I’m kinda late to the party on this one, but I’m a Rumble user that’s fully digging it. I use the OP-Z to play live and generally on a table… but when using it, I keep my fingers on it to feel the metronome pulse to keep me in time while cooking up a jam from scratch in a live situation. Works well for me. Also just dig feeling the bass when I hold it. 
Pretty useful as a metronome for me.
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Ever since the gyro LFO, I’m holding mine a lot more. I may try a rumble pack.
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totally worth it… imo
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never heard of this company before so might be shady, nice price though! https://kytary.co.uk/teenage-engineering-rumble/HN208443/?gclid=EAIaIQobChMIl93PoJ6e5gIVibTtCh27PgSiEAQYBSABEgJ2LPD_BwE
DON`T use, seems like a another dummy scam shop (going off trustpilot reviews anyhoo).
Not a scam shop but not based in the UK as the website makes them appear. Czech company and as such communication is likely to be difficult in case of errors. Pay with paypal or credit card and you’ll be fine.
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bought one from Juno, but you`re right, not a scam website, just one not worth risking on.
Would absolutely rather buy from Juno as that’s where I bought my Novation Circuit and the service is spot on.
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Had the unit in for a few weeks now and it really is fantastic, the effect being so much better than i had anticipated. Nice one TE, on a solid working product thats well priced. But...i am curious about whats actually going on inside the mod. Moving parts=wear `n tear…Does anyone know about the longevity of Haptic devices?
Think of a sub-woofer without its cone. It has moving parts but will last forever unless the coil wire fails, which is very unlikely.
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Get it, and then you may start holding it here and there while you do the low end (;
do you really think this is a fair price? 89$
It rally is just a tiny thing with only a few moving parts and the po 33 seems like so much more engineering and design, idk.
I would have def gotten one if they were around 39$ but 90$ for a little thing that vibrates seems like a huge stretch, given what TE also has for sale at this price.
I almost bought one the other day, thought it might be a nice xmas gift to myself, ha
Well, the rumble is a cooperation between TE and lofelt haptics, who are specialised in making audio-haptic gear. It’s a bit more than just some moving parts and it’s not just vibrating somehow, but in a way extends what you hear by making you feel it. Nothing your phone could for example do.
Of course it’s not a typical bargain, but you get a piece of interesting technology, which has not been integrated in an instrument before. Right now I would pay extra money for each and every synth that would come with that technology, since it’s very satisfying to feel it. It gives you the feel of an acoustic instrument that reacts to how it’s played.
On the other hand: yes, it does not improve the (musical) functionality of the op-z. So it’s not for everyone.
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You should be the spokesperson you just made a better claim for its validity than i’ve ever heard before 
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Fact: you can’t unrumble.
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TE and fair price dont go hand in hand, but it is worth having and dont regret buying it. Bought it for xmas pressie to me…beats the socks i was gifted by my tight so-called loved ones:)
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Just letting you guys know I had my OP-Z with rumble pack on level 2 of 4 on my desk in my studio, my legs were against the table legs and the entire table was rumbling. I could feel it throughout my legs and through my feet to the floor. This thing rocks especially if you don’t have a woofer, oh but if you do happen to have a sub and put these two together, resonance is magically delightful!
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Another cool thing: I often like messing around with the OP-Z while sitting on my bed for comfort. If I have it just sitting on the bed in front of me, I can easily feel the low end translating through the mattress with the rumble pack.
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I think it’s really cool and makes the OP-Z an even more unique device.
As far as utility goes, I think the silent metronome and the haptic feedback of bass frequencies adds quite a lot. The silent metronome is very usefull while transitioning from or playing around with patterns that don’t have any percussive tracks running.
And haptic feedback helps with mixing. A constant rumble means your mix will sound muddy in loudspeakers, while solid pumping indicates a tighter mix. That’s quite useful when you’re making music in a noisy place such as on the bus or in a café.
So all in all I think it’s a solid addition even if you don’t typically hand-hold your unit. But of course, if your mixing skills are superior to mine (which they probably are) and your internal metronome runs like an atomic clock, I’d say you’ll probably end up think of it more as a gimmick than as a tool. It’s a very cool one at that though.
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