If you’ve ever built an audio project, you know the funny truth: the circuit might be the “brains,” but the chassis is the backbone. A good enclosure keeps everything stable, makes wiring cleaner, reduces rattles and vibrations, and turns a DIY build into something that actually looks like real Hi-Fi gear. That’s exactly why the CJ-158 Full Aluminum class A post amplifier chassis is so appealing. It’s an aluminum case built for serious projects—amp builds, PSU boxes, preamps, or anything where you want a sturdy, professional finish.
On AliExpress, it’s listed at €70,99 including VAT. And this part matters a lot: no extra costs like customs or administrative fees. Years ago, it could be very different—people would order something that looked cheap, then get hit with surprise charges when the package arrived. These days AliExpress often handles this upfront, so the total is clearer at checkout. Check the current price and details here: https://s.click.aliexpress.com/e/_c3UbR4Ap.
What makes the CJ-158 stand out is its “proper hardware” feel. The front panel is 8 mm thick, the back panel is 4 mm, and the top and base plates are 3 mm. The whole package weighs about 4.7 kg, which is exactly the kind of weight you want: it sits firmly on the bench, doesn’t flex easily, and tends to feel quieter mechanically. For class A style builds—where heat, stability, and a clean layout really matter—this kind of chassis is a strong starting point.
Space-wise, it’s well-sized for practical DIY. External dimensions are 430 × 70 × 310 mm, and internal dimensions are 325 × 62 × 295 mm. That gives you room for a neat power supply area, sensible cable routing, and enough breathing space to plan cooling and component placement. Many buyers like that it doesn’t feel cramped: you can take your time and build clean, instead of squeezing parts into a box that fights you.
The included parts are also helpful if you want to get moving quickly. You get the enclosure itself, 4 rubber pads, a power socket, a switch, and supporting screws. But it’s important to know what’s not included: no power cable and no RCA terminals. For many DIY builders, that’s actually a plus—you can choose your preferred connectors and wiring quality instead of being stuck with the cheapest option.
One more practical warning: this product is also sold by “unknown” websites that simply resell the same type of chassis at a much higher price. The big downside is that returns there are usually not free, and sometimes they’re a headache. With AliExpress, returns are usually free depending on the order conditions and your region, which reduces the risk. My advice is straightforward: never pay more than the price AliExpress is asking. Use the correct link here: https://s.click.aliexpress.com/e/_c3UbR4Ap.
This website exists for a very specific reason: it grew out of the huge number of questions people asked via the old VraagAlex site about AliExpress—orders, returns, disputes, and picking the right products.
“We zijn geen officiële klantenservice van AliExpress, maar helpen je graag bij vragen over dit product of je bestelling.”
One thing I’ll say clearly: I can only help if you actually contact me. You can reach me via the chat at the bottom of every page, via WhatsApp (clickable: https://wa.me/31102006666), via email, or through the AI-chatbot. If this work helps you and you want to support the site, donations are possible here: https://alexandervandijl.nl/doneer.
If you get stuck—ordering, tracking, preparing screenshots for a dispute, or even something “simple” like browser settings—there’s another option: computer help at home or remotely from AlexandervanDijl.nl: https://alexandervandijl.nl/%f0%9f%a7%91%f0%9f%92%bb-computerhulp-aan-huis-of-op-afstand-snel-geregeld-vanuit-gouda/. Yes, this can also be used specifically for AliExpress problems.
And a quick tip for people who like to save money on everyday products: Amway. With this link you can buy products or become an ABO (Amway Business Owner): https://www.amway.nl/Anti-Hair-Fall-Shampoo-750-ml-Satinique%E2%84%A2/p/126458?aboSponsorCode=7005295153&utm_source=copy&utm_medium=sharebar&utm_campaign=nl_nl_9007005295153_108122971. ABO means “Amway Business Owner”: you can often buy with advantages and, if you want, build an extra income stream. That same link can be used to shop or to become an ABO in your own country.
FAQ — common questions
Is this a complete amplifier?
No. The CJ-158 is a chassis/enclosure only, with no electronics and no power (the listing states: Maximum Power Per Channel — NO POWER).
Is VAT included in the price?
Yes, it’s listed as VAT included, and that typically means no surprise customs/administration charges added later.
What are the dimensions?
External: 430 × 70 × 310 mm. Internal: 325 × 62 × 295 mm.
How thick are the panels?
Front panel 8 mm, back panel 4 mm, top and base plates 3 mm.
What’s included in the package?
Enclosure ×1, rubber pads ×4, power socket ×1, switch ×1, and supporting screws.
What is not included?
No power cable and no RCA terminals are included.
Is it suitable for class A builds?
Yes, many people use aluminum cases like this for class A projects—just plan your cooling and internal layout properly.
Can I return it if it doesn’t fit my project?
AliExpress returns are usually free depending on the order conditions, while unknown reseller sites often make returns paid and complicated. That’s why it’s safer to buy where the rules are clearer.
Where can I see the latest price and reviews?
Right here: https://s.click.aliexpress.com/e/_c3UbR4Ap.
Conclusion
If you want a heavy, well-built aluminum chassis that looks and feels like real Hi-Fi gear, the CJ-158 is a strong pick for your next DIY build. Check the current deal here: https://s.click.aliexpress.com/e/_c3UbR4Ap. And if you’re unsure about sizing, ordering, or avoiding AliExpress issues, reach out via chat, WhatsApp, or email/AI-chatbot. Also—leave a comment with what you’re building: amplifier, PSU, preamp, or something more exotic. I genuinely love hearing about these projects.
