Down4Sound D4S AMPLIFIER Tuning Tool

Description 20 Reviews Description Down4Sound's & Car Audio's 1st Ever Amplifier Tuning Tool with Built-In LED's! This aluminum installation tool is compact in design allows you carry the tuning device ANYWHERE without getting in the way PERFECT FOR on the spot adjustment for ALMOST ANY Amplifier, Crossover, and DSP. Two interchangeable fixtures with six different sizes for Phillips and Flatheads Insert Drivers. The D4S Amplifier Tuning Tool has a Bright LED Light allows the Installer to see what he or she is doing while tuning an Amplifier, Crossover, DSP, and MORE! *IF YOUR TOOL DOESN'T LIGHT UP UNSCREW THE TOP OFF OF IT AND MAKE SURE THE BATTERY PROTECTOR IS REMOVED TO ALLOW CONNECTION. View All Close 20 Reviews 5 D4s tool Posted by Chris howell on May 06, 2025 Love this thing. Easy to use. Good amp adjuster 4 Amplifier tuning tool Posted by Jeremy lee on Jul 28, 2024 It's a very handy tool when getting into tight spaces to tune amps. Would be nice if the light actually worked(yes I rem9ved to battery blocker). 5his light issue is the only thing stopping from rat8ng 5 Starz. Definitely recommend to my friends. 5 A.T.T. Posted by Worldwide Team Bass Cat on Apr 12, 2024 This is a great product. The craftsmanship is great the tips fit great in the amps crossover pods. And having the different tips is nice so I can use them on some of my other equipment. And even if my light does not work lol and yes I took the white plastic ring out of the way ? it is still a great product and been in Car Audio since 1988 never had a light tuning amps so I don't need one now ? 5 Handy tool Posted by Jeremy Nordgren on Jan 01, 2024 Handy tool with a light for adjustments 5 Tuning Tool Posted by Edward Dobson on Feb 17, 2023 Fast shipping will buy again 5 Great tool Posted by Jordan P on Mar 17, 2022 Bought this awhile back and it has been my go-to amp tool. Love the led light, very convenient! 5 Amplifier tuning tool Posted by Robert Welling on Jan 10, 2022 I'm writing another review about this tool because I had said in my previous review that the light on the tuning tool did not work. Afterwards, d4s called me and I told them that I tried everything to get it to work but had no luck. They sent me a new one and it works great. Thats what I'm talking about. Great customer service. I'm a loyal d4s customer and I recommend them to everyone. Thanks d4s, your the best 5 tunnig tool Posted by Alan ray on Feb 19, 2021 the best thing since sliced bread 5 Nice tool Posted by Vic Salazar on Dec 04, 2020 This is a very good tool to have buy it you'll like it .... 5 very handy tool Posted by Todd Self on Sep 11, 2020 this item is a handy and well constructed tool. made of durable aluminum instead of cheap plastic. the light is plenty bright and perfect for low light conditions. another great thing about this tool is that the batteries can be replaced. well worth the price. Next View All Close