Polsen HPA-4X2 4-Channel Stereo Reference Headphone Amplifier
SKU: 45864144400

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

Sale price$3690.00 Regular price$4100.00
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Description

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

  • 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)
UPC: 847628577695
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 k?
Output Impedance Minimum 10 ?, 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 1.3 lb
Box Dimensions (LxWxH) 7.2 x 3.9 x 2.5"
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
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 45864144400

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4.5 ★★★★★
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Hannah Hettasch
Belleville, US
★★★★★ 5
Not the most durable, but my dog LOVES it.
Style: Plush Surprise Color, Size: 24"
My boyfriend’s dog had the small version from Petsmart and she has been very gentle with it since she likes it so much. I decided to surprise her with this 24 inch one for Christmas. She was obsessed! It’s cute, it’s very soft, and has a big squeaker in the top, which she loves! She was a little more tough on it and it did get some rips 12 hours in, but it is still in one piece at the moment and brings lots of joy. The dog is a medium/large size. Dog toys can be so expensive. I personally think the was a great price despite not being the most durable. I may purchase again next year!
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Reviewed in the United States on January 3, 2026
C
Verified Purchase
Chachie Music
Boise, US
★★★★★ 5
Update: Excellent Customer Service Made Everything Worthwhile!
Style: Plush Surprise Color, Size: 24", Style: Plush Surprise Color, Size: 24"
07/17/2025: This doggy toy was destroyed within 2 hours of its arrival. In my opinion, it was not at all worth the cost. (1 star) Update (07/19/2025): I have contacted the manufacturer and they said they will send out a new replacement toy. As of now, I have revised the review to 2 stars for the excellent and efficient customer service pending arrival of said replacement. Will update again soon. (2 stars) Update (07/23/2025): The replacements have arrived! My dog loves the new plushie sloth and so far it is in tact. It doesn't have stuffing in the body as far as I can tell, so little to no clean up hopefully. They also sent her a spiked squeaky ball and she's getting used to it. This company has some of the best customer service and support that I've experienced. (5 stars)
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Reviewed in the United States on July 18, 2025
T
Verified Purchase
Travis H
Carnegie, US
★★★★★ 5
Cute, Squeaky, and So Much Fun — Perfect Little Loofa Toy
Style: Plush Surprise Color, Size: 6"
The Multipet Original Loofa Dog plush (6”) has been a huge hit. It’s super cute in person, and the random color is a fun surprise. For a plush toy, the durability has been better than expected. It’s held up well to regular play, and the seams have stayed intact. Chewability is solid for light-to-moderate chewers—my dog loves chewing and carrying it around, but it’s still a plush toy, so it’s not meant for aggressive shredders. The squeak is loud enough to keep my dog interested without being obnoxious, and it still squeaks consistently. It’s also really fun for dogs because it has a bit of bounce when tossed, so it’s great for indoor fetch and pouncing. Soft, adorable, and entertaining—easy 5 stars.
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Reviewed in the United States on January 7, 2026
T
Verified Purchase
TB
Charlottesville, US
★★★★★ 4
My dog’s favorite soft toy!
Style: Plush Surprise Color, Size: 12", Style: Plush Surprise Color, Size: 12"
My dog loves these toys! We will get a replacement for him every couple months or so because these are his favorite. The squeaker is his arch nemesis and it’s always his main priority to get that first. The material is very soft so he likes to lightly chew on it when he gets anxious or excited, only negative is that it does tear easy but there’s not a lot of stuffing so it’s not a big mess to clean. Definitely recommend to puppies and dogs that don’t annihilated their toys.
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Reviewed in the United States on April 26, 2026
D
Verified Purchase
D.G.
Louisville, US
★★★★★ 5
Puppy and price approved!
Style: Latex Surpise Color, Size: 6"
Great cheap little dog toys! Our 11 month large breed 90lb puppy loves to toss these around and squeak them between his teeth.. they eventually break down but that’s okay, at the low price of a couple to a few dollars each they make it affordable. They put some stuffing inside so it makes it slippery when our pup is nibbling on it. Funny enough these last longer than much more expensive toys that claim more durability! In 8 months we’ve gone through 2. That’s pretty good! Not chew resistant, but the latex offers a texture and squeak that I find makes our puppy go easier on them. Cute and easily packable.
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Reviewed in the United States on April 2, 2026

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