Pyramid PS7KX 5A / 7A Peak Linear Power Supply

Very good quality

Very nice unit does what it is supposed too

This power supply works great. If you need a power supply to power small things this would be a great choice

Straight up power supply. Quality built. Not too big. Easy to set up. Low hum.

I use this as an alternative to 12v battery for testing, so I can't comment on longevity or continuous use, but it seems well constructed. It is reasonable heavy which is perhaps a good thing.

Bought this for a 25 watt radio base station. Solid. Running it for three hours, I never heard the fan at all. Will update as needed but so far, this was a perfect beginner's base station power supply.

I bought this product to test out a 12 Volt siren.

I use it in the garage and works great it gets pretty warm watch what set it on

Fast shipping works as advertised

Works well for running my mobile CB as a base, power supply provides ample power with no issues.

I use it to charge car batteries and run an Alpine stereo/7bndgraphicEQ/amp in bedroom.

PS7KX works very well as an external power supply for my shortwave receiver. Resolved an AC hum heard in headphones from the shortwave receiver’s internal power supply.

Does exactly what I need and the price is very good. I've already used it quite a bit and see nothing at all that would indicate poor performance for years to come. simple, high-quality 12v power supply. I would say that my needs mostly involve testing circuits and not so much for powering devices for long-periods, so I can't speak to that but wouldn't have any doubt it would cover that need all the same

Most reasonable priced unit for a bench supply. Was delivered sooner than expected. Have only used two times so can not comment much on durability. Seems a very solid, well designed unit. Would have liked more options as to connecting to units power output knobs.

Power supply arrived quickly and on time. Replaced an old power supply for a radio used in our hangar to communicate with arriving/departing aircraft. Can't attest to durability or dependability as of yet but it is working great so far.

This product is simple and effective, it does exactly what it's designed for and suits my needs exactly. What makes it really good though, is the price. It doesn't break your wallet and from the way it looks like it's made, should last a good long time.

Great little power supply. Worked perfect for using my mobile CB in home. Arrived 2 days early on top of that.

In my option. This is a very bad power supply.As with other Amazon reviewers, this power supply “does not” have a fan in it as advertised. This, I think starts the problem. While in use, I could not get it to reliably work with currents over .6 amps. Even working at just .6 amps, the unit was almost smoking hot at the rear heat sink/power transistor and back of the case (you could smell it).If I pushed the current flow higher than .6 amps, the current and voltage readings would fluctuate and eventually the unit would shut down to high temperatures. This did not take long to happen.I would not use this power supply at any current draw. In my option, it is a fire waiting to happen. Also, the power readings were disconcerting. Maybe it would be better if it had a cooling fan, as advertised.I returned this power supply to Amazon. I then ordered the Mr. Meter DC Power Supply PS-305DM from Amazon (see my review). The Mr. Meter is a far better buy.

In a time when most products are made of plastic and are made cheap it is refreshing to buy an item that is actually made of metal and made to last. This is a simple product to hock-up and use and looks good setting on my shelf with my radio and antenna trimmer which also have metal cases. This product does not send a signal to the radio like a lot of wall wart power converters.I had read the other reviews of this product which were very favorable and that is the reason that I ordered one.I am very satisfied with the appearance and function of this product and I am happy to recommend it to others that need a power supply.

I have been a CB and HAM radio operator for over 40 years. I've used a number of power supplies, from the big ones (35A) to the ones that you would buy at Radio Shack to power a 4 watt CB. I needed one that would efficiently run a 20W transceiver. This amp is rated at 70 watts. You never want to drive a power supply more than half of it's rated limit. It keeps it cooler, and will prolong its life indefinitely. It also gives you plenty of reserve for when you're whistling into the microphone, or otherwise pushing the limits of your transceiver. What I can tell is that this is a well-built power supply. It runs cool and quiet. For the radio enthusiast, or hobbyist who needs to run something that draws 30W or less, this is a great little unit.