Pyramid PS9KX Universal Compact Bench Power Supply-5 Amp Linear Regulated Home Lab Benchtop Converter w/ 13.8 Volt DC 115V AC 70 Watt Input, Screw Type Terminal, 12V Car Cigarette Lighter
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Availability:
In Stock.
Arrives
Saturday, Apr 18
Style: 5 Amp
Pattern Name: Power Supply
Features
- CONVERTS AC TO DC: The Pyramid Bench Power Supply features a linear/regulated design. Provides convenient and reliable AC-to-DC power conversion (12V DC) w/ constant source of DC voltage. Works w/ cellular phones, CB radio, scanner, HAM radio, etc
- SCREW-TYPE TERMINALS: The features universal hardwired screw-type connection terminals that ensure compatibility with a wide range of devices, equipment, and components. That is used for component and device equipment testing, operation, and performance
- PLUG-IN OPERATION: The simple plug-in operation provides a constant source of DC voltage, allowing for quick and consistent power conversion. This Switch-activated power control eliminates the need for an external battery or additional power sources
- SHORT-CIRCUIT PROTECTION: Equipped with/ built-in electronic overload & short circuit protection to ensure the safety of the operator & any connected electrical device. Also, fuse protected w/ auto reset. Perfectly safe for tabletop or desktop placement
- BUILT-IN COOLING FAN: This power converter features a cabinet heatsink and a built-in cooling fan to prevent the device from overheating. The Constant amperage is 5A and the surge is 7A w/ power output of 13.8V DC and has 115V AC 60Hz 70W power input
Description
The Pyramid Car Audio PS9KX 70 Watt 5 Amp Power Supply provides convenient and reliable AC to DC power performance. Universal hardwired screw-type connection terminals are hassle-free and ensure compatibility with a wide range of device equipment and components. Simple electronic plug-in operation provides a constant source of DC voltage, allowing for quick and consistent power conversion. Switch-activated power control eliminates the need of an external battery or additional power source—while the built-in electronic overload and short-circuit protection ensure safety of the operator and any connected electrical devices. The Pyramid Bench Power Supply makes for a great addition to any hobbyist work desk or equipment testing station.
Brand: Pyramid
Color: Black
Material: Metal
Item Weight: 4.4 Pounds
Connector Type: Screw Terminal
Brand: Pyramid
Series: PS9KX
Item model number: PS9KX
Item Weight: 4.4 pounds
Product Dimensions: 7.5 x 4.9 x 3 inches
Item Dimensions LxWxH: 7.5 x 4.9 x 3 inches
Color: Black
Manufacturer: Sound Around
Is Discontinued By Manufacturer: No
Date First Available: August 25, 2005
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Apr 18
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: 10 Amp Cigarette Plug
Pattern Name: Power Supply
I'm using this power supply with my Uniden SDS200 digital scanner. ($700 dollars) Was a bit worried about fan noise was going to destroy the receiver's reception. But actually I was pleasantly surprised how the scanner's reception was actually enhanced. I noticed lower background noise and cleaner signal reception as a bonus. The power supply runs very quiet with any noise barely detectable to the ear. After several hours the unit is only slightly warm on top. Looks like smooth sailing ahead. Just an added note: I'm using the DC power cord (black and red wires) as my power input to my scanner instead of using the AC wall input. Seems the scanner likes the DC power cord better. Bob.
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Reviewed in the United States on November 25, 2025 by Bob
Style: 10 Amp Cigarette Plug
Pattern Name: Power Supply
This is a big boy. it looks like the normal small power supply in the picture but trust it is double the size triple the weight. i was very happy that it is heavier duty.
Reviewed in the United States on February 11, 2026 by MAB
Style: 5 Amp
Pattern Name: Power Supply
Have it operating a 3.5 amp load 24 hours per day. It runs warm, but provides good, clean, regulated output. No problems.
Reviewed in the United States on January 31, 2026 by Northe K. Osbrink
Style: 10 Amp Cigarette Plug
Pattern Name: Power Supply
Works as well as more expensive techy brands. And it's not a knock off of something else.
Reviewed in the United States on February 4, 2026 by Hondaddy
Style: 5 Amp
Pattern Name: Power Supply
First, let me state that I designed power supplies many years ago. So I know something about power supply specifications and testing. The documentation with the power supply states the following specifications: output 13.8 V +/- 0.3 V, ripply 150 mV rms (424 mV p-p) at 5 amps continuous, regulation 2.5% I purchased this power supply to provide 13.8 V at up to about 3 amp. I use this for low power amateur radio equipment. So I needed the low noise of a linear power supply, but usually don't need more than 1 to 2 amps. As a 3 amp power supply, this performs very well. Output voltage varied from 13.75 V at no load to 13.65 V at 3 amps, and the ripple (noise) never exceeded 20 mV p-p. Above 3 amps, the output begins to drop and ripple increases rapidly. At 4 amps, the output was 11.8 V and ripple 500 mV p-p. I did not test the power supply above 4 amps, nor did I test the over-load and over-temp protection. If you're looking for a true 5 amp power supply, you may want to look for something else. Pyramid makes a 12 amp linear power supply, which may be a better choice for those users.
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Reviewed in the United States on June 16, 2019 by Driphder
Style: 5 Amp
Pattern Name: Power Supply
Bought this in 2018. I may have reviewed it right away. So this is an "After Six Years Of Use" review. I wanted to mount it in an ammo can, so I moved the fuse to the front, and moved the rectifier and heat sink to the side of the unit. Then I mounted it in an ammo can. I had to file off the top of the fuse holder and remove some plastic from the + and - connectors on the front panel; I had to do that in order to close the lid of the ammo can. I added various cords and connectors for a wide variety of applications. I paired it with a VHF/UHF radio in another ammo can (with a battery pack) for a great disaster prep radio combination! I've been using this setup as a VHF/UHF base station on top of my HF radio cabinet for 6 years. No complaints, no issues. It's been a fantastic little power supply, and I've even used it to power my Yaesu FT-817 HF transceiver on many occasions. Two Thumbs Up!
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Reviewed in the United States on August 2, 2024 by actionmom actionmom
Style: 5 Amp
Pattern Name: Power Supply
This is a review of the Pyramid PS9KX 12V, 5amp Power Supply. Made in China but built like a tank (the housing is made of steel as you might expect. It has a 12V Cigarette lighter receptacle plus a set of screw terminal (+/-) connectors. I use it mainly to program settings for dashcams b/c I hate having to dismount them or break my neck to view them on windshields - usually in either very hot or cold vehicles at that. It's really nice to do that programming while sitting on my living room sofa or at my workbench. Of course, you can use this unit to charge/run any 12V devices, with the proper connector. The receptacle and screw terminals have an advertised output of 13.8V (I verified my output at 13.78V on both - close enough). The power cord on my unit is 51 inches long and is the only shortcoming (no pun intended) of the unit - I'd like to have had an 8 foot cord; otherwise, I rate this power supply as a definite BUY. The manufacturer boasts that this power supply has: 1) over temperature protection, 2) short circuit protection, and is 3) fused. It runs on 115V AC 60Hz and draws 70W. It’s rated at 5A constant, 7A surge. It has a nice heat sink on the back side which appears to be aluminum. It has beefy, rubber feet to hold it steady. My unit weighed 4lbs. 3oz (1.9kg), excluding the power cord.
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Reviewed in the United States on November 1, 2019 by JW JW
Style: 5 Amp
Pattern Name: Power Supply
I just got it so maybe I'll update later.
Reviewed in the United States on February 4, 2026 by Ron Cox