Jensen JA Series review: Class-D amps hitting 690 W with Bluetooth DSP control & RGB lighting. Discover why JA1B, JA2B & JA4B are the top budget car-audio upgrade.

Written by: Tati&apos;yanna F. - Big Jeff Audio CSRThis week, I focused heavily on understanding the Jensen amplifier line, especially the&#xA0;<a href="https://bigjeffaudio.com/products/jensen-mono-block-690-watts-class-d-rgb-amplifier-w-bluetooth-app-control" target="_blank" rel="noopener noreferrer">JA1B</a>, JA2B, and&#xA0;<a href="https://bigjeffaudio.com/products/jensen-4-channel-740-watts-class-d-rgb-amplifier-w-bluetooth-app-control" target="_blank" rel="noopener noreferrer">JA4B</a>&#xA0;models, through our&#xA0;<a href="https://www.youtube.com/watch?v=M6QLqLn7vzQ&amp;list=PL18eMBdK6Lzwtxb0u6WNKdtntanGTlbHy" target="_blank" rel="noopener noreferrer">101 training videos</a>&#xA0;and supporting content. What stood out right away is how much value these amps pack for their price. They&#x2019;re compact, efficient Class D amplifiers with built-in Bluetooth app control, giving customers an easy way to fine-tune their sound without diving into complicated setups. Learning the features&#x2014;like customizable RGB lighting, clean design, and digital signal processing (DSP)&#x2014;really opened my eyes to how versatile these amps are, especially the JA1B mono that pushes up to 690 watts. The 2-channel and 4-channel options add flexibility, letting customers build around their needs, whether it&#x2019;s powering a small system or a full setup.What&#x2019;s been most valuable is seeing how well these amps serve our&#xA0;<a href="https://bigjeffaudio.com/pages/budget-friendly-car-audio-systems" target="_blank" rel="noopener noreferrer">budget-conscious</a>&#xA0;customers. They may not want to spend big on a full high-end system, but with Jensen, I can still offer them a solid, reliable, and great-sounding solution. That&#x2019;s been huge for building trust and making sales&#x2014;when I can confidently say, &#x201C;This is a smart, affordable option that performs way above its price,&#x201D; it makes the decision easy for them. I&#x2019;ve used everything we covered&#x2014;DSP tuning, install tips, product positioning&#x2014;to not just explain the amps better, but to guide people toward the right fit. That combination of knowledge and strategy is helping me close more effectively and feel even more in control of each call. I&#x2019;m pumped to keep learning and dialing in the pitch week by week.

Power & Value—A Dive into Jensen’s JA Series Amplifiers

We love staying loud—and B2 Audio USA just gave us two major reasons to turn it up even more. If you’ve been riding with Big Jeff Audio for a while, you already know we don’t just carry any brand. We team up with companies that push limits, and B2 Au

<img src="https://attachments.gorgias.help/0eMnwxKNnG79bDNo/hc/bVpA37l4R17J5oEd/2025072517-f31fa4b3-6cba-4669-bc68-96d07d244dc4-bj%20b@%20news%20blog%20banner.png" style="width: 692px;" class="fr-fic fr-dib fr-shadow fr-fil"> We love staying loud&#x2014;and B2 Audio USA just gave us two major reasons to turn it up even more. If you&#x2019;ve been riding with Big Jeff Audio for a while, you already know we don&#x2019;t just carry any brand. We team up with companies that push limits, and B2 Audio USA is doing exactly that right now. From marine audio to compact mids that scream, their latest product drops are wild&#x2014;and we&#x2019;re here for it.Let&#x2019;s break it down. &#x1F447;<hr data-start="810" data-end="813"><h3 data-start="815" data-end="869" id="-first-up-b2s-all-new-marine--power-sport-amp">&#x1F30A; First Up: B2&#x2019;s All-New Marine &amp; Power Sport Amp</h3>The <a data-start="877" data-end="978" rel="noopener noreferrer" target="_blank" href="https://www.b2audiousa.com/products/b2-audio-vatn-aquadust-800w-4ch-2-ohm-waterproof-marine-power-sport-amplifier">VATN Aquadust 800.4</a> just launched, and it&#x2019;s the first release in B2&#x2019;s brand-new VATN Marine Series. This thing is built from the inside out to survive boats, side-by-sides, and harsh weather&#x2014;with an 800W RMS output, full IPX5 waterproofing, and the kind of clean sound you expect from B2.Whether you&apos;re working on a custom off-road build or upgrading your weekend water toy, this amp brings serious power in a sealed, compact package.&#x1F449; <a data-start="1408" data-end="1535" rel="noopener" target="_new" href="https://b2audiousa.gorgias.help/en-US/2050997-e8b512c8b53a481595f7210b6a67421e">Read more about the VATN Aquadust 800.4 here.</a><hr data-start="1539" data-end="1542"><h3 data-start="1544" data-end="1601" id="-then-theres-the-riot-25--tiny-speaker-big-talk">&#x1F525; Then There&apos;s the RIOT 2.5 &#x2014; Tiny Speaker, Big Talk</h3>Next up is one of the most exciting little speakers we&#x2019;ve seen in a minute. The <a data-start="1685" data-end="1798" rel="noopener" target="_new" href="https://b2audiousa.gorgias.help/en-US/coming-soon-riot-25-%E2%80%94-small-frame-savage-output-2052127">RIOT 2.5</a> is an ultra-compact 2.5&quot; mid that&#x2019;s coming soon, and already turning heads. It&#x2019;s tuned for high output in super-tight installs&#x2014;think RC builds, door pods, powersports, motorcycles&#x2014;anywhere you want to get loud without taking up real estate.With 40W RMS, a 90dB sensitivity rating, and clean vocal clarity, this one&#x2019;s going to knock the dust out of your next custom build.&#x1F449; <a data-start="2185" data-end="2331" rel="noopener" target="_new" href="https://b2audiousa.gorgias.help/en-US/coming-soon-riot-25-%E2%80%94-small-frame-savage-output-2052127">Check out the full RIOT 2.5 preview here.</a><hr data-start="2335" data-end="2338"><h3 data-start="2340" data-end="2363" id="-why-this-matters">&#x1F6A8; Why This Matters</h3>At Big Jeff Audio, we&#x2019;re all about helping you find the right gear for your next project&#x2014;and working with brands like B2 Audio USA means we get first access to the gear that&#x2019;s changing the game. These releases aren&#x2019;t just new&#x2014;they represent the kind of build-focused innovation that makes your system louder, cleaner, and more durable.So whether you&#x2019;re in the garage, on the water, or trailblazing through mud and sand, now&#x2019;s the time to watch what B2 Audio USA is doing. Big things are happening&#x2014;and we&#x2019;re proud to be along for the ride.Shop B2 and sign up for Exclusive B2 Audio Product updates <a href="https://bigjeffaudio.com/collections/b2-audio" target="_blank" rel="noopener noreferrer">here</a><hr data-start="2907" data-end="2910"><h3 data-start="2912" data-end="2935" id="-want-first-dibs">&#x1F6D2; Want First Dibs?</h3>We&#x2019;ll have these products in stock at Big Jeff Audio the moment they land. Bookmark these links or sign up for notifications&#x2014;because once they drop, they&#x2019;re going to move fast.By: Pinky @BigJeffAudio - Creative Team <button class="klaviyo_form_trigger">Click here</button><script>
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