LE QUARANTE SEPT  is a modular mono microphone preamp in EURORACK format, which is rare for a tube device. You will need a EURORACK rack to receive it, wich allowing to receive up to 8 modules on 3U high.
This preamplifier can give 47dB gain to a low amplitude audio signal: a microphone for example or a musical instrument. It combines the warm sound of the triode with the slightly more “marked” sound of the pentode, for an extraordinary result.
 On the front panel, we have integrated a 6.35 jack DI function for high impedance instrument. The gain of the DI is then 27dB. A 4th attenuator position has been added compared to the original REDD47  gives 47dB of Gain: 0, -6, -12, -18dB. The output volume offers the possibility of saturation of the input with the control of the output level. The power supply regulation circuits of the filament and high voltage voltages on each channel allow the limitation of crosstalk.
 A "Standby" system delays the arrival of high voltage in the two tubes  that compose it: an EF86 pentode and a 6922 double triode.
 The  input and output transformers are Jensen, the diagram respects the pure tradition of the famous preamp used by the Beatles, the REDD47. This preamplifier was designed by Denis Pinchedez, a discreet yet major player in the world of audio in France.
 
 High-end manufacturing: State of the art manufacturing: These modules are assembled by us with high-quality, sorted components.
 
 This product  is also available as a kit. (DIY)
 Kits are shipped with all parts  mechanical  and  electronics necessary for the complete manufacture of the module, as well as a  online documentation facilitating assembly.