Balanced Line Driver

The RF-BLD is a 2-channel line driver that boosts low source unit signals or drives amplifiers located a long distance to the back of a vehicle. The BLD features Single Ended or Balanced Differential mode to eliminate noise.

  • 2 channel inputs/outputs
  • Low output impedance
  • Selectable 'Balanced Differential' or 'Single Ended' inputs and outputs
  • High voltage line driver
  • Output level indicators
  • Speaker level to RCA line level converter
  • Low distortion, low noise operation
  • 1 Year Standard Warranty warranty info


If your source unit has low output voltage or your amplifiers are located far back in a Van or SUV, the BLD is a perfect for your system. Featuring Balanced Differential or Single Ended mode, its high voltage output combined with a low output impedance will drive large arrays of amplifiers without breaking a sweat. In Balanced Differential mode, it’s twisted pair design also helps eliminate radiated noise through electrical cancellation.
Low Output Impedance

Low Output Impedance

Ability of a processor to drive a noise free signal to an amplifier or large array of amplifiers.
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Differential Inputs

Differential Inputs

Differential inputs eliminate noise picked up by signal cables resulting in clean signal transfer.
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Balanced/Unbalanced Signal Output

Balanced/Unbalanced Signal Output

The Balanced and Unbalanced mode allows the output signal to properly match the input of the...
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Processor Type: Line Driver
Operating Voltage: 9-16 VDC
Frequency Response: 20Hz - 50kHz ±1dB
Input Impedance: 20k Ohms
Output Impedance: 55 Ohms
Signal Input: High-Level: 2-channel (left/right)
Low-Level: (2) RCA (left/right)
Signal Output: Low-Level: (2) RCA (left/right)
Input Voltage: 650mV to 10.5V RMS
Output Voltage: 11 Vrms Unbalanced
22 Vrms Balanced
Gain: +0.8dB to +24dB
THD+N: 0.01%
Signal-to-Noise: ≥ 90dB @ 2V ('A' Weighted)
≥ 110dB @ 10V ('A' Weighted)
Mounting: Behind Dash (install as close to source unit as possible)
Shipping Weight: 1.1 Lbs.
(0.49 Kg.)
Dimensions (H x W x D): H 1.32" x W 5.90" x D 4.09"
3.35cm x 15.0cm x 10.38cm

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Return Authorization

Contact the Authorized Rockford Fosgate Dealer you purchased this product from. If you need further assistance, call 1-800-669-9899 for Rockford Customer Service. You must obtain an RA# (Return Authorization number) to return any product to Rockford Fosgate. You are responsible for shipment of product to Rockford.

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