SYREN features a dual gain stage circuit and allows overdrive effects.
A switch selectable HI-z input is included. The low cut filter is at 90 Hz and is 24 db/ octave. The pad has
-15 db and -25 db settings to allow a wide input range of signals.
The audio path color is changed by modifying the second stage tube circuit so it has negative feedback or does not have negative feedback. This changes the interaction between the tube stages and thus the sound of the pre-amp. With negative feedback it is a more accurate audio path with wider frequency response and without negative feedback it has a more open warmer sound.
Pad: 0, -15, -25 dB steps
Max Gain: 65 dB
Filter: 90 Hz 24 dB/oct
Power: 100mA with self reseting fuses
At 40 dB of gain, 0 dBU output and a 150 Ohm Source
Harmonic Distortion: 0.5% second harmonic
Noise: -84 dBU
Frequency Response: 6 Hz to 80 kHz
Tube: 12AX7B, selected for low microphonics
Lundahl Mu metal shielded transformers for both input and output