Theremin
FailShoppers spend an estimated $29K a year here, so Theremin is a Fail.
- Flapen Score
- 39 / 100Ranks 117 of 171 Musical Instruments & DJ niches · −5 vs the category median of 4439
- Market size
- £29K/yr42K searches / yr
- 90-day growth
- -23.2%search demand this quarter
- Competition
- 77%top-5 click share · 12 brands · 20 sellers
Flapen Score
Theremin against its category
The dotted line is the Musical Instruments & DJ average. Past it, Theremin is stronger. Inside it, weaker.
Market
The Theremin market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for Theremin 42K times last year and spent an estimated £29K. The top 5 brands take 85% of clicks. Flapen scores it 39 out of 100, a Fail.
01 · Demand
An estimated 1.3% of those searches ended in a purchase.
Shoppers searched for this 42K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 1.3% of those searches ended in a purchase. Searches in the last 90 days moved -23.2% against the 90 days before. Searches, conversion and average price together put the market at an estimated £29K a year.
- Searches, last 12 months
- 42K
- Growth, 90 days vs prior 90
- -23.2%
- Conversion, latest week
- 1.3%
- Market size, estimated
- £29Ka year
- Top search term
- theremin27K searches a year
02 · Price
A sale here is worth £55.60.
Listings sell for £55.60 on average, from £25.13 to £273.80. Amazon reports units sold in ranges. This niche sold 250 to 500 a year. The average listing sells 0 to 100 of them. At £55.60 that is £0 to £6K a year per listing.
- Average price
- £55.60inside the $15 to $100 sweet spot
- Price range
- £25.13–£273.80
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 250–500
- Units per listing a year
- 0–100
- Revenue per listing a year
- £0–£6K
- Returns
- 1.1%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is low.
79% of listings pay for placement with sponsored ads. 71% ship with Prime. On an average day, 17.7% of listings are out of stock. The average listing ranks #44 within Musical Instruments & DJ. It carries 948 reviews at 3.78 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 79%
- Prime listings
- 71%
- Out of stock, average day
- 17.7%
- Average rank
- #44in Musical Instruments & DJ
- Average rating
- 3.78 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 948per listing
- Listings tracked
- 14
04 · Newcomers
0 of last year's 3 launches cleared the first-year sales bar.
3 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 38 months on average, so the names here are settling in.
- Launched, last 12 months
- 3
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 38 months
Products
Top Theremin products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 28, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Stylophone Theremin Award-Winning Portable Touch-Sensitive Synthesizer with Retro Analog Sound Built-In Speaker Delay & Vibrato Effects Slider Control Compact Battery-Powered Design
- Price
- £88.47
- Rating
- 4.2/5
- Reviews
- 88
- Age
- 2y ago

MOOG Theremini - Theremin with Pitch Correction CV Out Built-In Tuner and Speaker AniMOOG Synthesizer Sound Engine with 32 Presets and LCD Screen
- Price
- £273.80
- Rating
- 4.5/5
- Reviews
- 613
- Age
- 8y ago

VIOPDER Mini Theremin Musical Electronic Instrument with Screen Display Gift Easy to Use Black
- Price
- £32.08
- Rating
- 5.0/5
- Reviews
- 2
- Age
- 1y ago

Iegefirm Theremin Musical Electronic Instrument with Screen Display for Boyfriend Music Fans
- Price
- £28.37
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 4mo ago

Stylophone The Original Pocket Electronic Synthesizer | Synth Musical Instrument | Synthesizer Keyboard | Stylophone Instrument Synth
- Price
- £25.13
- Rating
- 4.6/5
- Reviews
- 11,031
- Age
- 10y ago
Trending
estimated 90-day click momentum
Iegefirm Theremin Musical Electronic Instrument with Screen Display for Boyfriend Music Fans
- Price
- £28.37
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 4mo ago

YUKERMARB Mini Theremin Musical Electronic Instrument Type C Interface Multiple Adjustable Voices Theremin Vintage Musical Module
- Price
- £34.69
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 6mo ago

Dioche Audio Theremin Musical Module Color Display Voices Adjustable Design Small And Exquisite Item for Friend
- Price
- £28.27
- Rating
- 4.3/5
- Reviews
- 3
- Age
- 1y ago

Audio Theremin Vintage Music Module with Color Display Electronic Musical Instrument Adjustable 70 Tones for Musicians and Music Lovers
- Price
- £27.16
- Rating
- 4.4/5
- Reviews
- 2
- Age
- 1y ago

VIOPDER Mini Theremin Musical Electronic Instrument with Screen Display Gift Easy to Use Black
- Price
- £32.08
- Rating
- 5.0/5
- Reviews
- 2
- Age
- 1y ago
Newest
by launch date
Iegefirm Theremin Musical Electronic Instrument with Screen Display for Boyfriend Music Fans
- Price
- £28.37
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 4mo ago

YUKERMARB Mini Theremin Musical Electronic Instrument Type C Interface Multiple Adjustable Voices Theremin Vintage Musical Module
- Price
- £34.69
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 6mo ago

NbgrvB Theremin Electronic Music Instrument with Colour Screen Display Pitch Indicator Multiple Voice Options Built-In Speaker Type-C Powered Portable
- Price
- £28.97
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 7mo ago

VIOPDER Mini Theremin Musical Electronic Instrument with Screen Display Gift Easy to Use Black
- Price
- £32.08
- Rating
- 5.0/5
- Reviews
- 2
- Age
- 1y ago

Audio Theremin Vintage Music Module with Color Display Electronic Musical Instrument Adjustable 70 Tones for Musicians and Music Lovers
- Price
- £27.16
- Rating
- 4.4/5
- Reviews
- 2
- Age
- 1y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 77% of clicks. A locked shelf that new listings rarely crack.
Brands
12 flat
Sellers
20
Est. top-5 brand share
85%
Top 20: 100%
Est. top-5 click share
77%
Top 20: 100%
Open market
11%
- Stylophone34%
- MOOG18%
- VIOPDER15%
- Iegefirm12%
- Dioche6%
- Goshyda3%
- Open — no brand owns it (6 brands, 11%)
Demand
Theremin search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Feb · busiest ÷ quietest = 1.6× · 7 of 12 months tracked
Search terms
Top Theremin search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- theremin27K/yr
- theramin5K/yr
- theremin instrument7K/yr
- stylophone theremin2K/yr
Reviews and returns
What reviews say buyers love and hate about Theremin
We read the reviews and the return reasons for every product selling here.
“However I've found this very difficult - at first I thought it was going to be one of those things I couldn't do”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
15 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Theremin questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









