With almost 20 years experience, our company have professionally designed, developed, manufactured and sold many kinds of volume controllers. This enables us to meet our customers and satisfy them. Un

Our products include many big series which are powerful PA system, amplifier, circumjacent equipment, ceiling speaker, column speaker, wall speaker, horn speaker, directional speaker, lawn speaker, vo

PA-B power amplifier series feature:1) Protect the circuit when higher temperature, larger input signal or overload. The radiator-fan moves faster when it alarms by sound and light2) Balanced input ex

PAM-211 pre-amplifier specifications:1) Input: MIC 1-6 1mV/600 ohms balanced; line 500mV/47k ohms unbalanced; CD 800mV/47k ohms unbalanced; deck 200mV/47k ohms unbalanced; tune 200mV/47k ohms unbalanc

WI-202 window interphone features:1) Completely automatic duplex talk back2) The user can separately adjust the sensitivity of the mainframe and extension3) It is sonorous and clear with low backflow4

WS-106, DS-0106 wall speaker specifications:1) Speaker caliber: WS-106 (6.5"), DS-0106 (4")2) Rated power: WS-106 (10W), DS-0106 (6W)3) Max. power: WS-106 (15W), DS-0106 (10W)4) Optional pow

CCA-15P/3 classroom amplifier feature:The classroom broadcast system outputs at 8 ohms by a 15W power amplifier and inputs by 1-channel MIC and 3-channel AUX with separate adjusting the volume of each

FSP-0130, CS-05 specifications:1) Speaker caliber: FSP-0130 (4.5" x 1, 1.5" x 1), CS-05 (6.5")2) Rated power: FSP-0130 (30W), CS-05 (6W)3) Max. power: FSP-0130 (40W), CS-05 (10W)4) Opti

FSP-501, FSP-502, FSP-502N specifications:1) Speaker caliber: 5"2) Rated power: 6W3) Max. power: 10W4) Optional power: 6W/3W/1.5W5) Input impedance: 1.7/3.3/6.6K ohms6) Frequency response: 150-12