2.1 Amp
FailThe top 5 brands take 97% of clicks, so 2.1 Amp is a Fail.
- Flapen Score
- 36 / 100Ranks 6,374 of 8,347 Electronics niches · −7 vs the category median of 4336
- Market size
- $84K/yr59K searches / yr
- 90-day growth
- +43.3%search demand this quarter
- Competition
- 83%top-5 click share · 6 brands · 10 sellers
Flapen Score
2.1 Amp against its category
The dotted line is the Electronics average. Past it, 2.1 Amp is stronger. Inside it, weaker.
Market
The 2.1 Amp market on Amazon at a glance
Shoppers on Amazon United States searched for 2.1 Amp 59K times last year and spent an estimated $84K. The top 5 brands take 97% of clicks. Flapen scores it 36 out of 100, a Fail.
01 · Demand
An estimated 2.1% of those searches ended in a purchase.
Shoppers searched for this 59K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 2.1% of those searches ended in a purchase. Searches in the last 90 days moved +43.3% against the 90 days before. Searches, conversion and average price together put the market at an estimated $84K a year.
- Searches, last 12 months
- 59K
- Growth, 90 days vs prior 90
- +43.3%
- Conversion, latest week
- 2.1%
- Market size, estimated
- $84Ka year
- Top search term
- 2.1 bluetooth amplifier24K searches a year
02 · Price
A sale here is worth $67.02.
Listings sell for $67.02 on average, from $21.84 to $149.72. Amazon reports units sold in ranges. This niche sold 1K to 1K a year. The average listing sells 100 to 250 of them. At $67.02 that is $7K to $17K a year per listing.
- Average price
- $67.02inside the $15 to $100 sweet spot
- Price range
- $21.84–$149.72
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 1K–1K
- Units per listing a year
- 100–250
- Revenue per listing a year
- $7K–$17K
- Returns
- 6.4%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is low.
90% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #274 within Home Theater. It carries 936 reviews at 4.43 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 90%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #274in Home Theater
- Average rating
- 4.43 starsAmazon United States average 4.42 stars
- Average reviews
- 936per listing
- Listings tracked
- 10
04 · Newcomers
1 of last year's 1 launches cleared the first-year sales bar.
1 products launched here in the last 12 months. 1 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
- 1
- Successful launches
- 1Amazon's first-year sales bar
- Average brand age
- 38 months
Products
Top 2.1 Amp 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 22, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Fosi Audio Bluetooth Subwoofer Amplifier 2.1 BT30D Pro Subwoofer Amp with TPA3255 Chips 165W x2+350W & Bass Treble Control 2.1 Channel Sub Amplifier for Desktop/Outdoor/Bookshelf Speakers
- Price
- $105.68
- Rating
- 4.4/5
- Reviews
- 1,857
- Age
- 4y ago

Fosi Audio BT30D Bluetooth 5.0 Stereo Audio Receiver Amplifier 2.1 Channel Mini Hi-Fi Class D Integrated Amp 50 Watt x2+100 Watt for Home Outdoor Passive Speakers/Subwoofer Powered Subwoofer
- Price
- $83.93
- Rating
- 4.4/5
- Reviews
- 2,960
- Age
- 7y ago

Fosi Audio BT30D Pro Bluetooth Subwoofer Amplifier 2.1 Channel Amplifier 165W x 2 + 350W TPA3255 Chips Bass Treble Control for Desktop Outdoor Bookshelf Speakers with 48V Power Supply
- Price
- $149.72
- Rating
- 5.0/5
- Reviews
- 1
- Age
- 1y ago

Fosi Audio BT20A Pro Bluetooth 5.0 Amplifier 300W x2 Wireless Amp TPA3255 2 Channel Mini Class D Integrated Home Audio Outdoor Stereo Receiver with Bass Treble Control for Passive Speakers
- Price
- $94.01
- Rating
- 4.5/5
- Reviews
- 2,854
- Age
- 7y ago

