The DoubleDiffAmp is a simple guitar preamp built around a low-noise op-amp that operates in a differential amplifier configuration. It is a two-channel version of the DiffAmp preamplifier - one preamplifier can handle two pickups.

The DoubleDiffAmp plugs directly into the humbucker pickup. With this configuration, the DoubleDiffAmp amplifies the differential signal from the pickup's coils and at the same time suppresses the common signal (hum).

Features:

  >  Preamp is analog design,
  >  Low noise op-amp on board,
  >  Handmade, high quality, each preamp tested,
  >  Power: 9V battery (the battery is not included),
  >  Differential Gain: 24dB,
  >  Low current consumption: <150uA,
  >  High input impedance,
  >  Low noise,

  >  Two-channel preamp,

  >  Works with typical passive humbuckers,

  >  Small size: 33 x 25 x 5 mm
  >  Easy installation on guitar,
  >  Included: manual, battery connector, 6.3mm stereo jack (socket),
  >  Ability to work with other instruments than guitars.

PRICE: 40 EUR