±2.0°
    Distortion (THD) 1 kHz, +4 dBu, test circuit 1
    Typical: <0.001%

    20 Hz, +4 dBu, test circuit 1
    Typical: 0.04%
    Maximum: 0.10%
    Maximum Input Level At 20 Hz, 1% THD, test circuit 1
    Minimum: +17 dBu
    Typical: +19 dBu
    Common Mode Rejection Ratio 60 Hz, test circuit 2 / 3
    Typical: 124 dB / 95 dB

    3 kHz, test circuit 2 / 3
    Minimum: 85 dB
    Typical: 95 dB / 85 dB

    (600 Ohms balanced / unbalanced source)
    Output Impedance Zo, 1 kHz, test circuit 1
    Typical: 4.65 kOhms
    Source Impedance Minimum: 0 Ohm
    Typical: 600 Ohms
    Maximum: 2 kOhms

    (Allowable output impedance of device driving the ISO-MAX input)
    Load Impedance Minimum: 10 kOhms
    Typical: 20 kOhms

    (Allowable input impedance of device loading the ISO-MAX output)
    Load Capacitance Minimum: 0 pF
    Typical: 50 pF
    Maximum: 100 pF

    (Allowable cable and input capacitance loading the ISO-MAX output)
    Optimal Cable Length Input
    Typical: 3.3' / 1 m
    Maximum: 9.8' / 3 m
    Temperature Range 32 to 158°F / 0 to 70°C

    (Operation or storage)
    Voltage Difference Maximum: 24 V RMS, 34 V peak

    (Input to output, any input to any output shield or any shield to case, 60 Hz)
    Dimension (L x W x H) 6.94 x 3.50 x 1.71" / 176.30 x 88.90 x 43.40 mm
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