All of my basses have the Extender. I used 5-strings for many years, but found that a 4-string with an Extender is way more fun. There are always tunes on the set lists where I use it. Thanks!

Awesome product have purchased several from Hip Shot

Just installed the BT12 extender on my American Performer Mustang - works fantastic, just like the ones I have used on my vintage Precision and newer American Professional Jazz for years. Was a little worried that the slight increase in weight would cause some "neck dive" with the Mustang smaller/lighter body - but no issues at all!

HIGHLY recommend the Hipshot. I purchased a BT12 for my Fender American STD J-Bass. It is SUPER easy to install, look original and works flawlessly. Once dialed in, you can from E, D, to C and back and it stays in tune! So for those of you who need those low notes only occasionally and do not want to move to a 5 or 6 string bass, get a Hipshot. You won't regret it.

It took a long time to get it, but the wait was worth it. It was a present and the recipient loves it.

I use Hipshot bass extenders on all my 4 string basses. They install quickly without any modifications. They are very easy to adjust, and they stay in tune really well. I've purchased other hipshot products, all are of the highest quality and perfect fit.

Great product, Ive used Hipshot D tuners for years. I have them on all my basses, they're a must. Highly recommend if you require a lower note while playing live. I've avoided owning a 5 string bass because of the Hipshot

I have two of these. They are great. I use one in standard and another half step down (low C#). Makes the basses more versatile and does it well. They stay in tune consistently. I’ve got these on a Fender Player Series P Bass and Fender American Professional II. 11/10 would buy again. The only downside was the wait. Took a bit and a few setting and resetting expectations on ETA. Well worth the wait though. Also it’s a get out of jail free card if you forget to drop tune and the band is about to start the song.

I installed the BT12 on my Fender Jazz Elite. I’ve installed many Hipshots in the past and this was by far the easiest. Quick installation and immediate results. The hardware is second to none and always dependable. Thanks again Hipshot Products.

I bought the BT12 for my American Jazz Ultra and the look and feel is second to none. The tuner matches my bass as if it was born that way. The ability to switch my bass to Drop D is the best invention besides the bass itself. The only reason I can't give it 5 stars is due to how the tuning works. I have to tune my bass to a little bit flat of E (Not E flat), then I have to drop it to D and back to E in order for it to be in tune. It has to be a one shot thing because if you adjust it a little it goes flat. The other reason I can't give it 5 star is due to the time it took to even get the thing. The customer service was good and they let me know about the delays along the way but it still took a while.