Can it take a 1/4 mono signal and split it into L/R channels on the 1/8 plug?

No, you need a purpose built adapter for that.

Is this cable 12"tip to tip, or is is a 12" cable?

Tip to tip length is 14.25" . I don't know where the 12" measurement comes from, but the cable length itself (minus both connectors length) is 10.5" Hope this helps.

Does this work for a talkbox?

This is a passive adapter which simply allows an audio cable with a male 1/4in. connector to be plugged into any audio device having a 1/8in. socket. There is every reason to believe that it will work with a "Talk Box" if that device needs such an adapter.

Can this work in either direction, i.e., 3.5mm to ¼" as well as ¼" to 3.5mm?

Dear Amazon Customer, Yes, this MillSO 1/4 to 3.5mm adapter can work in either direction (3.5mm to ¼" as well as ¼" to 3.5mm). Thank you for your question. Hope this answer will help you, if you have any other concerns, please contact us via support@millso.com, we will always be more than happy to assist you. Best regards MillSO Technical Support Team

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MillSO 1/4 to 3.5mm Headphone Adapter, TRS 6.35mm Female to 3.5mm Male 1/8 to 1/4 Stereo Audio Adapter for Amplifiers, Guitar, Piano, Home Theater Devices to Phone, Laptop, Headphones - 12inch/30cm

Product ID: 143750033

Details

Brand
MillSO
Color
Blue
Connector Type
1/4" to 3.5mm
Specific Uses For Product
Amplifier

🎧6.35mm female to 3.5mm male TRS adapter

💪Sapphire Blue metal housing for durability

🔗24K gold-plated connectors for lossless audio

¥3015

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In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎶 Elevate your sound game—connect like a pro, anywhere, anytime!

SEAMLESS AUDIO BRIDGE - Effortlessly connect professional gear to everyday devices without signal loss.
PLUG PLAY CONVENIENCE - No drivers or extra accessories needed—just reliable, instant audio transfer.
SHIELDED FOR PURE SOUND - Advanced quad-layer shielding eliminates interference for studio-quality clarity.
RUGGED SAPPHIRE BLUE HOUSING - Built to withstand daily wear with stylish, anti-corrosion metal casing.
PREMIUM GOLD PLATED CONNECTORS - Experience crystal-clear sound with corrosion-resistant 24K gold contacts.

The MillSO 1/4 to 3.5mm Headphone Adapter is a 12-inch (30cm) stereo TRS cable that converts 6.35mm female ports to 3.5mm male plugs, enabling seamless audio transfer between professional audio equipment and consumer devices. Featuring 24K gold-plated connectors, sapphire blue metal housing, and quad-layer shielding, it ensures durable, lossless, and interference-free sound. Perfect for musicians, audiophiles, and home theater enthusiasts seeking reliable, plug-and-play connectivity backed by an 18-month warranty and lifetime support.

Specifications

ASIN	B07SRWZ77L
Best Sellers Rank	#17,125 in Electronics ( See Top 100 in Electronics ) #307 in Headphone Adapters
Brand	MillSO
Color	Blue
Compatible Devices	Headphone, speaker, electronic keyboard, Audio mixer, amplifiers, electric guitar amp/piano, stereo system, mixing console
Connector Type	1/4" to 3.5mm stereo audio TRS
Customer Reviews	4.6 4.6 out of 5 stars (3,049)
Finish	Gold
Item Weight	18.14 g
Manufacturer	MillSO
Mfr Part Number	YytcM35F635UUs30Cm
Model Number	M35-F635-30
Number of Items	1
Number of Ports	2
Package Quantity	1
Power Plug Type	No Plug
Specific Uses For Product	Amplifier,Speaker
Unit Count	1 Count
Warranty Description	MillSO offers a 12-month Unconditional Warranty for all our products to guard against any quality trouble. Please feel free to contact our warm 24-hour customer support team if you need any help.
Warranty Type	Extended

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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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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¥3015

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

View all Trustpilot reviews