# Teenage Engineering POM–400 Buyer Guide

Whether POM–400 is the right Teenage Engineering tool for a larger patching surface and more oscillators in a self-contained modular object.

Buy POM–400 when you want a larger patching surface and more oscillators in a self-contained modular object; the main tradeoff is fixed architecture, kit-build/reliability history, and competition from truly expandable modular gear. The official US feed showed $359 on 2026-10-18; its status was out of stock and discontinued. As an Amazon Associate, Field Guides may earn from qualifying purchases.

Site: Field Guides
Category: Hardware
Version: 2026-10-18.2
Published: 2026-10-18
Updated: 2026-10-18
Freshness: Official Pocket Operator Modular page, current US price/status, Sound On Sound, Waveform Magazine, and community comparisons were checked 2026-10-18. No exact Amazon identity was accepted; no Amazon offer or availability claim is made.
Tags: teenage-engineering, portable-audio, music-hardware, pom-400, buyer-guide
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## Product Links

Disclosure: As an Amazon Associate, Field Guides may earn from qualifying purchases.

- [POM–400](https://teenage.engineering/products/po/modular) - Primary; Teenage Engineering; Check merchant. Three-oscillator Pocket Operator Modular synthesizer kit
- [POM–170](https://teenage.engineering/products/po/modular) - Downgrade; Teenage Engineering; Check merchant. Single-oscillator POM alternative

## Key Stats

- Official US price: $359 - Official store feed observation on 2026-10-18; Amazon price remains unverified.
- Official state: Out of stock and discontinued in the official US feed - Official US feed state; not an Amazon offer claim.
- Core role: Three-oscillator Pocket Operator Modular synthesizer kit - a larger patching surface and more oscillators in a self-contained modular object.
- Main constraint: fixed architecture, kit-build/reliability history, and competition from truly expandable modular gear - Check this before paying for the compact workflow.

## Quick Read

- The fit: POM–400 is a yellow, three-oscillator patching kit with an internal 16-step sequencer. - Choose it when a larger fixed patch surface is the object; choose Moog Mother-32 or Eurorack when ready-built or expandable matters more.
- The reason: Three oscillator sources and patchable fixed modules make timbre and routing visible. - The internal 16-step sequencer is part of POM–400; standalone POM–16 is a separate product.
- The catch: Assembly, discontinued supply, and early review issues affect ownership. - Inspect modules, knobs, patch cables, and power rather than assuming a keyboard or standalone sequencer is included.

## Bottom line

**Buy POM–400 for the larger fixed patch field.**

POM–400 is the larger fixed-architecture POM when three oscillator sources and a bigger patch field are worth assembling. The official US feed showed $359, out of stock and discontinued, on 2026-10-18; it has an internal 16-step sequencer, while standalone POM–16 is separate.

## Product shape

**Three oscillators and an internal 16-step sequencer.**

The official modular page positions POM–400 as the yellow three-oscillator member with patchable fixed modules and an internal 16-step sequencer. That gives it more sound sources than POM–170 without making it an interchangeable modular system; standalone POM–16 is not part of the base-kit assumption.

## Comparison ladder

**Choose more sources, ready-built flow, or expansion.**

| Choice | Product | What you gain | What you give up |
| --- | --- | --- | --- |
| Smaller POM | POM–170 | Choose the single-oscillator kit when footprint and lower complexity matter. | You give up POM–400’s extra oscillator sources and larger patch field. |
| Target | POM–400 | Choose it when three oscillator sources and physical patching are the point. | You accept fixed architecture, kit/reliability history, and discontinued supply. |
| Ready-built semi-modular | Moog Mother–32 | Choose a ready-built instrument with a conventional product workflow and sequencer. | You give up POM–400’s kit build and distinctive fixed panel. |
| Expandable system | Eurorack modular system | Choose module interchangeability and long-term expansion. | You trade compactness and object simplicity for cost and complexity. |

## Buying matrix

**Where POM–400’s larger panel fits.**

| Use case | Fit | Why |
| --- | --- | --- |
| Patch-learning object | Good with caveats | The panel teaches routing, but the architecture is fixed. |
| Finished production | Weak | A sampler or workstation is more direct for complete arrangements. |
| Expandable modular | Weak | Choose Eurorack or semi-modular equipment when growth matters. |
| Design-led collection | Strong | The physical build and yellow panel are part of the value. |

## Review signal

**Independent reviews explain the tradeoff better than the feature list.**

| Signal | What it supports | Confidence |
| --- | --- | --- |
| Sound On Sound | Sound On Sound describes the POM family’s patching model, fixed module architecture, and early production issues, including the POM-400. | Professional hands-on review |
| Waveform Magazine | Waveform treats POM-400 as an unusually attention-grabbing modular object and focuses on its visual/physical appeal and patching experience. | Professional review or launch-context source |
| r/synthesizers | Synth owners debate POM-400 against semi-modular and Eurorack alternatives; this is anecdotal comparison evidence. | Community signal; anecdotal |

## Mechanism

**What the kit includes, and what it does not.**

| Area | What the sources describe | Buyer consequence |
| --- | --- | --- |
| Voice | Three oscillator sources inside a fixed, patchable POM–400 panel. | More sources make it more expressive than POM–170, not more expandable. |
| Sequencing | Internal 16-step sequencer; standalone POM–16 is separate. | Do not treat POM–16 as an included keyboard or sequencing module. |
| Assembly | Kit construction, proprietary hardware, patch cables, knobs, modules, and power. | Check component fit, screws, cables, and power on used units; keyboard buttons are not a base POM–400 requirement. |
| Revision context | Early reviews documented assembly/fit concerns, while the official page documents revised-kit context. | Use the revision and return path to interpret older review complaints. |

## Decision

**Choose POM–400 when patch surface is the point.**

- Choose POM–400 when the larger fixed patch surface itself is the instrument; choose Mother–32 or Eurorack when immediate or expandable synthesis wins.
- Inspect every module, patch cable, knob, and power connection before accepting a used POM–400; do not expect keyboard buttons in the base product.
- Standalone POM–16 is separate, so do not infer it from the internal 16-step sequencer.
- Read early assembly reports alongside the official revised-kit guidance; do not turn review-era issues into a current failure rate.

