Kershaw Amplitude 2.5

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Nov 28, 2012
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76
Ladies and Gents,

This is a quick review of a knife I personally have been waiting for going on 10 months now. The Kershaw Amplitude 2.5. Mind you I'm not a writer, won't be winning any awards or getting published, but this is my initial views upon receiving this knife.

Announced at at the beginning of the year, I first saw this knife in videos outlining new products seen at Shot Show for 2014. Kershaw did not reveal a release date, but when I saw the clean look, I figured it might be a nice cheap edc knife with a little class to its look. Something I wouldn't be worried about losing as it wouldn't break the bank. Kershaw priced it at $39.99.

Here's the picture released on Kershaws site so you can take a look at what I saw.

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Extremely clean, no major flash, looked to be a nice slicer with it's small, thin blade.

Their specs were:

Flipper
SpeedSafe® assisted opening
Frame lock
Reversible pocketclip (tip-up/tip-down)
Designed by Todd Rexford
Blade: Stainless steel, machine satin finish
Handle: 410, titanium carbo-nitride coating
Blade length: 2.5 in. (6.4 cm)
Closed length: 3.5 in. (8.9 cm)
Weight: 2.6 oz. (73.7 g)

As you can see it's very light weight which was to be expected of a small knife like this. I was willing to take a leap of faith, as most knives Kershaw releases are quite nice despite their low cost and in this ones case, production being outside the US. China in the case of the Amplitude 2.5.

I pre-ordered this on January 24, 2014 from BladeHQ with no telling of when I would receive it. The price was $5 to pre-order, plus $5.99 for shipping. I checked back every month, hoping it was finally time. My carry rotation isn't huge, but this one I felt really had a place. It's refined. It reminds me of a Sebenza in some ways. (Though I haven't owned one... I know, stupid me.) Finally on Monday, November 10, 2014 I received the e-mail from BladeHQ that they were in stock. The remaining balance of $19.95 was due, and with my ok, it would be charged and shipped that day. An overall price once all said and done of $30.94. Not too shabby I gave them the yes and away it went!

Today, November 13, 2014 there it was in my mail box. (Tuesday being Veterans day accounted for the extra shipping time.) I opened it with the excitement of a child on Christmas morning. Almost a year waiting for this. It's cheap, yes, but that's what I wanted. A cheap knife that didn't look too cheap. While sitting at my mail box with the car running, I gave the knife a once over. The handle looked good. The flipper, well the flipper sucked. The knife wouldn't fully open. :o Feeling a little saddened by the less than spectacular opening performance of the knife, I put it in my pocket (Noting the extremely tight pocket clip actually being difficult to slip over the pocket of my Carhartts.) and went to pull in the garage.

Once I was inside and the dog was greeted and the girlfriend given a hello, I went back to the knife. I tried the flipper about 15 more times and it's locking open approximately 90% of the time. I'm hoping it just needs some break in? Or perhaps I'll break it down and give it a cleaning and see where it goes from there. After messing with the flipper I inspected it more closely under direct light. I took note of the clean scales, and the nice back spacer, which is black in color. Also of the textured "notches" on the pocket clip. The appearance was spot on. The frame lock is quite strong as well. Perhaps now that I think about it, that's why there's the delay in lock up.

Next up I started looking at the blade. It's your typical Kershaw offering. 8Cr13MoV with a satin finish. 2.5" in length with a hollow grind. I noticed the tip, well, maybe about the first half inch from the tip was very sharp. The rest of the blade however? Not. You can feel a significant difference in sharpening angle comparing the tip to the rest. The problem here is it just wasn't sharpened correctly. That half inch from the tip is shaving sharp from the box and the rest just so poorly sharpened that it is, dare I say, dull. I can slide it across my arm effortlessly. It doesn't catch on anything nor cut. Other than that, lock-up is SOLID. No movement at all. When closed, the blade isn't centered, but there's no rubbing. visible space on both sides, but in a knife this cheap, I personally don't feel like it's a big deal.

