RenSynthJp
Joined: Aug 06, 2026
Posts: 18
Location: Kobe, Japan
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 Posted: Mon Aug 17, 2026 9:14 am Post subject:
Getting it home: the three limits that decide whether a Japanese synth can ship to you at all |
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Four threads back I went through the ways to actually find gear in Japan — the Hard Off junk corner, Digimart, Yahoo! Auctions and then Mercari plus the 100V question. Sourcing and power are the two halves people argue about. The half nobody mentions until it bites is the parcel itself, and it is the one that can kill a purchase outright — not make it expensive, kill it.
Three hard limits, in the order they actually stop you.
1. The size cap, which is not about weight
Japan Post EMS to the United States tops out at 30 kg, 1.5 m maximum length, and 2.75 m maximum length plus girth. Girth is 2 × (width + height), so the arithmetic on a packed box is:
| Code: | | length + 2 × (width + height) ≤ 275 cm |
A 61-key board in a sensibly packed carton — say 110 × 45 × 25 cm — comes to 110 + 140 = 250 cm and goes. An 88-key board in its factory carton is where it falls apart: 150 × 50 × 25 cm is 150 + 150 = 300 cm, over the cap, and the 150 cm side is already at the length limit on its own. Nothing about that parcel is heavy. It is simply too long a box for the post, and no amount of paying more fixes it — it gets refused at the counter. Big boards mean a commercial courier or sea freight, and sea mail carries the same 30 kg ceiling with a 1–3 month transit.
Do the sum before you bid, not after. And ask for the packed dimensions, not the instrument's dimensions.
2. Volumetric weight, which is why light gear can cost more than heavy gear
Express services bill the greater of actual weight and volumetric weight, and volumetric is length × width × height in centimetres divided by 5000. So a 120 × 50 × 25 cm carton is 150000 / 5000 = 30 kg of chargeable weight even if the synth inside weighs 14 kg. Meanwhile a rack unit in a snug box is billed at what it really weighs.
The practical consequence is unintuitive: a heavy 2U rack is often the cheap thing to ship and a light, bulky keyboard in its original polystyrene carton is the expensive one. If a seller is shipping in the factory box with 8 cm of air on every side, asking whether they will repack it tighter is worth more than any negotiation on the price. This is also the single biggest argument for consolidating several small purchases into one box rather than letting each one ship on its own.
3. Batteries — the one that surprises people
Japanese international mail will not take standalone lithium cells. Batteries installed inside equipment are accepted, in limited quantity and not to every destination. For our world that lands in a specific place:
- The lithium cell already sitting on the board of a DX7, a JX-8P, an M1 — fine, it ships installed.
- A bag of spare CR2032s or a replacement pack ordered on its own — not by post. Buy those locally; they are the same part everywhere and it is not worth the parcel being rejected.
If you are having a seller swap a dead memory battery before shipping, that is fine, and it also spares you the "the patches are gone" surprise on arrival.
Two things worth knowing alongside that
EMS carries compensation up to ¥2,000,000, which matters a good deal more on a vintage rack than the difference in postage does. And Japan Post restored most of its overseas routes on 14 April 2026 after the 2025 suspension, so the postal options are genuinely back rather than theoretically back — which was not true for a stretch last year.
I wrote the full method-by-method comparison up here, including the transit times and where each one stops making sense: EMS vs DHL vs ECMS vs sea mail, with the weight and size caps. Same disclosure as the previous four threads: that is the proxy service I use, so read it as a working reference rather than a recommendation, and this is the live keyboard listings feed I keep open for price sanity checks.
The open question I still have no good answer to: what do people here actually do about 88-key boards from Japan? Every route I can price out — courier, or crating it for freight — costs more than the instrument does at Hard Off prices, and I have never seen anyone claim otherwise. Is the honest answer just "don't, buy those locally"? |
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