Preamplifiers & Audio Processing

Five-Channel Tone Control (Equalizer) - HK1026

The device is a five-channel passive tone control (equalizer) designed for adjusting the frequency response of an audio signal. The circuit is implemented using two transistors and passive RC filters...

2.15 € (4.21 ЛВ.)

Stereo Preamplifier with Single-Supply Power - HK1027

The device is a stereo preamplifier implemented using a TL082 operational amplifier (also marked as B082), operating with a single-supply power source. It is designed to amplify low-level audio signal..

1.94 € (3.79 ЛВ.)

Stereo Mixer - HK1028

The circuit represents a stereo audio mixer designed to mix up to four input signals. Inputs are provided for a tape deck, tuner, turntable and microphone, with each input adjustable according to the ..

5.01 € (9.80 ЛВ.)

Microphone Preamplifier - HK1035

This device is a transistor-based microphone preamplifier designed for use with an electret microphone connected directly to the circuit input. The preamplifier increases the microphone signal level t..

1.51 € (2.95 ЛВ.)

Transistor Stereo Tone Control - HK1036

This transistor-based stereo tone control allows both boosting and attenuation of low and high audio frequencies, unlike passive tone control circuits which provide attenuation only. The circuit enab..

2.05 € (4.01 ЛВ.)

Stereo Preamplifier with Tone Control - HK1037

This stereo preamplifier with active tone control is easy to build while providing very good Hi-Fi class performance. The circuit allows independent boosting and attenuation of low and high frequencie..

2.35 € (4.60 ЛВ.)

Two-Station Intercom - HK1070

The intercom is based on the LM386 integrated circuit, which operates as a low-frequency audio amplifier and amplifies the signal from an electret microphone. The device enables two-way voice communic..

6.54 € (12.79 ЛВ.)

Microphone Preamplifier - HK1535

This device is a transistor-based microphone preamplifier designed for use with an electret microphone connected directly to the circuit input. The preamplifier increases the microphone signal level t..

1.84 € (3.60 ЛВ.)