Stereo preamp for tone control. Allows independent adjustment of balance, volume, bass and treble. Its principal feature is its quality, with THD never rising about 0.3.
Preamplifiers for high or low impedance microphones. According to the model, can amplify a signal coming from a high or low impedance microphone. Allows gain adjustment via potentiometer insert in the circuit.
Preamplifier with electret microphone included in printed circuit. With a line output signal level it is the logical solution to put sound into any musical device with aux input, such as musical sets, mixing tables, small transmitters, etc.
Mono preamp for tone control. Allows independent adjustment of treble and bass coming from a mono signal. The adjustment is done with a Bandaxall type circuit corrector.
Mono preamplifier for electric guitar. Amplifies a signal coming from an electric guitar to later attack a power amp. Allows gain adjustment via potentiometer insert in the circuit.
Signal preamp with constant output level. Maintains the desired output level even if the input level increases or decreases. Suitable for transmitters, sound equipment, etc.
