Compact 4-Out Headphone Amp The ZHA-4 splits a single stereo headphone output into four separate powered 1/8˝ headphone jacks, each with their own volume and mute control. Perfect for bands, podcasts, productions, and more. Portable, stereo headphone amplifier designed for demanding and critical audio monitoring. 4 independent 3.5 mm headphone outputs, each with a dedicated volume control knob. Independent mute buttons for each channel provides the ability to mute each output channel immediately without affecting overall output settings. High versatility of the two-way power system. Powered by either two AA batteries or the USB Type-C connector from USB AC adapter or USB battery pack. Specs

• Gain: 24 dB Clipping level: +18 dBu


• Output impedance: 47 Ω


• Frequency characteristics: 10 – 50 kHz, +/-1.0 dB


• Dynamic range: ≧100 dB


• Input impedance: 10 kΩ


• Power supply: 2*AA batteries (alkaline, nickel-metal hydride or lithium) / External


• USB Type-C DC5V / 1 A Weight: 180 g External dimensions: 130 × 70 × 52 mm

Estimated continuous operation time using batteries: about 3.5 hours with Alkaline / about 4.5 hours with NiMH (1900 mAh) / about 8.5 hours with Lithium •Connecting 4 headphones with 32 Ω load •Continuous battery operation times were determined using in-house testing methods. They will vary greatly according to use conditions.