New Tuning keys for a 7 strings Schecter ?

I don't know about hysteresis, or whatever you call it, but I've installed sperzel locking tunes in my schecter C7 blackjack and they work great (Back then, though, I had to drill the hole a bit in one of them for a .070 string to fit, I don't know if that's still the case). This guitar has amazing tuning stability, although I can't say for sure if it's because of the locking tuners, it was also pretty good with the grover tuners I had originally.
 
The ones I got look like this

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Don't put too much faith on the tuners though. I don't think there's a point in spending $250 on tuners (unless they're custom or something). With regular locking sperzels you should be fine. They go for around 90euros on thomann.
 
I've tried Grovers, Planet Waves, Gotohs (standard, not 510 series), and JinHo (cheap chinese maker... GFS sells them, and you can find them on eBay too, I believe they're the same maker that produced the generic non-locking cheapo tuners that came originally in my non-Prestige Ibanez SZ).

Grovers (non-locking 18:1's) are super smooth and super stable. They're not hard to come across for cheap on eBay too.

Gotohs (non-locking, non 510 series) on my Ibanez Prestige RGA are super stable too, but they're not as smooth as Grovers. These have a 16:1 ratio. They definitely look/feel super super well-built with great quality, tho, perhaps a bit mores than the previous.

Planet Waves locking tuners are smooth and stable too, and the auto-trim feature is super nice. I honestly thought Grovers were a tad smoother (on paper, they have the same gear ratio, tho), but just by a hair.

JinHo locking tuners have a VERY smooth feel to them (19:1 ratio), but they're definitely not nearly as stable as any of the previous tuners I mentioned. I found I had to re-tighten the thumbwheel quite frequently. Yeah, downside to cheap tuners, lol.

None of those have the hysteresis problem you mention. I did notice the problem on the cheapo generic tuners that came originally in one of my Ibanez's, so I do know what you mean.

All of those except for the JinHos get my recommendation, TBH. Both Grovers and Gotohs have locking versions too. However, if I were to get new tuning heads, I think I'd go for Gotoh 510's with the 21:1 gear ratio.


I see two downside to Sperzels, personally. I don't doubt they're very well-made, but, on paper, their gear ratio is only 12:1, which is kinda low. They're also not a drop-in replacement for like any guitar that doesn't come stock with them... :(