The Amnvolt SI4732 Radio Mini
The AMNVOLT Mini Si4732 Radio (ESP32‑S3) is a pocket-sized, all‑band DSP receiver featuring an ESP32‑S3 MCU and Si4732 chip. It supports FM, AM, MW, SW, LW, plus SSB/LSB/USB modes and sports a 1.9″ IPS color display. It’s encased in a 3D‑printed PETG shell, powered by an 800 mAh battery (≈10 hr life), and uses USB‑C (non‑fast) charging. Weight is ~54 g, dimensions ~7.3×3.2×1.2 cm. Audio is output via a 3.5 mm stereo jack
What Users Are Liking
➤ Incredible value for money
Retailing around US$30, users consistently state it overdelivers:
“They work amazingly well for such a cheap radio”
➤ Full‑band, SSB support
Unlike many similarly priced receivers, SSB and USB/LSB support make it attractive for ham enthusiasts.
➤ Open‑source firmware & mods available
Users appreciate the open ecosystem, with alternatives like ATS_MINI firmware by G8PTN enhancing usability and UI.
“the updated firmware makes it much less annoying to use”
➤ Portable and enjoyable
Its tiny size (<60 g) with surprisingly decent speaker audio makes it ideal for casual listening or field use
Specs For The Amnvolt SI4732 Radio
Master control: ESP-32-S3
Working mode: FM/AM/LSB/USB (note, does not support aviation band)
Receiving frequency band: HF/SW/MW/VHF
Frequency range: LW, MW, SW (150kHz – 30MHz), VHF (64-108MHz)
Screen: 1.9inch, 170*320 resolution
Supports firmware upgrade, users can also modify the system by themselves. Built-in headphone amplifier circuit, the volume is loud when listening with headphones. Brand-new system: Added screen brightness adjustment function, worry-free outdoor use; added quick access to volume adjustment page function; added power digital display function; added bandwidth adjustment function.
Is The Amnvolt SI4732 Radio Good?
This is the first time I’ve seen this radio and just messing around with it I like it already. It covers the same band that my Malachite receiver except this little guy covers Low Wav, Medium Wave, and Shortwave bands. So the frequency coverage will be 150kHz to 30MHz, and VHF 64 to 108Mhz.
And for a little radio this size, that’s all you would need when going camping or traveling in the back seat of a car RVing Hiking, and many more adventures. You can put this receiver in your pocket or backpack and many other places other than your billfold.
I like this receiver and to be honest, I think the price is amazing for this radio. So I would suggest getting this for your hoppy or travel plans. The working modes are FM, AM, Lower Side Band, and Upper Side Band.
The screen is a 1.9-inch, 170 by 320 resolution. This came in at the right time because I will be going camping soon and im taking this with me. It has screen brightness, calibration, and much more. You will get instructions on how to use it but it is small print, and a Pawer card for charging but it is a little short so I would suggest using and longer C-Type Charger card.
In my opinion, I like this radio and intend to take this with me wherever I go. See the link below for more information about this mini device.
