BH-30. BT wireless audio speaker
This BH-30 active Bluetooth portable audio speakers are newest designed by our Vistron Audio.It is a bi-amp powered speaker with 2*30W RMS and use compact desktop design, which is actually called "Small body, large sound"!
DSP-250BT--Wireless BT HIHI Power amplifier
DSP-250BT 2.1 channels bluetooth power amplifier,built-in Bluetooth V4.2 HIFI Stereo transmission.This bluetooth stereo power amplifier is the perfect solution for all of your home or office audio needs. Using the latest sound amplification technology, this device is designed to perform and deliver clear and accurate sound. It allows you to connect audio sources not only by audio cables anymore
Preamp-01-- Stereo pre amplifier
A preamplifier (pre-amplifier) is an electronic amplifier that preparing a small electrical audio signal for further amplification or processing. It is used to drive the cable to the main instrument without significantly degrading SNR. Mainly the Preamplifier purpose switching between different line level source and applying a volume control , then the second power amplifier providing high current