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

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

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

B&H # POHPA4X2 MFR # HPA-4X2
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Polsen HPA-4X2 4-Channel Stereo Reference Headphone Amplifier

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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
  • Link Feature Daisy Chains Multiple Units
  • Stereo/Mono Switch
  • Includes 4x Mini Plug Adapters
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Polsen HPA-4X2 overview

  • 1Description

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. Features include a wide frequency response of 20 Hz to 20 kHz with low distortion at high volumes, and no signal loss when all 4 headphone outputs are used simultaneously. Each of its four channels allows for independent volume control. 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)
UPC: 847628577695
In the Box
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
  • Table of Contents
    • 1Description

    Polsen HPA-4X2 specs

    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)
    Packaging Info
    Package Weight 1.0 lb
    Box Dimensions (LxWxH) 7.2 x 3.9 x 2.5"

    Polsen HPA-4X2 reviews

    HPA-4X2 4-Channel Stereo Reference Headphone Amplifier is rated 4.7 out of 5 by 15.
    Rated 4 out of 5 by from Good Product, room for improvement. Decent build quality with smooth pots that don't sound scratchy when adjusting the volume. There are 3 issues that I had with this product that I hope the manufacturer will take note of. 1: The supplied power adapter only runs on 110v. It was a good thing I caught that or I would have destroyed my device (220v). 2: The DC connector is wired center pin negative. This is opposite from most popular power sources. 3: No power switch. I opened the case, cut the circuit board tracks and soldered in a few jumpers to convert the unit to a center positive configuration. I also added a power switch while i was in there. Problems solved!
    Date published: 2014-09-28
    Rated 5 out of 5 by from Plenty of volume I use this to power headphones for an elderly person to use for listening to TV broadcasts. The volume is more than enough even though she has a substantial hearing loss. It is also quiet (no hiss) with good fidelity and easy to setup and use.
    Date published: 2015-02-10
    Rated 5 out of 5 by from Solid headphone amplifier The� Polsen HPA-4X2 4- is a basic but solid amplifier. I use it to monitor audio during video editing and it has no lag or latency.�I have not perceived any noise or rumble either.�If you need to boost your audio signal, from a stereo RCA or a 1/4" TRS��source, for monitoring, this is it. The various mini-plugs that come with it are handy.
    Date published: 2018-01-14
    Rated 4 out of 5 by from A very useful device This is why I needed this product: My wife and I often listen to the same (ambient) music but we have different levels of sound tolerance. Now she can mute it, while I have the volume pretty high. This little device makes everybody happy in our household. I didn't know what to expect before I purchased it, but it really is a useful little thing.
    Date published: 2014-11-17
    Rated 5 out of 5 by from Totally Portable HP Amplifier Love this thing. I use it for recording my podcast interviews when I have multiple guest. Love the fact that they can control their headphone volume, it takes up very little space and the fact that all of the adapters were included. Never heard of Polsen before HP and can't find this item anywhere else but I like. I plug it into the mic input of my microphone preamp and it works perfectly.
    Date published: 2015-03-23
    Rated 4 out of 5 by from Basic, but functional... Surprisingly good for the money, with the Aphex 4 channel headphone amp being the reference for this type of unit...� Gives good gain, durable, has separate stereo op-amp for each channel... Very little not to like here, and if you have any of the current crop of affordable DAW interfaces, you know you only get one headphone output...� Just buy it... You can always use it in your kit... (m.)
    Date published: 2018-02-24
    Rated 5 out of 5 by from great way to boost signal Works perfectly. I needed a way to boost the audio signal on my video for a noisy exhibition. Even after boosting my gain and adjusting the volume on the audio, the audio still couldn't be heard when there was a crowd. The Polsen solved that in one easy step. No distortion, very easy to install. handles multiple sets of headphones at once.
    Date published: 2018-07-05
    Rated 5 out of 5 by from Great headphone amp. I haven't driven more than one set of phones as yet. Very low noise at max volume. lots of level to work with. Like the stereo/mono capabilities. Would love to see 2 TRS balanced audio ins along with the 2 RCA ins instead of it's current configuration. All in all, it's a great buy.
    Date published: 2016-05-30
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