9v power supply
Skip itSoft demand (-1.0% this quarter) — this niche doesn't clear our bar today.
Conversion
Great10.1%search→purchase rate — share of searches ending in a sale
Price range
Good$5.74–$36.04cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good70%top-5 brand share — brands hold most of the demand
Market size
Good$283K$283K/yr · 244K searches
Returns
Okay3.2%return rate — above 5% kills the launch gate
Avg price
Okay$11.51avg listing price — sweet spot $15–$100
Review moat
Okay2,214.33avg incumbent reviews — the moat a new listing must climb
Competition
Okay61%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Growth
Bad-1.0%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, 9v power supply is a $283K/yr Amazon United States market (244K searches/yr). The top 5 brands hold 70% of demand. Demand peaks in Dec. Verdict: Skip it — 48/100.
Data updated Jul 9, 2026 · scored weekly · How we score niches
9v power supply market data
- Units sold / yr
- 25K–30K
- avg 1,000–1,250/product
- Revenue / yr
- $288K–$345K
- units × avg price
- Conversion rate
- 10.1%
- Avg BSR
- #49
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 81%
- Out of stock
- 0.0%
- Avg brand age
- 55 months
- Avg seller age
- 194 days
Competition & brand share
The top 5 products take 61% of clicks — established leaders, but buyers still shop beyond them.Brands
17 rising
Sellers
40
Top-5 brand share
70%
Top 20: 100%
Top-5 click share
61%
Top 20: 99%
Open market
25%
- JOYO21%
- WUKUR18%
- D'Addario17%
- GuanTing9%
- Cysljoyful6%
- JOVNO5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -1.0% search growth over the last 90 days.Peak months: Dec · busiest ÷ quietest = 1.4×
Top 9v power supply search terms
- 9v power supply70K/yr
- 9v dc power supply31K/yr
- 9v power adapter15K/yr
- 9v power supply for guitar pedals18K/yr
- 9v pedal power supply11K/yr
- 9v ac adapter14K/yr
- 9v adapter11K/yr
- 9 volt power supply8K/yr
- 9v dc power adapter4K/yr
- dc9v power cord7K/yr
Top 9v power supply 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 21 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
WUKUR 9V Power Supply for Guitar Pedals Compatible with Boss PSA Adapter 9V DC for Pedals Like ME-80 ME-70 ME-25 GT-100 GT-1 GT-10 BR-80 RC-1 RC-3 5.9FT/1.8M Guitar Pedal Power Cable for Effects
WUKUR$10.004.6★3,169 rev
DAddario Accessories PW-CT-9V DC Power Adapter Pedalboard Supply - For Pedal Board and Other Devices Requiring 9V 800mA Max Current
D'Addario$13.114.6★16,887 rev
JOYO DC 9V 500mA Guitar Pedal Power Supply Adapter AC Wall Charger Adapter One Spot 5.5mmX2.1mm Compatible for Most Effect Pedals (Tip Negative)
JOYO$9.414.7★320 rev
AC Adapter 9V 2A Power Supply AC110V to DC9V 2000mA 1500mA 1000mA 500mA Power Driver 8 DC Plug Tips 9 Volt Converter Inverter Charger Transformer ac dc Adapter
GuanTing$8.494.5★1,378 rev
JOYO DC 9V Guitar Pedal Power Supply (800mA -1A) AC Wall Charger Adapter with 4 Way Daisy Chain Pedal Cables (8.8 FT) Compatible for Most Effect Pedals (Tip Negative)
JOYO$12.374.6★2,144 rev
Newest
by launch date
9V AC Adapter 9Volt 1Amp DC Power Supply 100-240V 50/60Hz to DC 9V Power Cord 10FT 5.5x2.5mm Plug with1 Reverse Polarity Converter Cable Compatible with Electronic Devices Below 1A 9W
Litbla$5.7429 rev
