VL Audio V-BOX Proguard Stereo Passive Protection

VL Audio V-BOX PROGUARD

The VL Audio V-BOX PROGUARD is a 2-channel stereo passive protection direct box designed to protect audio equipment from voltage feedback, power surges and phantom DC through its V-PROTECTOR™ circuit while helping reduce ground loop, buzz and hum without requiring external power. It supports both analog and AES/EBU signals, provides a frequency response of 20Hz–20kHz ±0.001dB and achieves THD+N as low as 0.0011% at 0dBu, making it suitable for placement between mixers, DJ mixers, audio interfaces or other signal sources and powered speakers, DSP processors or other downstream equipment that requires additional system protection.

Features

• 2-channel stereo passive protection direct box requiring no external power
• V-PROTECTOR™ circuit protects against voltage feedback, power surges and phantom DC
• DC Blocking supports abnormal DC voltages from 0.8–50VDC
• Overvoltage Clamping operates within 15–18.8VAC to limit excessive voltage
• Fuse Protection disconnects the circuit when voltage exceeds the supported protection range
• Helps reduce ground loop, buzz and hum
• Independent LIFT / GROUND switch for each channel
• 20Hz–20kHz ±0.001dB frequency response provides ultra-flat signal transmission
• THD+N of 0.0011% at 0dBu and 0.0012% at +25dBu
• Supports maximum input / output levels up to +27.3dBu
• Supports both analog and AES/EBU signals
• Two-channel XLR / TS / TRS inputs
• Two-channel XLR male outputs
• Transformerless design helps avoid transformer saturation and low-frequency distortion
• Compact metal enclosure suitable for live sound, studio, DJ and installed audio systems

Specifications

Audio System

• Brand: VL Audio
• Model: V-BOX PROGUARD
• Series: V-BOX Series
• Type: Stereo Passive Protection Direct Box
• Number of Channels: 2
• Operation: Passive
• Power Requirement: No External Power Required
• Protection Circuit: V-PROTECTOR™
• Frequency Response: 20Hz–20kHz ±0.001dB
• THD+N @ 0dBu: 0.0011%
• THD+N @ +25dBu: 0.0012%
• Maximum Input / Output Level: +27.3dBu
• Signal Compatibility: Analog / AES/EBU

Protection System

• DC Blocking Range: 0.8–50VDC
• Overvoltage Clamping Range: 15–18.8VAC
• Fuse Protection: Yes
• Ground Loop / Buzz / Hum Reduction: Yes
• Ground Lift: Independent per Channel

Connectivity

• Inputs: 2 × XLR / 1/4″ TS/TRS
• Outputs: 2 × XLR Male
• Switches: Independent LIFT / GROUND per Channel

Dimensions & Weight

• Dimensions (H × W × D): 42 × 86 × 130 mm
• Weight: 0.44 kg