Teenage Engineering OB–4 Buyer Guide

Bottom line

Buy OB–4 for portable listening with rewind.

Bluetooth, line input, FM radio, a rolling two-hour replay buffer, and disk-mode sound tools
Official price and Amazon offer state can diverge.

Check Amazon Amazon price, stock, seller, fulfillment, delivery, bundle, warranty, and return terms remain unverified. Choose it when listening itself—portable, high-quality, and rewindable—is the job. Its replay buffer is a temporary two-hour listening interaction rather than saved recordings. Fresh official rows showed $579 for black EU/US variants and $1,150 for the Off–White EU variant; those checked rows were out of stock on 2026-10-18. Compare a Sonos Move 2 or a two-speaker stereo setup when ordinary playback or room imaging is the real job.

Product shape

A speaker whose replay buffer changes listening.

OB–4 is a portable Bluetooth/FM/line speaker with disk-mode sound tools and a rolling two-hour replay buffer. The replay function changes how you revisit live radio, Bluetooth, or line playback, but it does not create a library of saved recordings. Buy it for listening and interaction first, then choose among standard black, red, gray, navy, ochre, orange, or white variants, Off–White/Mind Games designs, and red/white portable magic kits; region rows differ.

Comparison ladder

Compare listening roles, not raw speaker counts.

Choice	Product	What you gain	What you give up
Ordinary portable speaker	Sonos Move 2 or Marshall Kilburn III	Choose a mainstream speaker when convenience, app ecosystem, and lower-complexity playback matter more.	You give up OB–4’s replay buffer, FM/disk interaction, and distinctive portable object.
Target	OB–4	Choose it when portable listening and rewind/loop interaction are the main use.	You pay for a specialized listening experience rather than generic volume alone.
Stereo alternative	Two-speaker stereo setup	Choose a stereo pair when room imaging and left/right separation matter more.	You give up OB–4’s one-box portability and replay behavior.
TE lateral	OD–11 stereo alternative	Choose OD–11 when fixed-room hi-fi placement and stereo pairing are more important.	It is less portable and has a different documented control path.

Buying matrix

Where OB–4’s replay workflow matters.

Use case	Fit	Why
Portable listening	Strong	Battery, Bluetooth, FM/line input, and the replay interaction are the reason to buy it.
Saved recordings	None	The rolling buffer is for rewind/loop interaction, not a saved recording archive.
Room stereo	Mixed	Compare a two-speaker setup or OD–11 pair when imaging matters.
Configuration	Needs care	Check whether the listing is a standard speaker, an Off–White/Mind Games design, or a red/white portable magic kit, then confirm color, region, and package contents at checkout.

Review signal

Independent reviews explain the tradeoff better than the feature list.

Signal	What it supports	Confidence
Root-Nation	Root-Nation describes OB–4 as a portable speaker with 92dB stereo output, unusual controls, and a design-led feature set, while recognizing that ordinary speakers can be cheaper.	Professional Hands-On Review
Android Central	Android Central highlights Bluetooth, 3.5mm input, FM, disk-mode sounds, physical controls, and the premium price relative to mainstream Bluetooth speakers.	Professional Review Or Launch-Context Source
r/teenageengineering	Owners disagree on whether the sound and interaction justify the price; the spread is useful community signal, not a controlled listening test.	Community Signal; Anecdotal

Mechanism

How OB–4 treats playback and replay.

Area	What the sources describe	Buyer consequence
Playback	Bluetooth, line input, FM radio, and disk-mode sound controls.	Choose the source path before buying; the speaker is designed around listening and interaction.
Replay buffer	Rolling two-hour buffer for rewind and loop play.	It lets you revisit recent playback but does not save a file for later editing.
Configuration	Standard black/red/gray/navy/ochre/orange/white variants, Off–White/Mind Games designs, and red/white portable magic kits appear under region-specific rows.	Read the package contents and region rather than comparing opaque bundle identifiers.
Ownership	Official price observation is dated to 2026-10-18.	Confirm current seller, condition, price, stock, and return terms at checkout.

