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1 Year
$10.99
2 Year
$16.00
3 Year
$21.00
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Review Summary
Accidents happen. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failures, and more.
If we can’t fix it, we’ll replace it at no additional cost.
Protect your product from drops, spills, and more.
Enjoy your gear without fear. We have you covered!
When regular use of your product over time results in mechanical or electrical failure.
We will never charge you a deductible after the purchase of a plan.
Our claims process is simple & easy and our customer service team is happy to help.
Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for international or U.S. territories purchases. Plans on open box items do not cover pre-existing damage.
Adorama Protect plans are available for ABS clients. If you have any questions or require assistanse, please call 800-223-2500
Browse our FAQ
100k-Ohm Unbalanced
+19dBV
Stereo 1/4" TRS Phone Jack
4x Stereo 1/4" TRS Phone Jacks
1x 3.5mm Jack
100 Ohm each output
20dB/Channel
>90dB
<0.005%
<0.005%
18V DC
00091037927859
Because your audio experience demands versatility and quality, the HM-4 4-Channel Headphone Amplifier emerges as the quintessential choice for audio professionals and enthusiasts alike. This high-quality, durable unit is designed to deliver powerful, amplified sound to four separate sets of headphones, each with independent volume control, ensuring a personalized listening experience for each user.
The HM-4 is not just a headphone amplifier; it's a compact powerhouse, perfect for personal monitoring in both live stage performances and studio settings. Its robust build houses four 1/4" stereo headphone outputs, with an additional 3.5mm jack in parallel on OUTPUT 4, catering to a variety of headphone connectors and setups.
Each headphone output is equipped with its own volume control, allowing for precise sound level adjustments. The 1/4" stereo INPUT jack accepts a wide range of audio sources, while the MONO switch offers the option to sum line-level inputs for mono signal monitoring when required.
Included with the HM-4 is a 20V AC adapter, ensuring that you have all the necessary power for your sessions. Setting up the HM-4 is a breeze; simply connect the AC adapter to the 20V DC POWER INPUT on the rear panel and plug it into any standard AC outlet, then adjust the control knobs to your preferred settings.
Whether you're a professional sound engineer, a music producer, or an audiophile, the HM-4 4-Channel Headphone Amplifier stands out with its powerful, high-fidelity amplification, making it a versatile and indispensable tool in your audio equipment arsenal.