fiio jm21
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Review moat
Great237.29avg incumbent reviews — the moat a new listing must climb
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Avg price
Okay£193.77avg listing price — sweet spot $15–$100
Market size
Okay£234K£234K/yr · 80K searches
Price range
Okay£19.99–£315.92cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Bad5.1%return rate — above 5% kills the launch gate
Conversion
Bad1.5%search→purchase rate — share of searches ending in a sale
Growth
Bad-33.0%90-day search growth — must beat 0% to launch
Competition
Bad94%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, fiio jm21 is a £234K/yr Amazon United Kingdom market (80K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 27/100.
Data updated Jul 22, 2026 · scored weekly · How we score niches
fiio jm21 market data
- Units sold / yr
- 500–750
- avg 0–100/product
- Revenue / yr
- £97K–£145K
- units × avg price
- Conversion rate
- 1.5%
- Avg BSR
- #309
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 43%
- Out of stock
- 21.9%
- Avg brand age
- 32 months
- Avg seller age
- 215 days
Competition & brand share
The top 5 products capture 94% of clicks — a locked-up shelf that new listings rarely crack.Brands
2 falling
Sellers
8
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
94%
Top 20: 100%
Open market
0%
- FiiO98%
- HiBy2%
Demand
Weekly Amazon search volume, last 43 weeks — -33.0% search growth over the last 90 days.Top fiio jm21 search terms
- fiio m2148K/yr
- fiio jm2130K/yr
- fiio jm21 digital audio player2K/yr
Top fiio jm21 products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 7 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
FiiO M21 Digital Audio Player (Blue)
FiiO£282.824.3★363 rev
FiiO JM21 Digital Audio Player with 4+64GB Memory (Sky Blue)
FiiO£198.134.6★36 rev
FiiO JM21 Digital Audio Player with 4+64GB Memory (Black)
FiiO£198.914.6★36 rev
FiiO M21 Android 13 Portable Music Player MP3 Snapdragon 680 4* CS43198 DAC Chips Hi-Res Audio DSD Bluetooth LDAC (Titanium Gold)
FiiO£283.604.3★363 rev
FiiO M21 Portable Music Player Android 13 MP3 Snapdragon 680 4 Chips DAC CS43198 Audio High Resolution DSD Bluetooth LDAC (Black)
FiiO£315.924.3★363 rev
Newest
by launch dateFiiO JM21 Digital Audio Player with 4+64GB Memory (Sky Blue)
FiiO£198.1336 rev
FiiO JM21 Digital Audio Player with 4+64GB Memory (Black)
FiiO£198.9136 rev
FiiO M21 Portable Music Player Android 13 MP3 Snapdragon 680 4 Chips DAC CS43198 Audio High Resolution DSD Bluetooth LDAC (Black)
FiiO£315.92363 rev
Cassette Style Case for the FiiO M21 DAP (Titanium Gold)
FiiO£19.9916 rev
FiiO M21 Digital Audio Player (Blue)
FiiO£282.82363 rev
Trending
90-day click momentumFiiO M21 Portable Music Player Android 13 MP3 Snapdragon 680 4 Chips DAC CS43198 Audio High Resolution DSD Bluetooth LDAC (Black)
FiiO£315.924.3★
FiiO JM21 Digital Audio Player with 4+64GB Memory (Sky Blue)
FiiO£198.134.6★
FiiO JM21 Digital Audio Player with 4+64GB Memory (Black)
FiiO£198.914.6★
HiBy R1 HiFi MP3 Player with Bluetooth 5.1 Tidal Qobuz DSD 256 native Lossless Music Player with Touchscreen/Hi Res Audio Certified/MSEB Tuning/2TB Expanded Memory
HiBy£56.994.2★
Cassette Style Case for the FiiO M21 DAP (Titanium Gold)
FiiO£19.994.6★
What buyers say about fiio jm21
What buyers praise and complain about, mined from review topics.What buyers love
“It sounds clear with smooth sound”
“The build quality is decent”
“Brilliant value for the money”
“all the buttons work”
“The robust construction is also very reassuring”
“Really clever design and nice finish”
“easy to use”
“Storage is excellent - even 2TB is actually more than I need for travelling”
“Most efficient and professional”
“Having the Play Store on it means it is very flexible”
What buyers complain about
“Hopeless Bluetooth”
“Yes and no, I think it's a bit too expensive,”
“When charging gets to hot and corrupts screen”
“Horrid UI/interface”
“as there is a problem with the headphone socket”
“felt like it wouldn't last a week”
“My biggest issue was the scrolling wheel”
“theres sometimes a faint static crack”
“Rather complicated operation a few more bells”
“It has issues”
Top return reasons
Common questions
- Is fiio jm21 profitable to sell on Amazon United Kingdom?
- The niche generates £234K/yr across 7 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is -33.0%. Flapen's verdict: Skip it (27/100).
- How competitive is the fiio jm21 niche?
- 2 brands and 8 sellers compete. The top 5 products take 94% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in fiio jm21?
- Top complaints mined from reviews: Connectivity-Overall, Value For Money, Charging. The return rate is 5.1% — above our launch gate.
- What does it cost to enter the fiio jm21 niche?
- Listings span £19.99–£315.92; the average listing price is £193.77 (sweet spot $15–$100). The average incumbent carries 237 reviews — the moat a new listing must climb.