Sp3cifications of this preamp:
Circuit: Class A
Tubes: 12AU7
Input Z: 100k ohms
Output Z: 1k ohms
Freq. -3dB 10Hz >1mHz
Gain: 16dB
Phase: Inverts
Recommended Min. Amplifier Input Z: 10kHz
I can also install a high/low gain switch on the front panel. High gain increases gain to about 20dB while lowering output impedance to about 650 ohms. A good match for most solid state amps or any lower gain system.