Romicta 2.1 Channel Stereo Audio Amplifier 300Wx2+360W Home Audio Stereo Receiver Bluetooth 5.0 with USB/AUX Remote Bass Treble & Sub Control for Active/Passive Subwoofer & Speaker
- Price
- $48.27
- Rating
- 4.2/5
- Reviews
- 731
- Age
- 7mo ago
Trending
estimated 90-day click momentum
Fosi Audio BT30D Pro Bluetooth Subwoofer Amplifier 2.1 Channel Amplifier 165W x 2 + 350W TPA3255 Chips Bass Treble Control for Desktop Outdoor Bookshelf Speakers with 48V Power Supply
- Price
- $149.72
- Rating
- 5.0/5
- Reviews
- 1
- Age
- 1y ago

100W+100W+200W Power Amplifier Board TPA3221 Chip with BluetoothAUX and USB Inputs 2.1 Channel Audio Power Amplifier (S200HS-W)
- Price
- $37.10
- Rating
- 4.5/5
- Reviews
- 29
- Age
- 1y ago

Romicta 2.1 Channel Stereo Audio Amplifier 300Wx2+360W Home Audio Stereo Receiver Bluetooth 5.0 with USB/AUX Remote Bass Treble & Sub Control for Active/Passive Subwoofer & Speaker
- Price
- $48.27
- Rating
- 4.2/5
- Reviews
- 731
- Age
- 7mo ago

ZK-TB21 Bluetooth 5.0 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board TPA3116D2 HiFi Treble and Bass Control Stereo Digital Audio Amp Board for Home Theater DIY Speakers
- Price
- $21.84
- Rating
- 4.5/5
- Reviews
- 328
- Age
- 3y ago

DAJUNGUO S600X 2.1 Channel Amplifier Board 300W+300W+600W Power Output TPA3255 Chip Bluetooth 5.2 Black
- Price
- $65.48
- Rating
- 4.3/5
- Reviews
- 213
- Age
- 1y ago
Newest
by launch date
Romicta 2.1 Channel Stereo Audio Amplifier 300Wx2+360W Home Audio Stereo Receiver Bluetooth 5.0 with USB/AUX Remote Bass Treble & Sub Control for Active/Passive Subwoofer & Speaker
- Price
- $48.27
- Rating
- 4.2/5
- Reviews
- 731
- Age
- 7mo ago

Fosi Audio BT30D Pro Bluetooth Subwoofer Amplifier 2.1 Channel Amplifier 165W x 2 + 350W TPA3255 Chips Bass Treble Control for Desktop Outdoor Bookshelf Speakers with 48V Power Supply
- Price
- $149.72
- Rating
- 5.0/5
- Reviews
- 1
- Age
- 1y ago

ZK-HT21 Bluetooth Amplifier Board 160W2+220W Subwoofer 2.1 Channel Audio Amplifier Bluetooth Module with Treble and Bass Control AUX/Bluetooth/USB Inputs for Passive Speakers
- Price
- $32.20
- Rating
- 4.1/5
- Reviews
- 44
- Age
- 1y ago

100W+100W+200W Power Amplifier Board TPA3221 Chip with BluetoothAUX and USB Inputs 2.1 Channel Audio Power Amplifier (S200HS-W)
- Price
- $37.10
- Rating
- 4.5/5
- Reviews
- 29
- Age
- 1y ago

DAJUNGUO S600X 2.1 Channel Amplifier Board 300W+300W+600W Power Output TPA3255 Chip Bluetooth 5.2 Black
- Price
- $65.48
- Rating
- 4.3/5
- Reviews
- 213
- Age
- 1y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 83% of clicks. A locked shelf that new listings rarely crack.
Brands
6 rising
Sellers
10
Est. top-5 brand share
97%
Top 20: 100%
Est. top-5 click share
83%
Top 20: 100%
Open market
0%
- Fosi Audio78%
- Hosyond7%
- Romicta5%
- ODEKTOOY4%
- DAJUNGUO3%
- AEXCVG3%
Demand
2.1 Amp search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jun, Jul · busiest ÷ quietest = 1.9× · 11 of 12 months tracked
Search terms
Top 2.1 Amp search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- 2.1 bluetooth amplifier24K/yr
- fosi audio bt30d pro8K/yr
- 2.1 amp10K/yr
- fosi bt30d pro6K/yr
- fosi audio bt30d4K/yr
- fosi bt30d4K/yr
- bt30d pro3K/yr
Reviews and returns
What reviews say buyers love and hate about 2.1 Amp
We read the reviews and the return reasons for every product selling here.
“Really dissapointed with this amp”
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 2.1 Amp 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