Decision

Choose OB–4 when the listening interaction matters.

Choose OB–4 when its portable listening and replay behavior will be used often; choose a mainstream Bluetooth speaker or stereo pair when the job is ordinary playback or room imaging.
Do not describe the replay buffer as saved recordings; it is a rolling interaction with recent playback.
Compare Sonos Move 2 or Marshall Kilburn III for ordinary portable Bluetooth use, and a two-speaker setup for stereo imaging.
Check color/design, region, and magic-kit contents at checkout because official package rows represent configurations, not new speaker architectures.

Edge cases

Separate replay from recording, and name the configuration.

Do not describe the replay buffer as saved recordings; it is a rolling interaction with recent playback.
Compare Sonos Move 2 or Marshall Kilburn III for ordinary portable Bluetooth use, and a two-speaker setup for stereo imaging.
Check color/design, region, and magic-kit contents at checkout because official package rows represent configurations, not new speaker architectures.
Test the line, Bluetooth, FM, and disk-mode paths you expect to use before relying on it for a specific listening setup.

Cheat sheet

OB–4 in one minute.

Question	Answer
Core role	Portable Bluetooth/FM speaker and replay-oriented media instrument
Official US price observation	$579 black EU/US rows and $1,150 Off–White EU row on 2026-10-18; those checked rows were out of stock
Best first buyer	A listener who values portable sound and rewind/loop interaction
Main limitation	Specialized listening workflow and configuration/region choices
Source confidence	Official specifications 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.

Receipts

Claim table

Where	Claim	Confidence	Source	Caveat
Product shape	OB–4 is the portable bluetooth/fm speaker and media instrument in this comparison.	High	Teenage Engineering	The role is an editorial summary of the current official product page; recheck the exact model and variant before buying.
Product shape	The official page and family catalog identify OB–4 as a portable Bluetooth/FM speaker with line input, replay/disk features, and color/design variants; the accepted identity row covers a generic OB–4 listing.	High	Teenage Engineering	Manufacturer specifications describe the feature set; they do not guarantee every workflow or host combination.
Buying matrix	The official US feed showed $579–$1,150 by listed color/design SKU for OB–4 on 2026-10-18; the listed state was mixed in-stock/out-of-stock and discontinued variants in the official US feed.	High	Teenage Engineering	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	Root-Nation describes OB–4 as a portable speaker with 92dB stereo output, unusual controls, and a design-led feature set, while recognizing that ordinary speakers can be cheaper.	Medium	Root-Nation	This is an independent review of a specific unit and time; it is not a universal performance guarantee.
Review signal	Android Central highlights Bluetooth, 3.5mm input, FM, disk-mode sounds, physical controls, and the premium price relative to mainstream Bluetooth speakers.	Medium	Android Central	The review’s sample, firmware, and comparison set may differ from a current unit.
Review signal	Owners disagree on whether the sound and interaction justify the price; the spread is useful community signal, not a controlled listening test.	Medium	r/teenageengineering	Community reports are anecdotal and selection-biased; use them to form inspection questions, not failure rates.
Decision	OB–4 makes sense when a design-forward portable speaker with physical playback, FM, and “disk” features; the main tradeoff is far higher price than ordinary Bluetooth speakers and a sound/features mix that only makes sense if you want the object’s character.	Medium	Root-Nation	Fit depends on the reader’s workflow, budget, and tolerance for the stated limitation.
Edge cases	The relevant connection, configuration, and ownership caveats for OB–4 are material to the buying decision: Do not buy OB–4 solely for maximum sound per dollar; independent reviews explicitly compare it with cheaper mainstream speakers.	High	Teenage Engineering	Check the current guide and included accessories for the exact revision before purchase.
Mechanism	The official package rows cover standard/design-color/region variants and named portable magic-kit configurations; confirm the package contents rather than comparing opaque identifiers.	High	Teenage Engineering	These are dated official US feed rows; current merchant offers, stock, seller, fulfillment, delivery, bundle contents, warranty, and returns remain unverified.