6 channel preamp tube DIY.
Modular construction in Europe 3U rack, each channel being removable.
Max gain of 60dB, -24 dB pad.
Phase, Pad and Phantom front, rotator gain potentiometer output level.
Connectors I / O XLR.
Addition of a possible tool jack.
As indicated above: phase, and Pad Phantom top front, below rotator gain potentiometer output level of the bottom panel.
Nothing is easier to use.
It is a tube preamp, input and output transformer, so it colors the sound and that's the goal.
It has a vibrant, incredible punch,
The amplification tubes gives a nice pleasant saturation when rubs its limits.
Bandwidth is mitigated gently in the grave below 50Hz but there is still signal 5Hz!
Gain, PAD, Phase, and 48V output for preamp vloume
The preamp provides color, and fortunately, this is what is wanted!
This is a DIY project with Berl (AF members cf).
This is a 6-channel preamp tube with mount push-pull amplification.
The basis of reflection was the Gyraf G9 which is a 2-way initially, it was therefore modified and even improved!
The choice of lamps and input-output transformers takes precedence over sound quality, and changed at will (since it is the DIY).
The rendering is amazing quality, good headroom, a very advanced design on the place of components to optimize the path of the sound signal, Berl experience has been a great help.
I did the design of the facade, and it is a pleasure to use a machine design to her taste
In use, the preamp is super stable, the lamp technology coupled with modern supply (switching) is a success. Sessions several days with 6 channels simultaneously ... nothing flinch!