ATS Mini v4 Receiver Review

9 Nov 2025 · ATS Mini v4 · shortwave receiver · AM FM LSB USB · portable radio

ATS Mini v4 portable radio receiver
ATS Mini v4 portable radio receiver
Radio ATS Mini v4 receiver
Coverage AM, FM, LSB and USB reception in a small portable package
Best for Shortwave listening, casual broadcast band scanning and portable radio tinkering
Good bits Metal case, better knob, decent audio from the jack and refined stock firmware
Caveat Tiny speaker, small controls and still very much a cheap enthusiast gadget

A hands-on look at the ATS Mini v4 receiver, covering AM, FM, LSB and USB reception in a small portable radio package.

I've got a couple of these Si4732 based receivers. This is the v4, with the metal case and snazzy knob.They're super cheap and perform pretty well. This version 4 has got some shielding round the receiver an ESD on the antenna and a VCC power supply.

The new aluminium case makes the radio feel like a proper device rather than a thrown together DIY jobbie that the previous versions felt like. The new fat knob is much easier to use, and the textured knurls on the rim feel nice.
Metal Knob
Metal Knob.
The audio is clear and sounds as it should. It's a tiny little thing so the audio from the speaker is quite tinny, obviously there's no bass! The 3.5mm Jack puts out nice clean audio and sounds decent. The videos below show this. The first is a recording of BBC R4 from the 3.5mm Jack and the second is also BBC R4, this time directly from the speaker.

Audio from the 3.5mm Jack

Audio from the speaker

The firmware out of the box is more refined than the v3, so much so that I've left it on stock, maybe I'll flash something later, but right now I'm perfectly happy with it.