I touched base a bit on the size of this knife being very small. It's overall length is 6". Blade length as stated is 2.5" and the handle is 3.5". My currently EDC is a Benchmade/Ritter Mini with M390, Wilkins Titanium grips, and rounded out with a Benchmade Deep carry stonewashed pocket clip. Side by side the blade is very close in length. 2.5" vs 2.88" on the Ritter. The handle though is MUCH smaller. My pinky finger slides off the Amplitude, where-as I get a full grip and am very confident with the Mini-Ritter. I feel the Amplitude does exactly what it should in this case. A smaller knife, easily carried, and I'm sure for your daily carry needs, envelope and box opening, and other basic needs, it's just fine. You won't be batoning with this or using it for anything heavy duty obviously. In my pictures section below, I'll include a side by side of the Amplitude and my Mini-ritter so you can see the size difference.

Next up I grabbed a piece of paper, because, well, a knife review or test isn't done with at least some sort of baseline, right? The tip easily cut through the paper in small amounts. The rest, I'm sure you can guess. Not a chance. As soon as I'm done writing this I'm going to try sharpening it on my Sharpmaker. It's going to take a quick minute though since once sides angle is way off. I almost thought of using my Ken Onion Work Sharp, but I don't think I want the convex edge on it. It's just so thin, that I think it'll be a sweet little slicer with a good sharpened edge.

This review really didn't go the way I wanted it to. It sounds mostly like complaining. I think part of the problem is Kershaw just had so many offerings this year, as well as their typical stuff, that this was probably more of a back burner knife and not a major contender in their line-up. The knife has character thanks to Todd Rexford. It's a real looker and the groundwork is there for it to become an excellent light weight, classy looking knife that comes at a very low price point. Something I really think is needed in the knife market. With a little fine tuning this knife has some great potential. If you don't mind having to put a little work into the knife from the start, this might be for you.

And finally, some pictures. (Taken with an iPhone... Sorry!)

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It's actually a decent looking little knife! Sorry to hear that the sharpening guy was out to lunch that day, though.
 
Thanks for the review. I've been waiting for this knife most of the year too. Glad to hear you've gotten yours. I spoke with BladeHQ today and the rep said they've only filled about 50 or so of the pre-orders and are awaiting another shipment until they can fill the rest. Sick of waiting I canceled my preorder and bought thru Amazon instead, there's still 7 vendors with them in stock. Received my tracking number this morning. Pretty disappointed with the way BladeHQ handled this. Selling more pre-orders than they can fulfill isn't good business, but in their defense its the first time I've ever had a problem with them. Had there been a little more communication, say an email letting us know they were on their way, I probably would've just waited. Instead they had my money the last 7 months and kept silent.
 
Got mine today & I'm a little disappointed. I agree with Mike_P in that the Amplitude has the makings of an awesome budget EDC, but the fit & finish is lacking in some places. I'm not sure what to call it, but the worst part is the edge above the lock bar. It's sharp & the machining is uneven & the bottom of the edge isn't finished. The fact the bottom of the edge isn't finished might not be a huge deal if the edge was straight (from the pic, looks like his might be a little rough, hard to tell for sure, but mine is much worse). Another issue on mine is the spacer (has a little sway in it). The last thing is what looks to be a very rough weld job inside the knife (mostly hidden unless you look for it). Those last 2 things are a little nitpicky, but the rough machining on that edge really puts a damper on this knife. Kershaw has a winner here if they clean things up. Charge me a few bucks more if you have to. That would still keep the street price under $30.

It's classy looking, & although the small flipper takes practice, the blade flies out smooth. Lock up was tight & the blade was centered. I'm disappointed overall, but the Amplitude has great potential. I'm curious if there will be more reports like mine. I have a feeling the rough machining will be an issue until it's corrected. They really need to finish the surface under that edge, though. No reason not to. That alone would clear up the rough machining.
 
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FYI, after further inspection, the top edge of the lock bar is uneven, as well, & like the other problem area, it doesn't have a finished surface (on top of the edge). BTW, much like Mike_P, the Amplitude didn't come nearly as sharp as my other Kershaws. That certainly can be fixed, though.
 
It's actually a decent looking little knife! Sorry to hear that the sharpening guy was out to lunch that day, though.

The sharpening sucks, but because that's something I can fix I can sort of look past it. Being that it's SUCH a cheap knife, I don't mind putting a little elbow grease into it. I think my expectations were just a bit higher than normal given that Kershaw NORMALLY does such a good job with their budget knives.

