B&K REFERENCE-50-S2 7.1 Audio/Video Preamp Processor - DEMO

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Note : Clean like new, accessories included as seen on photos.


  • Motorola 367 Processor - The latest in Motorola technology provides outstanding processing power.
  • 96/24 bit A/D and 192/24 bit capable D/A Conversion - Ultra high reproduction resolution of musical details.
  • Processing modes include DPLIIX, DD, DD SURR EX, DTS, NEO:6 and DTS ES
  • Six coaxial and five optical inputs. Two coaxial outputs (ZA & ZB) and one optical output (ZA).
  • Seven A/V inputs and each with stereo audio, composite video and S-video inputs. One SACD or DVD Audio input (assignable). Balanced and unbalanced 7.1 pre-outputs and three analog (tape) loop outputs.
  • 40 preset memories allow instant system configuration recall of user settings including AM/FM stations.
  • RS-232 Control and IR control - Easy control and interface of your B&K product with other system controllers.
  • Selectable bass management, notch filter, crossover and slope allows for versatility and performance.
  • Upgradeable – Modular design allows for State of the art today, State of the art tomorrow.
  • Two-Zone operation – A complete digital & analog A/V zone (Theater Zone), plus a separate independent A/V analog second zone. Both easily integrate with B&K keypads for control of the main theater zone or the second A/V zone B.


Surround Sound Processing


Frequency Response

5 Hz – 45 kHz

Input Sensitivity

90 mV

Signal To Noise Ratio

89 dB

Input Impedance

50 k Ohms

Output Impedance

221 Ohms

Unbalanced Audio Inputs (RCA)


Balanced Audio Inputs (XLR)

2 Stereo

Digital Inputs Optical / Coax

5 / 6

Digital Outputs Optical / Coa


1/1 Zone A

0/1 Zone B

Unbalanced Surround Outputs (RCA)


Balanced Surround Outputs (XLR)


Analog Audio Outputs

1 Pair

Analog Audio Input 5.1


Number of Zones


Internal Tuner


User Presets



Freq. Response Composite / S-Video

20 Hz-10 MHz

Freq. Response Component Video

10 Hz-100 MHz

Buffered Input / Output Impedance

75 Ohms

Composite Video Inputs / Outputs

7 / 5

S-Video Inputs / Outputs

7 / 5

Component Video Inputs / Outputs

3 / 1

Max. Input Level

2 V P-P

Max. Output Level RCA & S-Video

2 V P-P

Composite to S-Video Video Convergence


Composite to Component Video Convergence


S-Video to Composite Video Convergence


S-Video to Component Video Convergence


Dimensions in Inches
(Cutout Dimensions)

17 (17 1/8) W
5 13/16 (5 15/16) H
13 3/8 (14 1/2) D

Shipping Weight

20 lbs.


FM Section

Frequency Range

87.5 – 107.9 MHz

Total Harmonic Distortion

Less than 0.25%

Frequency Response

20 Hz – 15 kHz

Capture Ratio

2 dB

IHF (Usable) Sensitivity

12 dBf

Mono / Stereo Sensitivity

15 / 35 dBf

Alternate Channel Selectivity

65 dB

Signal To Noise Ratio

70 dB

Antenna Input Impedance

75 §Ù

AM Section

Frequency Range

520 – 1670 kHz

Total Harmonic Distortion

Less than 0.3%

IHF (Usable) Sensitivity

28 dBf

Alternate Channel Selectivity

30 dB

Antenna Input Impedance

300 Ohms


Shipping Weight 20 lbs

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