AKG

HP4E

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4-channel headphone amplifier

$125.00 125.0 each
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The ideal compact headphone amp

The HP4E professional headphone amplifier features two stereo input and four stereo output channels of high-quality audio. Designed for ease of use, convenient switches on the front plate enable you to select your designed input. Each channel features both a 1/8” (3.5 mm) and 1/4” (6.3 mm) headphone output for easy connectivity – no adapters required. Housed in a sturdy metal chassis, the HP4E is an ideal headphone amp for any recording session. Available in the US only.

Item# 3450H00010

General Specifications

Design 4-Channel Headphone Amplifier
Input 6.3 mm (1/4”) socket - unbalanced
Input impedance 100k Ohms
Output 3.5 mm (1/8”) socket and 6.3 mm (1/4”) socket per channel
Output impedance 11 Ohms
Audio frequency bandwidth 20 - 20000 Hz
Max. output level 220 mW
Distortion <0.05%
Signal to Noise better than 85 dB-A
Net weight (incl. power supply) 760 g
  • 1 x HP4E
  • 1 x Power Supply (12V)
  • 1 x Quick Set Up Guide

The latest owner's manuals, quick start guides, and documents.

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FAQs

<!--begin-bvseo-reviews--> <!--begin-reviews--> <div id="bvseo-reviewsSection"> <div class="bvseo-review" itemprop="review" itemscope itemtype="http://schema.org/Review" data-reviewid="215262724"> <span itemprop="reviewRating" itemscope itemtype="http://schema.org/Rating"> Rated <span itemprop="ratingValue">5</span> out of <span itemprop="bestRating">5</span> </span> by <span itemprop="author" itemtype="http://schema.org/Person" itemscope><span itemprop="name">CDietz</span></span> from <span itemprop="name">Everything I was looking for!</span> <span itemprop="description">I love this thing! I needed a way to keep several output devices plugged into my production computer, some high impedance, some low, some with 1/4&quot; pins, some with 1/8&quot;. This piece is sturdily constructed and compact, has all the controls I need in front, and doesn't color the output. It is a great device for a fair price. Get it.</span> <div class="bvseo-pubdate">Date published: 2022-03-01</div> <meta itemprop="datePublished" content="2022-03-01" /> </div> <div class="bvseo-review" itemprop="review" itemscope itemtype="http://schema.org/Review" data-reviewid="214415588"> <span itemprop="reviewRating" itemscope itemtype="http://schema.org/Rating"> Rated <span itemprop="ratingValue">5</span> out of <span itemprop="bestRating">5</span> </span> by <span itemprop="author" itemtype="http://schema.org/Person" itemscope><span itemprop="name">Lurid Delusion</span></span> from <span itemprop="name">Exactly what I needed.</span> <span itemprop="description">I was looking for a small, versatile, multi-output amplifier so I could keep all of my high- and low-impedence output devices plugged in and just turn up the ones I needed so I could stop crawling under my desk to switch devices. I also already had an AKG mic which I love. This was a no-brainer, and it's perfect!</span> <div class="bvseo-pubdate">Date published: 2022-01-27</div> <meta itemprop="datePublished" content="2022-01-27" /> </div> <div class="bvseo-review" itemprop="review" itemscope itemtype="http://schema.org/Review" data-reviewid="208591732"> <span itemprop="reviewRating" itemscope itemtype="http://schema.org/Rating"> Rated <span itemprop="ratingValue">5</span> out of <span itemprop="bestRating">5</span> </span> by <span itemprop="author" itemtype="http://schema.org/Person" itemscope><span itemprop="name">Nivram</span></span> from <span itemprop="name">works as intended</span> <span itemprop="description">just plugged it in..... happy with ease of set up no brainer</span> <div class="bvseo-pubdate">Date published: 2021-06-16</div> <meta itemprop="datePublished" content="2021-06-16" /> </div> <div class="bvseo-review" itemprop="review" itemscope itemtype="http://schema.org/Review" data-reviewid="219099520"> <span itemprop="reviewRating" itemscope itemtype="http://schema.org/Rating"> Rated <span itemprop="ratingValue">2</span> out of <span itemprop="bestRating">5</span> </span> by <span itemprop="author" itemtype="http://schema.org/Person" itemscope><span itemprop="name">QAChip</span></span> from <span itemprop="name">Sound leaks to all outputs, even from input A to B</span> <span itemprop="description">I bougth this to feed my k172 pro and k702. I connected both and noticed that I could hear the sound in both headphones when one has some volume and the other has zero volumne (&quot;complete muted&quot;). I can also hear input A, when input B is selected. There is no On/Off swithch. The only way to turn it off is by pulling off the cord.</span> <div class="bvseo-pubdate">Date published: 2022-08-20</div> <meta itemprop="datePublished" content="2022-08-20" /> </div> </div> <script type="text/javascript"> if (document.getElementById('bvseo-reviewsSection')) { document.getElementById('bvseo-reviewsSection').style.display = 'none'; } </script> <!--end-reviews--> <ul id="BVSEO_meta" style="display:none!important"> <li data-bvseo="bvDateModified">y_2023, m_3, d_22, h_23</li> <li data-bvseo="ps">bvseo_bulk, prod_bvrr, vn_bulk_3.0.34</li> <li data-bvseo="cp">cp_1, bvpage1</li> <li data-bvseo="co">co_hasreviews, tv_0, tr_4</li> <li data-bvseo="cf">loc_en_US, sid_hp4e, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]</li> <li data-bvseo="diagnostics">clientName_akg</li> </ul> <!--end-bvseo-reviews--> <ul id="BVSEOSDK_meta" style="display: none !important;"> <li data-bvseo="sdk">bvseo_sdk, dw_cartridge, 18.2.0, p_sdk_3.2.0</li> <li data-bvseo="sp_mt">CLOUD, getReviews, 44ms</li> <li data-bvseo="ct_st">reviews, product</li> </ul>