Thanks for the review. I've been waiting for this knife most of the year too. Glad to hear you've gotten yours. I spoke with BladeHQ today and the rep said they've only filled about 50 or so of the pre-orders and are awaiting another shipment until they can fill the rest. Sick of waiting I canceled my preorder and bought thru Amazon instead, there's still 7 vendors with them in stock. Received my tracking number this morning. Pretty disappointed with the way BladeHQ handled this. Selling more pre-orders than they can fulfill isn't good business, but in their defense its the first time I've ever had a problem with them. Had there been a little more communication, say an email letting us know they were on their way, I probably would've just waited. Instead they had my money the last 7 months and kept silent.

This was my first pre-order I had done through BladeHQ, but certainly not my first order. I'm happy with the speed they contacted me once they arrived and the speed at which it was on its way to me. If I had the same experience with them though, I would definitely be dissapointed as well. It certainly doesn't sound like the norm for them to over sell like that.

Got mine today & I'm a little disappointed. I agree with Mike_P in that the Amplitude has the makings of an awesome budget EDC, but the fit & finish is lacking in some places. I'm not sure what to call it, but the worst part is the edge above the lock bar. It's sharp & the machining is uneven & the bottom of the edge isn't finished. The fact the bottom of the edge isn't finished might not be a huge deal if the edge was straight (from the pic, looks like his might be a little rough, hard to tell for sure, but mine is much worse). Another issue on mine is the spacer (has a little sway in it). The last thing is what looks to be a very rough weld job inside the knife (mostly hidden unless you look for it). Those last 2 things are a little nitpicky, but the rough machining on that edge really puts a damper on this knife. Kershaw has a winner here if they clean things up. Charge me a few bucks more if you have to. That would still keep the street price under $30.

It's classy looking, & although the small flipper takes practice, the blade flies out smooth. Lock up was tight & the blade was centered. I'm disappointed overall, but the Amplitude has great potential. I'm curious if there will be more reports like mine. I have a feeling the rough machining will be an issue until it's corrected. They really need to finish the surface under that edge, though. No reason not to. That alone would clear up the rough machining.

My flipper is now working correctly after being played with for a bit and cleaned up. That edge above the lock bar is definitely poorly done. Its got a funky ridge on it and certainly isn't flat. I'm not quite sure WHAT they intended to do with that, but if it's intended to be leveled off, it's in a location where it wouldn't be difficult to do. Unlike yours though, mine isn't sharp. But again it's something that just shouldn't be given Kershaws typical quality.

In regards to the spacer, mine is rock solid. No sway or movement at all. I took a look inside to see about the weld spots you saw. Mine is actually pretty good. No discoloration or anything but what I did notice was an insane amount of... packing grease or something. Factory lube maybe. I cleaned it all out but now I'm thinking a full dis-assembly is needed.

Like you, as I had said in my review, Kershaw could have a really great cheap knife if they just clean it up. One thing is for certain, it sure sharpened up pretty well!
 
The sharpening sucks, but because that's something I can fix I can sort of look past it. Being that it's SUCH a cheap knife, I don't mind putting a little elbow grease into it. I think my expectations were just a bit higher than normal given that Kershaw NORMALLY does such a good job with their budget knives.



This was my first pre-order I had done through BladeHQ, but certainly not my first order. I'm happy with the speed they contacted me once they arrived and the speed at which it was on its way to me. If I had the same experience with them though, I would definitely be dissapointed as well. It certainly doesn't sound like the norm for them to over sell like that.



My flipper is now working correctly after being played with for a bit and cleaned up. That edge above the lock bar is definitely poorly done. Its got a funky ridge on it and certainly isn't flat. I'm not quite sure WHAT they intended to do with that, but if it's intended to be leveled off, it's in a location where it wouldn't be difficult to do. Unlike yours though, mine isn't sharp. But again it's something that just shouldn't be given Kershaws typical quality.

In regards to the spacer, mine is rock solid. No sway or movement at all. I took a look inside to see about the weld spots you saw. Mine is actually pretty good. No discoloration or anything but what I did notice was an insane amount of... packing grease or something. Factory lube maybe. I cleaned it all out but now I'm thinking a full dis-assembly is needed.

