My Yahmaha amplifier has flip/squeeze plugs, not the round ones I'm seeing here. Will these work?

I tried it on a flip style and they were too big. The measurement of the plug is 0.15" or 3.85mm at the tip, at the widest 0.20" or 5.3mm. Your flip connectors may be larger than my example, a quick msr of the max gauge wire you can use will answer.

Has anyone tried to solder wires into these connectors for a better connection?

We have personally not done so, but other customers have done so to make their own cables and plugs. So it is quite possible to solder them. Since we have not done so ourselves, I cannot speak on the quality connection, but we have not heard any complaints for those that have. Hope this helps!

Are the outer sleeves/barrel "holding in place" after they're securely tighten? I have similar plugs from other company that "unscrew" themselves

They have not given me any connection problems so far after several months of use, but I went to check them after I saw your question. All the outer sleeves of the plugs inserted into my receiver were loose, a few (not all) going into the wall plates were loose, and none going into any of the speakers were loose. No explanation for how or why this occurred.

Yes you are correct, this is a 4mm Banana plug.

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FosPower Banana Plugs 12 Pairs / 24 pcs, Closed Screw 24K Gold Plated Speaker Plug Connectors for Speaker Wire, Wall Plate, Home Theater, Audio/Video Receiver, Amplifiers and Sound Systems

FosPower Banana Plugs 12 Pairs / 24 pcs, Closed Screw 24K Gold Plated Speaker Plug Connectors for Speaker Wire, Wall Plate, Home Theater, Audio/Video Receiver, Amplifiers and Sound Systems

Product ID: 45952083

Details

Brand
FosPower
Cable Type
AUX
Compatible Devices
Amplifier
Connector Type
Usb
Special Feature
24k gold

🔧Dual screw secure fit

🟡24K gold corrosion-resistant plating

🎚️Supports 12-18 AWG wire sizes

42335CFA

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Description

🎧 Plug into perfection — secure your sound, secure your status.

UNIVERSAL COMPATIBILITY - Fits 12 to 18 AWG speaker wires, perfect for all your home theater and A/V setups.
PREMIUM 24 K GOLD PLATING - Corrosion-resistant connectors ensure crystal-clear audio signal transmission every time.
COLOR CODED FOR PRECISION - Instant polarity identification eliminates wiring errors and boosts setup confidence.
LIFETIME BACKED PERFORMANCE - Limited lifetime warranty means these plugs are built to last as long as your sound system.
EFFORTLESS PRO GRADE INSTALLATION - Dual screw design locks wires in place for zero slip and ultimate reliability.

FosPower Banana Plugs come in a 12-pair set featuring closed screw dual retention for a rock-solid connection. Their 24K gold plating resists corrosion, ensuring premium audio fidelity. Compatible with 12-18 AWG speaker wires and color-coded for easy polarity matching, these plugs are ideal for home theaters, amplifiers, and surround sound systems. Backed by a limited lifetime warranty, they combine professional-grade durability with effortless installation.

Specifications

ASIN	B06Y8YL2DM
Best Sellers Rank	#1 in Speaker Repair Products
Brand Name	FosPower
Cable Type	AUX
Color	12 Pairs
Compatible Devices	Amplifier, Speaker, Television
Compatible Phone Models	Jack
Connectivity Technology	Auxiliary
Connector Gender	Male
Connector Type	Usb
Customer Package Type	Standard Packaging
Customer Reviews	4.6 4.6 out of 5 stars (23,038)
Ethernet Cable Category	Cat 5
Gauge	18
Indoor Outdoor Usage	Indoor, Outdoor
Item Shape	Round
Item Weight	0.27 g
Manufacturer	FosPower
Maximum Voltage	30 volts
Model	FOSCBL-2313
Model Name	FosPower Banana Plugs
Number of Items	12
Number of Pins	1
Other Special Features of the Product	24k gold plated
Outer Material	Metal
Part Number	FOSCBL-2313
Recommended Uses For Product	For use with speakers, A/V receivers, amplifiers, surround sound systems, and banana wall plates that use banana style binding posts
UPC	813154023135

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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42335CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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