D
2
O Stereo
Low noise microphone preamp
USER GUIDE
D
2
O Stereo
Low noise microphone preamp
USER GUIDE
D
2
O Stereo
GENERAL DESCRIPTION
Philosophy D
2
O is a low noise, discrete, stereo
microphone preamp, It is a further development of the
famous German V series preamps of the 40's and 50's,
widely recognized as one of the best sounding preamps.
Operation To avoid unwanted noises please consider the
following rules of use:
Switch of phantom power before disconneting the microphone.
Turn down the gain before switching on phantom power.
When connecting D
2
O to a channel/device with phantom power,
make sure phantom power is turned off on the recieving
channel/device.
In case the clipping indicator lights up, use the supplied Airhead
attenuator, it plugs in between microphone and preamp.
Layout
Front
Back
USER GUIDE
Features
Microphone input + DI input
Switcheable transfomer ratio / input impedance (Hi-Lo)
Switcheable all jFet / Jfet-Tube signal path
Stepped attenuator
Lundahl 1571 microphone input transformer
Phase reverse switch
Phantom power
Overload indicator
Specifications
Gain: Fet: 70dB / Tube-Fet: 60 dB / DI: 20 - 30dB
EIN: -127dB
Headroom: 31 dB
Input impedance: 2,25KOhm / 6.25KOhm / DI-1MOhm
Output impedance 100 Ohm
H/W/D: 44mm, 19”, 165mm
AC-In: 110Vac / 220Vac
D
2
O Stereo
GENERAL DESCRIPTION
Philosophy D
2
O is a low noise, discrete, stereo
microphone preamp, It is a further development of the
famous German V series preamps of the 40's and 50's,
widely recognized as one of the best sounding preamps.
Operation To avoid unwanted noises please consider the
following rules of use:
Switch of phantom power before disconneting the microphone.
Turn down the gain before switching on phantom power.
When connecting D
2
O to a channel/device with phantom power,
make sure phantom power is turned off on the recieving
channel/device.
In case the clipping indicator lights up, use the supplied Airhead
attenuator, it plugs in between microphone and preamp.
Layout
Front
Back
USER GUIDE
Features
Microphone input + DI input
Switcheable transfomer ratio / input impedance (Hi-Lo)
Switcheable all jFet / Jfet-Tube signal path
Stepped attenuator
Lundahl 1571 microphone input transformer
Phase reverse switch
Phantom power
Overload indicator
Specifications
Gain: Fet: 70dB / Tube-Fet: 60 dB / DI: 20 - 30dB
EIN: -127dB
Headroom: 31 dB
Input impedance: 2,25KOhm / 6.25KOhm / DI-1MOhm
Output impedance 100 Ohm
H/W/D: 44mm, 19”, 165mm
AC-In: 110Vac / 220Vac
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