<!--begin-bvseo-questions--> <!--begin-questions--> <div id="bvseo-questionsSection"> <div class="bvseo-question-answer" data-questionid="5694688"> <h2 class="bvseo-question"> Hi I want to use my k340 headphone with my iPhone should I get HP4E for sound and bass improvement thanks&amp;nbsp; </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: All over</div> <div class="bvseo-answer" data-answerid="5951463"> This is a rack mount amp I don&amp;rsquo;t have much experience with stuff like this but just from the spec sheet no go with something from fiio of schitt <div class="bvseo-author">Answered by: 1uke</div> <div class="bvseo-pubdate">Date published: 2023-01-12</div> </div> </div> <div class="bvseo-question-answer" data-questionid="5873691"> <h2 class="bvseo-question"> Why is it that right side headphone has no sound ? This has been a repeated issue with this model I found put after the fact online. How can this issue be fixed? </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: Tiff</div> <div class="bvseo-answer" data-answerid="5837216"> We would like to get more information to help you out, please contact us so we can assist you: https://bit.ly/2WqpXfi <div class="bvseo-author">Answered by: Mario at Customer Service</div> <div class="bvseo-pubdate">Date published: 2021-06-06</div> </div> </div> <div class="bvseo-question-answer" data-questionid="5694679"> <h2 class="bvseo-question"> Hi I&amp;rsquo;ve an old k340 in good condition for casual use &amp;nbsp;&amp;amp; I&amp;rsquo;m attempting to get k712. Is there any sound approvals in k712 or should I stick to my k340 headphone? </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: All over</div> <div class="bvseo-answer" data-answerid="5688035"> To better answer your inquiry, please reach out to our Professional Audio team at https://www.akg.com/support-contact-pro.html <div class="bvseo-author">Answered by: Homer at Customer Service</div> <div class="bvseo-pubdate">Date published: 2021-06-06</div> </div> </div> <div class="bvseo-question-answer" data-questionid="5672386"> <h2 class="bvseo-question"> I want to buy the AKG K712 PRO , Currently I have a RME Baby Face Sound card. Do I need this HP4E Amp to get the real juice of this headphones? </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: Anonymous</div> <div class="bvseo-answer" data-answerid="5669524"> We would like to get more information to help you out, please contact us so we can assist you: https://bit.ly/2WqpXfi <div class="bvseo-author">Answered by: Mario at Customer Service</div> <div class="bvseo-pubdate">Date published: 2021-06-06</div> </div> </div> <div class="bvseo-question-answer" data-questionid="5614988"> <h2 class="bvseo-question"> Can I plug a stereo 1/4&amp;quot; input cable and hear stereo output from each channel? Vs. having to plug two left and right mono cables in to hear stereo output. I need the former. Thanks! </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: TalboGold</div> <div class="bvseo-answer" data-answerid="5615417"> Since you&#39;re inquiring about one of our Professional Audio products. Please reach out to our Pro Audio team at 844-776-4899 (8:00 AM - 6:00 PM CST M-F) <div class="bvseo-author">Answered by: Homer at Customer Service</div> <div class="bvseo-pubdate">Date published: 2021-06-06</div> </div> </div> <div class="bvseo-question-answer" data-questionid="6726607"> <h2 class="bvseo-question"> How compatible is this amplifier with a set of AKG K 240DF headphones (600 ohms)? </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: Dave0909</div> </div> <div class="bvseo-question-answer" data-questionid="4224675"> <h2 class="bvseo-question"> I am more often seeing external power supplies which handle up to 240. Is this a less versatile 12V adapter that I will need to replace, or can it handle 240? Unfortunately, I don&#39;t make a habit of lugging around a transformer everywhere I travel. </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: Redmusic1</div> </div> <div class="bvseo-question-answer" data-questionid="5860090"> <h2 class="bvseo-question"> Is it ok to leave the AKG HP4E 4 on 24/7..???.if it has an on/off switch I havent seen it .... </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: Anonymous</div> </div> </div> <script type="text/javascript"> if (document.getElementById('bvseo-questionsSection')) { document.getElementById('bvseo-questionsSection').style.display = 'none'; } </script> <!--end-questions--> <!--begin-pagination--> <ul id="bvseo-paginationSection"> <li class="bvseo-paginationItem"><a class="bvseo-paginationLink" href="https://www.akg.com/Headphones/Headphone%20Amps/3450H00010.html?pagetype=product&cgid=Headphone%20Amps&dwvar_3450H00010_color=Black-GLOBAL-Current&bvrrp=Main_Site-en_US/questions/product/2/hp4e.htm">HP4E Questions - page 2</a></li> </ul> <!--end-pagination--> <ul id="BVSEO_meta" style="display:none!important"> <li data-bvseo="bvDateModified">y_2023, m_3, d_22, h_23CST</li> <li data-bvseo="ps">bvseo_bulk, prod_bvqa, vn_bulk_3.0.34</li> <li data-bvseo="cp">cp_1, bvpage1</li> <li data-bvseo="co">co_hasquestionsanswers, tq_10</li> <li data-bvseo="cf">loc_en_US, sid_hp4e, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]</li> <li data-bvseo="diagnostics">clientName_akg</li> </ul> <!--end-bvseo-questions--> <ul id="BVSEOSDK_meta" style="display: none !important;"> <li data-bvseo="sdk">bvseo_sdk, dw_cartridge, 18.2.0, p_sdk_3.2.0</li> <li data-bvseo="sp_mt">CLOUD, getContent, 16ms</li> <li data-bvseo="ct_st">questions, product</li> </ul>