Model: 426A14

$650.00 USD
(Pricing valid in US only)


Patented preamplifier phantom powered 48 V for prepolarized microphones, XLR conn

  • Nominal Microphone Diameter: 1/4" or 1/2"
  • Temperature Range: -40 to +149 °F (-40 to +65 °C)
  • Output Voltage: ±10 Vpk
  • Size - Length: 6.50 in (165.1 mm)

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Nominal Microphone Diameter1/4" or 1/2"1/4" or 1/2" 
Gain-0.2 dB-0.2 dB[1][2] 
Frequency Response (±0.1 dB) (re 1 kHz)11 to 100000 Hz11 to 100000 Hz 
Frequency Response (-3 dB) (re 1 kHz)<1.8 Hz<1.8 Hz 
Electrical Noise (A-weight)<2 µV<2 µV[2] 
Electrical Noise (A-weight)1.5 µV1.5 µV[1][2] 
Electrical Noise (Flat 20 Hz to 20 kHz)<4.5 µV<4.5 µV[2] 
Electrical Noise (Flat 20 Hz to 20 kHz)3.5 µV3.5 µV[1][2] 
Distortion (3 V rms input at 1 kHz)<-70 dB<-70 dB[1] 
Output Slew Rate11 V/µS11 V/µS[1] 
Temperature Range (Operating)-40 to +149 °F-40 to +65 °C 
Temperature Response<0.05 dB<0.05 dB 
Humidity Range (Non-Condensing)0 to 95 %RH0 to 95 %RH 
Humidity Sensitivity<0.05 dB<0.05 dB 
Current Draw6.5 mA6.5 mA[1] 
Impedance (Input)20 GOhm20 GOhm[1] 
Capacitance (Input)0.25 pF0.25 pF[1] 
Impedance (Output)<50 Ohm<50 Ohm 
Output Voltage±10 Vpk±10 Vpk[1] 
Housing MaterialStainless SteelStainless Steel 
Size - Diameter0.79 in20.1 mm 
Size - Length6.50 in165.1 mm 
Weight6.23 oz176.5 gm[1] 
Electrical Connector3-Pin XLR3-Pin XLR 
Mounting Thread (Microphone to Preamplifier)0.2244 - 60 UNS0.2244 - 60 UNS 

All specifications are at room temperature unless otherwise specified.


Product Notes
[1] Typical.
[2] Measured with an 18 pF reference microphone.
[3] See PCB Declaration of Conformance PS147 for details.
079A49Phantom power preamplifier holder(1)
64443-01Quarter inch adaptor(1)
64444-01Half inch to quarter inch adaptor(1)
ERC-16Calibration of microphone preamplifier(1)
Optional Versions:
No optional versions
Product Documents
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