Like you, as I had said in my review, Kershaw could have a really great cheap knife if they just clean it up. One thing is for certain, it sure sharpened up pretty well!

After you mentioned the grease, I took another look & sure enough, it's a glob of grease instead of a funky weld. I've never seen anything like that which is why I thought it was something else. It essentially makes you disassemble which shouldn't be necessary on a new knife. BTW, you may have read my comment wrong, but mine didn't come very sharp either.

Anyway, I don't understand having a Rexford design, but taking shortcuts like not finishing the edges. I get that it's a budget knife, but if you aren't going to finish off the inside edges, at least make them straight. Not hard to do with today's manufacturing capabilities. As far as my spacer, it's solid, but is slightly crooked on one end. I love Kershaw, but they need to get the Amplitude squared away (especially the machining problems I mentioned). It's a classy looking blade. It would be a shame to waste its potential.
 
I was so excited to see the Amplitude finally in stock that I ordered two.

The price is right and I've not had the best of luck lately with either Kershaw or ZT products. In terms of QC, they are slipping, at least according to my dozen or so most recent orders. I figured that ordering two would give me a better chance for success.

Lockup on one Amplitude is about 80 percent and the other is close to 100 percent. Neither blade is exactly centered but they aren't too bad, either.

That doesn't seem to effect flipping: While one Amplitude seems smoother than the other both flip easily.

Both blades are nice and sharp and the grinds are good.

This knife is smaller than you might think. IMO, it deserves more of a deep-pocket clip. But it's light enough to just throw in your pocket.

I like the Amplitude, but then I like under 3-inch folders. It seems just a bit unfinished but these are nits.

The Amplitude is a nice backup knife or a good utility folder all on its own. Recommended.

Now where's that Nura 3.0 I've also been awaiting!
 
I bought a cryo a couple years back when they first popped up on Amazon, there were many sharp edges including the one mentioned around the lockbar, also, only half of the knife was really sharp, and even some of the cutting edge way visibly unfinished, the last 1/2 inch of the blade toward the handle was not brought to an edge on a belt, it was still squared off and flat. At that point I decided kershaws Chinese offerings were not worth the money. I have a few skylines and a leek and a blur and a couple zt's...nothing Chinese though...I gave them all away. my cheapest knife now is a flash2 Taiwan made I think...razor sharp and well put together.
 
The Amplitude was one I was really looking forward to, so this thread had me kind of worried, because when I got my CQC-1k it was a lemon. The centering was WAY off, where the blade was rubbing against the liner, and the pivot screw couldn't be tightened. It just spun freely.

I just got my Amplitude yesterday, and much to my relief, I got a decent one. The lockup is 80% and the centering is just SLIGHTLY off. Other than that, it is pretty good. The lockup is SOLID and it is sharp. I'll be carrying this one a lot. At this price, I will get another one soon to stash, as I will be using the hell outta this one.
 
The Amplitude was one I was really looking forward to, so this thread had me kind of worried, because when I got my CQC-1k it was a lemon. The centering was WAY off, where the blade was rubbing against the liner, and the pivot screw couldn't be tightened. It just spun freely.

I just got my Amplitude yesterday, and much to my relief, I got a decent one. The lockup is 80% and the centering is just SLIGHTLY off. Other than that, it is pretty good. The lockup is SOLID and it is sharp. I'll be carrying this one a lot. At this price, I will get another one soon to stash, as I will be using the hell outta this one.

The edges around the lockbar were finished off nicely (both the bottom edge of the scale above the lockbar & the top edge of the lockbar itself) & weren't bungled? All the ones I've seen had that issue, but obviously I haven't seen all of them.

I hope they got that fixed because I like the knife otherwise (considering the price). It's an outstanding little budget EDC assuming acceptable fit & finish. I'd love to get another if I knew those edges would be finished off (or if not finished off, at least straight). I'm just picky enough that it's a dealbreaker if Kershaw doesn't get the issue resolved.
 
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Thanks for the review. Nice looking knife. I love Kershaw blades, but will it come in G10? I held out for the G 10 version of the Cryo and was not disappointed.
 
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