Module with two OPA627 amplifiers

Zeenko ZK05-UM is a wideband low-noise amplifier with high gain and excellent linearity, operating in the 100 kHz – 6 GHz band. Powered via USB-C, it offers a low noise level and high overload resistance, making it a suitable choice for RF applications, antenna systems, and the input stages of spectrum analyzers.

The board has a class D amplifier onboard that can drive 2 channels of 4-8 ohm impedance speakers at 20W each. Adafruit 1752

Zeenko ZK07-BM is a low-noise, wideband amplifier with very high gain, powered by a battery and intended for operation in the 30 MHz – 6 GHz band. Ideal for compensating losses in long antenna lines, it provides up to 43 dB of gain and very good noise performance. Recommended for installation as close to the antenna as possible in receiving and measurement paths.

Class D mono digital audio amplifier module PAM8302. The system allows you to connect one loudspeaker with an impedance from 4 to 8 Ω and a power of 2.5 W

SJ2038 digital stereo audio amplifier module. The system allows you to connect two speakers with an impedance from 4 to 8 Ω and a power of 3.5 W

Module with LM386 audio amplifier and loudspeaker. The board is equipped with a Grove connector and is controlled by a PWM signal. Seeed Studio 107020001

Zeenko ZK06-UM is a precise, wideband RF amplifier for the 10 MHz – 6 GHz range, designed for high-sensitivity measurements with low interference. Powered via USB-C and optimized for use with devices such as the tinySA ULTRA, it offers high linearity and a low noise figure across the entire supported band.

Class D digital audio amplifier with Bluetooth module. It has two channels with a power of 50 W and can work with speakers from 4 to 8 Ω. It is powered with the voltage in the range from 9 to 24 V. NS-01G

Audio preamplifier module based on RC filters. Equipped with potentiometers to adjust bass, treble and volume level

Audio preamplifier based on the NE5532 chip. Powered with DC voltage in the range from 9 to 35 V (does not require symmetrical voltage)

Stereo audio amplifier with Bluetooth 5.0 communication. It can be powered with the voltage from 9 to 24 V and has two outputs with a power of 50 W. Assembly kit. ZK-502C

Class D digital audio amplifier with Bluetooth module. It has two channels with a power of 50 W and can work with speakers from 4 to 8 Ω. It is powered with the voltage in the range from 9 to 24 V. NS-01G

Class D digital audio amplifier. It has two channels with a power of 450 W and can be used with 8 Ω speakers. Powered by AC voltage 2x30V

Audio amplifier based on the TPA3116 chip with a power of 100 W with an active low-pass filter. Dedicated to the bass column (subwoofer)

Class D digital audio amplifier with Bluetooth 5.0 module. It has two channels with a power of 300 W and can work with 4 Ω speakers. Powered by alternating voltage 230 V

Audio amplifier module with three output channels. It can be powered from 12 to 24 V and has two 50 W outputs (left and right) and one 100 W output (bass). Equipped with Bluetooth 5.0 communication