Teenage Engineering PO-137 Rick & Morty Limited Edition review

The perfect addition to your handheld arsenal, or just fanboy merchandise?

  • £85
  • €119
  • $89
Teenage Engineering PO-137 Rick & Morty Limited Edition review
(Image: © Future)

MusicRadar Verdict

Roiland-voiced samples make this a Rick and Morty fan delight – and might even convert some newcomers along the way.


  • +

    Not just for the RnM fans.

  • +


  • +

    Tons of battery life.


  • -

    Doesn’t come with batteries.

  • -

    Buttons on the fiddly side.

  • -

    Will you want to delete the onboard samples?

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What is it?

Since their inception, Teenage Engineering’s Pocket Operator handheld synths have focussed on succeeding at one vital thing: making music fun

The latest addition to the series sees the existing PO-35 Speak take a wrong turn into a parallel universe in the form of the PO-137. 

In what can only be seen as a very canny marketing move, teaming up with Rick and Morty co-creator Justin Roiland, the Swedish manufacturer has created the perfect merchandise for fans of the Adult Swim show and refreshed an already existing design, with, presumably, little investment needed. 

The PO-137 takes the PO-35 and adds Roiland’s own designs to the interface and LCD screen and sees his vocal talents at the mercy of the onboard effects and different voice types. Even the model number is a nod to the show.

We’d go out on a limb and say this particular Pocket Operator is the most useful of the bunch

Cynics may already be asking ‘What is the point in spending extra money on what is just a reskinned product?’ Well, the good news is that the PO-137 doesn’t cost any more than the PO-35 Speak, which just begs the question, should you buy the -137 or will the -35 suffice?

Peformance and Verdict

Every Pocket Operator shares the same interface layout, an LCD screen, onboard speaker, stereo out that can also be patched to send out a pulse clock and mono signal, which can be chained with other POs via the 3.5mm input. 

Like the PO-35, the -137 features eight voice characters, eight effects, a 16-step sequencer and a Microtonic drum engine. The big difference here is that the 15 pre-loaded samples are voiced by Roiland himself and feature some of the catchphrases from the show.

This is, however, where one issue lies with the -137: rewriting over the Rick and Morty samples with your own. In fact, the dilemma is clearly spelt out on sound #15, delivered by Rick himself: “If you want to ruin this thing, then press one through 15 to record your own dumb sounds.”

Also consider...

(Image credit: Future)

Teenage Engineering Pocket Operators
Despite some functional annoyances, the Pocket Operators are a lot of fun. They include Rhythm (a drum synthesizer), Sub (a bassline synthesizer) and Factory (a melody synthesizer), with the latter two harnessing synthesis methods ranging from FM and subtractive to wavetable and physical modelling.

That’s a stark warning that’s hard to ignore, but once you’ve overcome that hurdle and done so anyway, you’ll be pleased to have a crunchy, lo-fi sampler and voice synth at your disposal. 

In fact, we’d go out on a limb and say this particular Pocket Operator is the most useful of the bunch. That said, it still suffers from the same issues as previous models, such as the fiddly nature of the buttons. And the rotary dial controls are contextual, so familiarise yourself with the manual.

The overall storage limits you to 120 seconds of sample time, which may seem little, but it’s more than enough space to create interesting sequences, especially combined with the onboard drum machine. 

This is further enhanced by the very addictive effects, which can be punched in on-the-fly, or recorded as parameter locks.

For those fans who will undoubtedly come for the Rick and Morty samples, we’re sure they will leave realising they’ve got a handy little lo-fi sampler that delivers fun in spades. But how limited this edition really is… we just don’t know.

MusicRadar review: Roiland-voiced samples make this a Rick and Morty fan delight – and might even convert some newcomers along the way.

Hands-on demos

Adult Swim

Andrew Huang

Sound Technology


(Image credit: Future)
  • Type: Sampler and voice synth
  • Key Features: Handheld pocket sampler and voice synthesizer. Microphone, 16-step sequencer, 16 patterns (chainable), 8 voice types, 8 effects, 16-part Microtonic drum engine, pre-loaded with exclusive Rick and Morty samples
  • Contact: Teenage Engineering