Retro audio
Koss Porta Pro
Pure retro-future energy. A portable-audio icon that looks like it escaped from the exact era this channel keeps falling back into.
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The obsession shelf
A rotating list of products that feel like Mark's Accidentally Obsessed: retro audio, cassettes, weird physical media, comics, old-computer gear, DIY Steam Machine build parts, watches, Japanese-learning gear, and tools for taking old tech apart just to see what makes it tick.
These aren't all “my exact gear” — they're curated picks tied to the same rabbit holes as the videos. For vintage or frequently changing products, links open an Amazon search so you can see what's actually available right now.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases.
Vinyl & physical media
Audio-Technica AT-LP60X
A friendly doorway into the vinyl rabbit hole — physical media, strange pressings, format wars, and records with secrets hiding in the grooves.
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Forgotten formats
Sony 80-Minute MiniDisc
Tiny optical media with maximum “why was this so cool?” appeal. Basically the physical-media side of MAO in one little jewel case.
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Watch rabbit hole
Casio Duro MDV-106
Affordable, overbuilt, and exactly the kind of watch that can turn “I just need one watch” into an entire new obsession.
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Japanese
GENKI I — Third Edition
For the Japanese-learning side of the channel: a recognizable starting point for anyone about to disappear into the language-learning rabbit hole.
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Tinker gear
iFixit Pro Tech Toolkit
For opening old gadgets, resurrecting weird hardware, and answering the dangerous question: “Okay, but how does this thing actually work?”
View product📼CASSETTE
Cassette rabbit hole
FiiO CP13 Cassette Player
A modern all-analog portable cassette player for anyone who watched the cassette deep dive and immediately wanted to start playing tapes again.
Search Amazon⏺️RECORD
Cassette recording
Blank Audio Cassettes
For actually making a mixtape instead of just talking about how cool mixtapes were. The link searches for Maxell UR-90 and similar Type I blanks.
Search Amazon🧼TAPE CARE
Tape preservation
Cassette Head Cleaning Kit
Old decks need a little love. Cleaning the tape path is one of the first things worth doing when resurrecting vintage cassette hardware.
Search Amazon📺ANALOG → HDMI
LaserDisc & VHS
Composite-to-HDMI Converter
A simple bridge for hooking composite-output LaserDisc players, VCRs, and other old video gear to a modern HDMI display.
Search Amazon💥COMICS
Image Comics rabbit hole
BCW Comic Bags & Boards
For the inevitable point where a video about comic creators turns into buying issues. Bags and boards keep the new rabbit hole from becoming a damaged one.
Search Amazon📚LONG BOX ENERGY
Comic storage
Comic Book Short Box
Because “I'll only grab a couple issues” is how you end up needing dedicated comic storage. A short box is a much more manageable first step.
Search Amazon💾100 MB!
Zip Disk video
Iomega Zip Disks
The format that made a 1.44 MB floppy suddenly feel microscopic. Vintage stock varies constantly, so this goes to the current Amazon results.
Search Amazon💾1.44 MB
Zip vs. floppy
USB 3.5-Inch Floppy Drive
A cheap way to revisit the format Zip disks were trying to replace — and to remind yourself just how tiny 1.44 MB really is.
Search Amazon❄️THERMAL
Steam Machine cooling
Thermal Grizzly Kryonaut (1 g)
The thermal paste from the BC-250 build: a small but important part of getting the unusual mining hardware ready for gaming.
View product📶WI-FI + BT
Steam Machine connectivity
TP-Link Archer TX10UB Nano AX900
A compact USB Wi-Fi 6 and Bluetooth 5.3 adapter, tied to the DIY Steam Machine's wireless setup.
View product🖥️DP → HDMI
Steam Machine display
UGREEN DisplayPort-to-HDMI Adapter
The DisplayPort-to-HDMI adapter from the BC-250 living-room console project. Check your TV and device compatibility before buying.
View product⚡500W PSU
Steam Machine power
Apevia ITX-PFC500W 500W Power Supply
The compact, fully modular Flex ATX power supply used for the DIY Steam Machine build.
View productAs an Amazon Associate I earn from qualifying purchases. Prices and availability are on Amazon. Links use tracking tag markcurrently-20.