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Radio Design Labs FP-BUC2 Balanced to Unbalanced Converter - 2 Channel

  • Lifetime Tech Support
  • Best Seller!
  • Q & A
  • Product Highlights
  • Stereo Balanced to Unbalanced Audio
  • Connectorized Audio Converter
  • Output Level Trim
  • Low-Noise & Low-Distortion
  • Flat-Pak Convenience
Power Supply
Retail Price: $241.87 Instant Savings: -$66.01 You Pay: $175.86 QTY
  • Lifetime Tech Support
  • Best Seller!
  • Q & A
  • Product Highlights
  • Stereo Balanced to Unbalanced Audio
  • Connectorized Audio Converter
  • Output Level Trim
  • Low-Noise & Low-Distortion
  • Flat-Pak Convenience

Balanced to Unbalanced Converter - 2 Channel


The FP-BUC2 is the ideal choice for connectorized conversion from balanced to unbalanced audio. This module features two identical active (transformerless) channels. Gold contact XLR jacks are utilized for the balanced input channels. Each output is unbalanced, connected through a gold-plated phono jack. A level trim potentiometer is provided for each channel.

The FP-BUC2 circuitry features low-noise, low-distortion and excellent headroom and crosstalk performance and the superior audio clarity for which RDL products are known. The FP-BUC2's low profile and compact size permit mounting in confined spaces and in various locations in equipment racks.


  • Stereo Balanced to Unbalanced Audio Conversion
  • Connectorized Audio Converter
  • Output Level Trim
  • Low-Noise and Low-Distortion Conversion
  • Cabinet, Shelf or Rack Mounting
  • Convenience of RDL FLAT-PAKs


  • Amps per FP-BUC2: 2 identical circuits (stereo or dual mono operation)
  • Gain: +/- 6 dB (adjustable relative to −10 dBV output for +4 dBu input); (separate controls for each channel)
  • Input Level: −2 dBu to +10 dBu (for -10 dBV output)
  • Input Impedance: 20 kΩ
  • Input Configuration: Balanced bridging
  • Output Level: -10 dBV
  • Output Impedance: 75 Ω (drives 600 Ω or 10 kΩ unbalanced lines)
  • Output Configuration: Unbalanced
  • Frequency Response: 10 Hz to 40 kHz (+/- 0.1 dB)
  • THD+N: < 0.005% (10 Hz to 40 kHz)
  • IMD: < 0.005%
  • Headroom: > 18 dB (at rated output level of -10 dBV)
  • Noise: < -90 dB (referred to -10 dBV, 20 Hz to 20 kHz)
  • Typ. −95 dB (rel. −10 dBV, "A-Weighted")
  • CMRR: > 50 dB (20 Hz to 5 kHz)
  • Crosstalk: Better than -90 dB (20 Hz to 20 kHz)
  • Power Requirement: GROUND-REFERENCED, 24 Vdc @ 50 mA
  • Dimensions:
  • Height: 1.29 in. 3.28 cm
  • Width: 3.25 in. 8.26 cm
  • Length: 4.07 in. 10.34 cm
  • Ambient Operating Environment: 0 C to 55 C


Q & A

Radio Design Labs
MFR Part Number
Product Category
Format Converters, Cable Adapters & Converters
Unit of Measure
Shipping Weight
0.74 lbs.
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