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BishopSound BP44k - 4 Channel Power Amplifier 4000w

Product Code: BP44K

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British design, highest quality components and honest ratings combined with my personal guarantee.

Made in conjunction with makers I have worked with for over 15 years, the BishopSound BP44K is perfect for all of the Bishopsound full-range speakers.

This amplifier works perfectly with my BB115, BB215, BB312 and gives the very best sound quality. I started making my own amps because of the sound quality and reliability of a famous brand from Germany which we no longer sell.

BishopSound provides reliable, high quality, acoustically perfect and cost-effective method of powering our passive speakers. Negating the need to turn to overseas brands who often care more about margin than the customer.

£399.00 incVAT

The BishopSound BP44k includes a number of features to give the best performance for our speakers.

  • 4 x 750 Watts into 8 Ohms - Program Power
  • 4 x 1200 Watts into 4 Ohms - Program Power
  • 2 x 2000 Watts into 8 Ohms Bridged - Program Power
  • Intelligent fans switch in and out dependent on the heat generation automatically to ensure cool running
  • Limiters protect the BP44K from damage by moving to protect mode when THD is more than 0.5%
  • Each of the 4 channels has independent clip, protect and signal indication.
  • Strong 1u rack ears for easy touring rack installation
  • 4 x XLR balanced Neutrik analog audio inputs
  • 4 x NL4 Neutrik speakON output connectors

For more details, help, and advice please email

Frequency response: 20Hz–20kHz (0.5~-1.2dB)
Total harmonic distortion: <0.05%
Signal to noise ratio: >98dB
Damping coefficient: >1000 (100Hz)
Resolution: >70dB
Conversion rate: >20V/μs
Input sensitivity: 1.0V
Input impedance: 10kΩ/20 kΩ
Voltage gain (8Ω) 39dB 40.3dB 42.0dB 43.0dB
Amplifying circuit structure CLASS-D


  • Soft Start
  • DC
  • Short Circuit
  • Overload
  • Distortion limiting
  • Overheating
  • VHF

Connection Input section: Balanced input XLR female socket, balanced and connected XLR male socket

Output section: NL4 type SPEAKON socket

Indicator panel Lights: Power, signal UV, peak clipping,

Front panel function: Power start switch, volume control knob, displays

Rear panel function Stereo, a parallel selection switch

Power supply: Removable standard power plug power cord AC220-240V/50Hz.±10%

Weight 6kg

Product Dimensions 483x250x44

Note: The printing of the RMS ratings on the rear of the amp are incorrect.

Rated Power
RMS Continuous Ratings - 4 x 600w@4Ω - 4 x 400w@8Ω - 2 x 1100w@8Ω Bridged - The Printing on the rear of the amplifier is not correct.
Frequency Response
20Hz - 20KHz
THD at 1kHz
Signal To Noise Ratio
Coefficient of Damping
>1000 (100Hz)
Conversion Rate
≤ 20V/µs
Input Resistance
10K Ω / 10K Ω
Input Sensitivity
25cm x 48.3cm x 4.4cm

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