Samson QH4: 4-Channel Headphone Amp with Volume Controls & Mute.

The Samson QH4 is a high-performance 4-channel headphone amplifier designed for stereo desktop headphone distribution. It provides independent volume control for each channel, ensuring optimal sound management for multiple users. With versatile input options and robust output capabilities, the QH4 is perfect for studio tracking, podcasting, or casual listening sessions.

Features

• 4 Independent Channels: Deliver clean, crisp audio to up to four sets of headphones, accommodating headphones from 16 to 600 ohms.
• Individual Volume Controls: Each channel features its own volume control for personalized listening levels.
• Multiple Input Options: Includes two balanced 1/4-inch inputs for mixers or recording interfaces and a stereo 1/8-inch auxiliary input for devices like smartphones.
• Daisy-Chaining Capability: An additional 1/8-inch aux output allows for daisy-chaining multiple QH4 units.
• Master Mute and Mono Switches: Convenient controls for quick adjustments to the overall headphone level and mono compatibility.
• Ultra-Low Noise Floor: Ensures high-fidelity sound with minimal interference, making it suitable for professional audio applications.

Specifications

• Input Channels: 2 x 1/4" balanced, 1 x 1/8" unbalanced TRS
• Output Channels: 4 x stereo 1/4" unbalanced, 1 x stereo 1/8" unbalanced TRS
• Controls: Master volume, master mute, master mono, 4 x channel volume
• Noise Floor: -114dBu, 22k BW unweighted
• Maximum Output: 8.3 dBu, 1% THD+N, loaded 16R
• Output Power: 282mW per side / 564mW per channel, loaded 32Ω
• Dynamic Range: 22dB, 22k BW
• Frequency Response: 17Hz–47kHz (-3dB)
• Power Supply: 15VDC adapter
• Dimensions: 124mm x 124mm x 40mm
• Weight: 0.4 kg