Guitar Pedal Power Supply 9V DC 1A BOSS PSA Adapter DC 9V Power Supply Cord for Most Brands of Guitar Affect Pedals Keyboard & Required 9 Volt 1000mA 800mA 500mA - Center Negative - 6.6FT
JOVNO$7.7343 rev
Dexpt DC 9V Power Supply for Guitar Pedals 9V 1A Adapter Fit for Boss PSA-120S ME-90 ME-80 RC-5 RC-30 RC-505 GT-1 GT-1B DS-1 Effects Pedals - UL Listed Low Noise Center Negative Power Cord
Dexpt$8.3072 rev
Universal Power Supply 3V~24V 3A 72W Adjustable Variable 3V 5V 9V 12V 18V 20V 24V AC/DC Adapter Charger 100V-240V AC to DC Converter with 14 Tips Polarity Converter and 4-Way Power Splitter Cable
Wefomey$17.99602 rev
JOYO DC 9V 500mA Guitar Pedal Power Supply Adapter AC Wall Charger Adapter One Spot 5.5mmX2.1mm Compatible for Most Effect Pedals (Tip Negative)
JOYO$9.41320 rev
Trending
90-day click momentumUniversal Power Supply 3V~24V 3A 72W Adjustable Variable 3V 5V 9V 12V 18V 20V 24V AC/DC Adapter Charger 100V-240V AC to DC Converter with 14 Tips Polarity Converter and 4-Way Power Splitter Cable
Wefomey$17.994.5★
NC 9V 2000mA Power Supply 100-240V AC to 9Volt DC 2A Switching Supply Power Adapter 5.5 X2.52.1mm US Plug AC Adapter Transformer Wall Adapter Black
NC$7.484.4★
Guitar Pedal Power Supply 9V DC 1A BOSS PSA Adapter DC 9V Power Supply Cord for Most Brands of Guitar Affect Pedals Keyboard & Required 9 Volt 1000mA 800mA 500mA - Center Negative - 6.6FT
JOVNO$7.734.6★
AZOR Guitar Effect Pedal Power Supply Adapter AC DC 9V Power Cord Fit for 9V1A Guitar Effects Pedal Keyboard Center Negative
AZOR$6.624.6★
JOYO DC 9V 500mA Guitar Pedal Power Supply Adapter AC Wall Charger Adapter One Spot 5.5mmX2.1mm Compatible for Most Effect Pedals (Tip Negative)
JOYO$9.414.7★
What buyers say about 9v power supply
What buyers praise and complain about, mined from review topics.What buyers love
“As advertised”
“Good price”
“The build quality feels solid”
“Universal works great”
“charger”
“It is compatible with all of my pedals”
“Very Handy”
“Works well with low noise”
“Now I can save on batteries”
“No issues, solidly built”
What buyers complain about
“they all make noise”
“It did not power up”
“It does not charge one single item”
“Died first use”
“I would not recommend buying this as quality control is lacking”
“Unfortunately, this product didn't have the compatible tip for it”
“Didnt fit for my speaker”
“ruin your item connected”
“there very reliable just wish they were rated for more amps for different applications like 20 amp dc pumps”
“Cheap fire hazard”
Top return reasons
Common questions
- Is 9v power supply profitable to sell on Amazon United States?
- The niche generates $283K/yr across 21 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -1.0%. Flapen's verdict: Skip it (48/100).
- How competitive is the 9v power supply niche?
- 17 brands and 40 sellers compete. The top 5 products take 61% of clicks and top 5 brands hold 70% of demand.
- What do buyers complain about in 9v power supply?
- Top complaints mined from reviews: Noise Level, Functionality-Overall, Charging. The return rate is 3.2%.
- When does demand for 9v power supply peak?
- Demand peaks in Dec; the busiest month runs 1.4× the quietest.
- What does it cost to enter the 9v power supply niche?
- Listings span $5.74–$36.04; the average listing price is $11.51 (sweet spot $15–$100). The average incumbent carries 2,214 reviews — the moat a new listing must climb.