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Polsen HPA-4X2 4-Channel Stereo Reference Headphone Amplifier

You Pay: $39.99
Product Highlights
  • For Pro & Project Studio Applications
  • Durable & Compact Design
  • 1x 1/4" TRS Stereo Input
  • Stereo RCA Inputs
  • 4x 1/4" Stereo Headphone Outputs
  • Low-Noise Circuitry
  • Independent Amp Circuits Per Channel
  • Link Feature Daisy Chains Multiple Units
  • Stereo/Mono Switch
  • Includes 4x Mini Plug Adapters

The HPA-4X2 4-Channel Stereo Reference Headphone Amplifier from Polsen features a durable and compact design and can be used for a variety of professional and project applications including studio recording and stage monitoring, or any application that requires multiple headphone connections. Each of its four channels features independent volume control in the form of a volume knob as well as independent amp circuits, allowing for a wide frequency response of 20 Hz to 20 kHz and low distortion at high volumes, while assuring no signal loss when all 4 headphone outputs are used simultaneously. Thanks to its Link feature, you can daisy chain multiple HPA-4X2s together to cater to your needed headphone count.

The unit features a 1/4" stereo TRS input, and stereo RCA inputs. It mono button allows for mono signal compatibility. For its headphone outputs, it features four 1/4" TRS connectors. 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
1/4" TRS and RCA inputs
Four headphone jacks each with independent volume control
Wide frequency response (20 Hz to 20 kHz) for full-range stereo sound
Stereo/mono switch provides options for monitoring playback
Link feature to daisy chain additional headphone amplifiers
No loss of signal when all four headphones are connected
Included stereo mini cable for connecting devices with 1/8" output (use included 1/4" adapter)
Channels 4
Input Connections 1x 1/4" (6.3 mm) TRS master input
1x L,R RCA
Output Connectors 4x 1/4" (6.3 mm) TRS headphone outputs
Maximum Input Level +14 dBV
Maximum Output Level 22 dB, per channel
Input Impedance 1 kΩ
Output Impedance Minimum 10 Ω, per channel
Signal to Noise Ratio >98 dB
THD <0.007%
Power 12 V DC, 150 mA
Dimensions (L x W x D) 3.00 x 3.75 x 1.20" (76 x 95 x 30 mm)
Weight 10.4 oz (295 g)
Polsen HPA-4X2 4-Channel Stereo Reference Headphone Amplifier
  • Stereo Mini Male to Stereo Mini Male Cable
  • 4 x 1/8" (3.5 mm) Stereo Mini to 1/4" (6.3 mm) TRS Stereo Adapter
  • DC 12 V/150 mA Power Supply
  • Limited 1-Year Warranty
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