G-MARK X440 Wireless MicrophonesSystem features: UHF 4 channel professional receiver Universal Receiver With LED Display Can adjust 4 channels can work without interference at the same time Individual channel volume controls Lntroducing frequency compress expanding technology to reduce the noise and enlarge the dynamic range Perfect operation status indications Wide frequency response range, super low distortionSpecifications: Number of channels: 4 channels Stability: 0. 006% Normal

System features:

UHF 4 channel professional receiver
-Universal Receiver With LED Display
-Can adjust
-4 channels can work without interference at the same time
-Individual channel volume controls
-Lntroducing frequency compress expanding technology to reduce the noise and enlarge the dynamic range
- Perfect operation status indications
- Wide frequency response range, super low distortion

Specifications:
-Number of channels: 4 channels
-Stability: ± 0.006%
- Normal deviation: ± 22kHz
-S / N ratio: <120dB
-T.H.D: <0.6%
-Frequency response: 50Hz-15kHz

Recipient:
-Sensitivity:> 80dB
-Audio output: Balanced and Unbalanced
-Power requirement: AC 16V, 400mA
-Dimensions: 440 × 210 × 40mm
-Weight (weight): Approx. 1.3 kg
-One 1/4 "mixed and four 1/4" single outputs
-Battery: Built in 18650 lithium battery
-Battery life: <5 hours

Wireless microphone:
- Cartridge: Dynamic
-RF output: <10mW
- Normal deviation: ± 22kHz
-Maximum deviation: ± 80kHz
-Battery: 2 x 1.5V battery
-Battery life: <5 hours