CT101 Linear Preamplifier Module

CT101 Linear Preamplifier Module

CT101 Linear Preamplifier Module, stereo

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CT101 is a linear 2-channel widebanded audio buffer / preamplifier. It is built on a compact PCB, which together with the use of SMD components yields a very short signal path.
CT101 is built as two mono preamplifiers on one PCB, and can be power by two individual supplies. The active devices are special ICs, and the power supply connections are decoupled with SMD capacitors.


  • Selectable gain 0, 6 or 12dB
  • Wide power supply voltage range
  • Low supply current
  • Use of special active devices and SMD resistors for low distortion, large bandwidth and superb sound
  • Compact PCB, low inductance, low stray capacitance
  • True dual-mono when using separate power supply for each channel
  • SMD power supply decoupling capacitors
  • Dual supply voltage regulators for each channel
  • All connectors and PCB traces gold plated
  • Drives difficult loads / long cables


  • High performance gain/buffer preamplifier for CD-players, etc.
  • High performance headphone amplifier
  • For upgrading Hi-Fi and A/V audio equipment
  • Reference audio preamplifier
  • Large bandwidth amplifier

Use CT101 to build an active high quality 2-channel audio preamplifier. One of DACT?s stereo CT1 or CT2 stepped attenuators may be solder directly onto the PCB (see the photo on the right) to adjust the volume. This is an almost ideal preamplifier for sources like CD-players. You may add DACT?s CT3 audio input selector switch and/or CT4 balance control to make a preamplifier with more features.
For detailed application information please see the RESOURCES below.



Gain (selectable):

0, 6 or 12 dB

Bandwidth (0dB gain):

25 MHz

Slew rate (0dB gain):

500 V/us

S/N ratio (IHF A):

112 dB

Channel matching:

+/-0.05 dB

Output resistance:



0.0002 %

Output voltage swing:

+/- 14 V

Output current, max.:

>25 mA

Supply voltage range:

+/-5 VDC to +/-100 VDC




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