Teenage Engineering PO-33 K.O.

Micro Sampler

  • Integrated microphone for sampling
  • 40 Seconds sampling time
  • 8 Melody sample slots
  • 8 Drum slots
  • 16-Step Sequencer
  • 16 Patterns
  • 16 Effects
  • Lock Tab write protection for pattern
  • Line in and output 3.5 mm jack
  • Integrated speaker
  • Animated LC-display
  • Power supply via 2 standard micro batteries (AAA)
  • Battery life: Up to a month, 2 years standby
  • Automatic shutdown
  • Jam Sync
  • Integrated alarm
  • Bent wire stand

Further Information

Polyphony 1
Internal Storage Yes
Storage Medium Flash Memory
File Format Own Format
Time Stretching No
Effects Yes
USB-port No
Analogue Inputs 1
Analogue Outputs 1
Digital Outputs No
Display Yes
Sequencer Yes

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82 Customer Ratings:
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4.6 /5
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A True Knockout
m-train, 24.06.2020
This is the second po-33 I have purchased. I use it for quick sampling sounds out in the world and to create music on the go.

This device is one of the most fun I have ever used. It's lack of instructions can make it seem like it has a steep learning curve but once you understand the basic functions it is only a matter of time before you will become more skilled and learn all the tricks you need to create music.

The only downside to this device is that in order to make a backup of the samples and patterns you have created you need a way to record a stereo signal. You can easily record the audio output of the device using a mono interface if you just want to edit your music in a DAW or simple software like Audacity.

This remains one of my most heavily used and enjoyable instruments. I love the po-33 and cannot recommend it highly enough. A must have for anyone interested in sampling or mkaing music on the go.

I purchased some rechargeable AAA batteries to power my device so I would not have to use disposable batteries repeatedly.
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Cost, 21.03.2018
Since I found out about the pocket operators series, the one that I always wanted was a sampler, teenage made it so I bought it.
First of all, if you're looking for a sp 404 or a mpc for a fraction of the price, just forget about it, you're going to blow 100 bucks(its monophonic, 40 seconds of sampling time etc...).
This is a great machine, you can record through the built in microphone and then you can cut, pitch and throw a low/high pass filter to the sample. After that you can sequence all the sounds and you can chain sequences together in order to create a song or simply make a 16,32 etc step sequence.
Good: The effects are incredibly fun to use. After creating a sequence you can create a performance by using them.
Bad: the samples are divided in racks and you can't play a 2 samples from the same rack at the same time. For example, if you have in a drum rack a quick drum and a high hat, you can't play both at the same time, the last one added to the sequence will delete the previous sound in that step.
And the sequencer is 4 notes polyphonic, so when 4 samples are playing at the same time, if you add a 5th sample to the sequence in that step, one of the samples will stop playing. That can be a good or a bad thing, sometimes can mess up completely the sequence but other time can help to to create a dynamic sequence through out the time, by adding some samples, others fade away.
Other thing that might be upsetting: You can add samples to the sequence by 16 step mode or live mode. Even though its possible to record live to the sequence, what you play is quantized, so if you try to do something weird keep in mind that the sequencer can mess it up because will quantize what you play, regardless if you want it or not.
Conclusion: Is incredibly fun machine, if you use the limitation in your advantage, you can create really cool things with it.
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Introduction to Teenage Engineering / Most Versatile PO
José1369, 17.06.2020
This is my first Pocket Operator and I have to say that I've spend some time having fun while playing with it !

The PO 33 is a perfect introduction to the world of drum machines and hardware sequencers.
Even though all these buttons and leds might seem a little disturbing at first for the newbie, the PO is quite easy to handle, plus there are tons of tutos on the internet.

The built in FX are nice (some of them amazing) and very nice thought to live jam with.
The built-in mic does its job when you create patterns with friends, just for fun. And actually this is why it's so cool: you can take it anywhere with you, record a few sample sounds and easily create a small chain pattern that sounds like a "mini track".
Also, the more POs the merrier, and it all becomes truly interesting when you link them together!

On the other side you have to buy separately the plastic case or be careful when transporting even though the built feels relatively sturdy.

2 of my non-musicians friends bought one after I showed them the tiny machine.
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Simple & Fun
McSharry, 19.12.2019
The K.O. is the most portable synthesizer I've ever owned. While it can be limited when writing whole tracks, it's very easy to start putting together sounds and making nifty little loops.
The sampler feature is phenomenal and it opens up a world of possibility for recording on the go. Unlike the OP-Z, you can sample instantaneously anywhere, any time. And while the library is a bit limited space-wise, the quality is astounding. And editing samples is easy to learn.
The speaker is low quality but as good as you'd expect based on the wafer thin size of the synth. The look of the exposed solder on the board is a nice aesthetic but sometimes I find myself touching the solder behind the knobs and the synth treats it as if I'm moving the knobs. A slight design issue but a minor problem that I wouldn't fault the company on.
I deleted all the factory sounds almost immediately but I believe others may have more use for them as they're quite nice quality samples.
Finally, the live effects are what make this synth, and the rest of the PO series stand out to me. They make playing this instrument a genuinely fun experience.
I'd recommend to anybody interested in sampling to buy this and see what they come up with. It's certainly limited but it's a good learning tool in my opinion, and tonnes of fun for the bus or train.
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$84.89 €71.55
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