Alctron HA4-Plus Portable 4-Channel Headphone Amplifier USB Powered Level Contro

HA4 Portable 4-Channel Headphone Amplifier
Ideal for both home studio and stage use, the Alctron HA4 provides up to four headphone connections for ease of performance or recording monitoring. Each headphone has a separate volume control. It has two RCA inputs designed for taking a stereo line level signal from a mixing console. As well as a single TRS input that can be connected to a headphone output, effectively splitting a single headphone output four ways.

Plenty of Output Volume and Individual Control
Each of the 4 headphone outputs feature 1/4" sockets, ready for any monitoring headphones. Powerful individual amplifiers allow for plenty of volume in your cans, with each channel having its own volume knob for individual control.

Features:

• Powerful output volume
• Suits all monitoring headphones
• Individual volume control
• Included power adapter
• Rubber feet
• Robust metal case
• Powered via USB

Specifications:

• 4 channel headphone amplifier
• Input connector: 3.5mm, RCA
• Input Impedance: 1000KΩ(unbalanced)
• Max output level: +22dB
• Output connector: 6.35mm stereo
• Output Impedance: minimum 10Ω each channel
• Max gain: 20-dB each channel
• Signal to Noise Ratio: >98dB
• Supply: USB 5V 1AMP (included)

NOTE: Please do not use a PC to power this device via USB. Due to the PC, the purity of power and ground may cause noise.