The HMA-41 4-Channel Stereo Headphone Amplifier from Polsen features a durable, compact, and easy to use design for a variety of professional and project applications, including studio recording, band rehearsals, and more. It features a high-output level that allows for precise monitoring at high volume, while its low-noise circuitry ensures clear reproduction of your sound. Each of its four channels boasts independent volume control and amp circuitry, which allows for a wide frequency response of 20 Hz to 20 kHz for full-range stereo sound while assuring no signal loss when all 4 headphone outputs are used simultaneously.

The unit features a 1/4" stereo TRS input, and four 1/4" TRS headphone outputs. To assure compatibility with a variety of headphones, Polsen includes four 1/8" to 1/4" adapters as well as a stereo mini cable that, when used with one of the included adapters, allows you to connect a device with a 1/8" output.

Durable, compact, and easy to use

High output level for precise monitoring at high volume

Low noise circuitry

Four headphone jacks each with independent volume control

Wide frequency response (20 Hz to 20 kHz) for full-range stereo sound

No loss of signal when all four headphones are connected

Includes 5 ft (1.5 m) stereo mini cable for connecting devices with 1/8" output (use included 1/4" adapter)

SPECIFICATIONS
Channels: 4
Frequency Response: 20 Hz to 20 kHz
Input Connections: 1x 1/4" (6.3 mm) TRS master input
Output Connectors: 4x 1/4" (6.3 mm) TRS headphone outputs
Maximum Input Level: +14 dBV
Maximum Output Level: 20 dB per channel
Input Impedance: 100 kΩ, unbalanced
Output Impedance: 51 Ω, per output
Signal to Noise Ratio: >90 dB
THD: Power: 12 V DC, 150 mA
Dimensions (L x W x D): 3.9 x 3.2 x 1.2" (100 x 80 x 30 mm)
Weight: 9.6 oz (272 g)

• For Pro & Project Studio Applications * Compact & Portable Design * 1x 1/4" TRS Stereo Input
• 4x 1/4" Stereo Headphone Outputs * Low Noise Circuitry * Independent Volume Control Per Channel
• Individual Amp Circuits Per Channel * Wide Frequency Response * Low Distortion at High Volumes
• Includes 4x Mini Plug Adapter
• Includes: 4 x 1/8" (3.5 mm) to 1/4" (6.3 mm) Adapters, 5' (1.5 m) Stereo Mini Male to Stereo Mini Male Cable, DC 12 V/150 mA Power Supply, Limited 1-Year Warranty

For Pro & Project Studio Applications * Compact & Portable Design * 1x 1/4" TRS Stereo InputPolsen