## Edge cases

**Check modules, power, and the separate POM–16 boundary.**

- Inspect every module, patch cable, knob, and power connection before accepting a used POM–400; do not expect keyboard buttons in the base product.
- Standalone POM–16 is separate, so do not infer it from the internal 16-step sequencer.
- Read early assembly reports alongside the official revised-kit guidance; do not turn review-era issues into a current failure rate.
- The official feed marked POM–400 out of stock and discontinued; no Amazon identity was accepted.

## Cheat sheet

**POM–400 in one minute.**

| Question | Answer |
| --- | --- |
| Core role | Three-oscillator Pocket Operator Modular synthesizer kit with internal 16-step sequencer |
| Official US price observation | $359 on 2026-10-18; out of stock and discontinued in the official US feed |
| Best first buyer | A builder who wants more oscillator sources in a fixed patch object |
| Main limitation | Fixed architecture, assembly/condition risk, and discontinued supply |
| Source confidence | Official modular page plus two professional reviews and labeled owner discussion. |

## Sources

**How this guide was built.**

Official product, guide, and dated US price-feed sources were checked on 2026-10-18. Professional reviews and labeled owner discussion are identified in the source metadata; their workflow observations are not current offer, reliability, or hands-on claims by this guide. Merchant price, stock, seller, fulfillment, delivery, bundle contents, warranty, and returns remain unverified unless a dated source explicitly says otherwise. As an Amazon Associate, Field Guides may earn from qualifying purchases.

## Claim Table

| Where | Claim | Confidence | Source | Caveat |
| --- | --- | --- | --- | --- |
| Product shape | POM–400 is the three-oscillator pocket operator modular synthesizer kit in this comparison. | High | Teenage Engineering (te-pom-400-official) | The role is an editorial summary of the current official product page; recheck the exact model and variant before buying. |
| Product shape | The official Pocket Operator Modular page positions POM–400 as the yellow three-oscillator member with an internal 16-step sequencer and patchable fixed modules; standalone POM–16 is a separate product. | High | Teenage Engineering (te-pom-400-official) | Manufacturer specifications describe the feature set; they do not guarantee every workflow or host combination. |
| Buying matrix | The official US feed showed $359 for POM–400 on 2026-10-18; the listed state was out of stock and discontinued in the official US feed. | High | Teenage Engineering (te-price-feed) | This is an official store observation, not a live Amazon offer or a guarantee that every color, bundle, or seller shares the same state. |
| Review signal | Sound On Sound describes the POM family’s patching model, fixed module architecture, and early production issues, including the POM-400. | Medium | Sound On Sound (review-sos-pom400) | This is an independent review of a specific unit and time; it is not a universal performance guarantee. |
| Review signal | Waveform treats POM-400 as an unusually attention-grabbing modular object and focuses on its visual/physical appeal and patching experience. | Medium | Waveform Magazine (review-waveform-pom400) | The review’s sample, firmware, and comparison set may differ from a current unit. |
| Review signal | Synth owners debate POM-400 against semi-modular and Eurorack alternatives; this is anecdotal comparison evidence. | Medium | r/synthesizers (community-pom400) | Community reports are anecdotal and selection-biased; use them to form inspection questions, not failure rates. |
| Decision | POM–400 makes sense when a larger patching surface and more oscillators in a self-contained modular object; the main tradeoff is fixed architecture, kit-build/reliability history, and competition from truly expandable modular gear. | Medium | Sound On Sound (review-sos-pom400) | Fit depends on the reader’s workflow, budget, and tolerance for the stated limitation. |
| Edge cases | The relevant connection, configuration, and ownership caveats for POM–400 are material to the buying decision: inspect the modules, patch cables, knobs, power, internal 16-step sequencer, and separate status of standalone POM–16 before buying used. | High | Teenage Engineering (te-pom-400-official) | Check the current guide and included accessories for the exact revision before purchase. |

## Sources

- [Teenage Engineering US product and price feed](https://teenage.engineering/_api/mw2/products.json) - Teenage Engineering; Official; accessed 2026-10-18
- [POM–400 official product page](https://teenage.engineering/products/po/modular) - Teenage Engineering; Official; accessed 2026-10-18
- [Pocket Operator Modular](https://www.soundonsound.com/reviews/teenage-engineering-pocket-operator-modular) - Sound On Sound; Review; accessed 2026-10-18
- [Pocket Operator Modular 400 review](https://waveformmagazine.com/waveform-reviews/-pocket-operator-modular-400-teenage-engineering/) - Waveform Magazine; Review; accessed 2026-10-18
- [Is POM-400 a good idea?](https://www.reddit.com/r/synthesizers/comments/1ac9r1y/is_the_teenage_engineering_modular_400_a_good_idea/) - r/synthesizers; Community; accessed 2026-10-18

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