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Telefunken Elektroakustik U48
Tube Condenser Microphone with Switchable Cardioid & Figure-8 Polar Patterns

OUR PART #:  U48

10 years after the development of the ubiquitous U47, the U48 was released with one variation to the U47; it had "bidirectional" (figure 8) capability.
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Telefunken Elektroakustik U48
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10 years after the development of the ubiquitous U47, the U48 was released with one variation to the U47; it had "bidirectional" (figure 8) capability. The bidirectional capability can be very useful in more "ambient" recording environments where the engineer recording the sound does not want to hear as much of the room ambience as might be recorded with an omnidirectional or cardioid pick-up pattern.

According to the book Recording The Beatles, the U48 was one of George Martin's favorite microphones when actually "recording The Beatles". Utilizing the same M7 capsule, BV8 output transformer and VF14K vacuum tube as TELEFUNKEN’s historic reissue of the U47, the U48s authoritative mid-range and extended low-end response make the microphone an excellent tool for recording vocals and acoustic instruments, both near and far.


  • M940 Power Supply
  • M840 25 ft. Dual-Shielded ACX-7 Tube Microphone Cable
  • M740 Elastic Shock Mount
  • FC40 Locking Flight Case
  • WB40 Wooden Microphone Box

TELEFUNKEN Elektroakustik U48 Specifications:

  • Type:  Condenser Pressure Gradient
  • Capsule:  M7
  • Frequency Range:  20 Hz - 20 kHz
  • Polar Pattern:  Cardioid & Figure-8
  • Sensitivity:  24.5 mV/pa +/- 1 dB
  • THD @ 1 kHz at 1Pa:  <0.3%
  • Output Impedance:  <400 ohms
  • Maximum SPL:  127dB
  • S/N Ratio:  85dBA
  • Self Noise:  9.5dBa +/- 1dB
  • Tube Type:  VF-14K
  • Power Type:  Dedicated American-made power supply with slow-ramping filament voltage
  • Dimensions:  9 3/4" (248mm) length x 2 1/4"(57mm) diameter
  • Weight:  22oz (624g)
  • Supply Current:  <45mA
  • Connected Via:  Large Tuchel/Historic stand mount swivel, XLR-3 (M) output
  • Supplied Accessories:
    • Locking Flight Case
    • Power Supply
    • Wooden Mic Box
    • Clasping Shock Mount
    • 25' Accusound Quad-Shielded Cable with Swivel Connector

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