6.35mm to 3.5mm Stereo Audio Adapter – Gold-Plated 1/4" to 1/8" Headphone Jack Converter

Connect your 3.5mm headphones, earphones, or audio devices to any 6.35mm (1/4") audio jack — including digital pianos, keyboards, guitar amplifiers, mixers, and home theatre systems. Solid brass construction with gold-plated connectors for reliable, high-quality stereo audio.

Key Features

• ✅ Gold-Plated Connectors – Resist corrosion, minimize signal loss, and ensure long-term reliability.
• ✅ Solid Brass Construction – Far more durable than plastic adapters; built to last.
• ✅ 360° Knurled Grip – Gear-ground treads for easy, secure plugging and unplugging.
• ✅ Stereo TRS – Full stereo audio pass-through with no active processing or signal loss.
• ✅ Plug & Play – No drivers or power required. Simply connect and listen.

Wide Compatibility

6.35mm (1/4") devices supported: Yamaha pianos (DGX 660/670), Roland digital pianos, Casio keyboards, Alesis keyboards, Behringer mixers, guitar amplifiers, bass amplifiers, recorders, mixing consoles, home theatre AV receivers, and other 6.35mm audio equipment.

3.5mm devices supported: Sony/Bose headphones, earphones, headsets, Hi-Fi systems, speakers, soundbars, iPhone, iPad, iPod, MacBook Pro, Samsung Galaxy, tablets, MP3/MP4 players, and Smart TVs.

Specifications

Frequently Asked Questions

Q1: What is this adapter used for?
A: It allows a device with a 6.35mm (1/4") audio jack to connect with headphones, earphones, or other audio equipment using a 3.5mm (1/8") plug.

Q2: Can I use it with headphones, and will it affect sound quality?
A: Yes. It connects 3.5mm headphones to 6.35mm jacks. As a passive adapter with no active processing, it passes the stereo audio signal without noticeable changes when used with compatible equipment.

Q3: Can I use it with a guitar, amplifier, digital piano, or keyboard?
A: Yes. It is compatible with 6.35mm audio outputs on guitars, guitar amplifiers, digital pianos (e.g. Yamaha, Roland, Casio), keyboards, and mixers. The exact setup depends on the device’s signal requirements.

Q4: Is this adapter stereo?
A: Yes. It is designed for stereo TRS audio connections. Note: microphone functions on TRRS headsets (4-pole) may not work — headphone audio should function, but mic and button controls are not guaranteed.

Q5: Can I use it for a microphone?
A: This adapter is primarily intended for stereo audio connections. Microphone signal conversion is not supported and should not be assumed.

Q6: Does this adapter convert digital audio to analog?
A: No. It is a passive physical connector and does not contain a DAC, amplifier, or any digital audio converter.

Q7: Can I use it in both directions?
A: The adapter has a 6.35mm female jack and a 3.5mm male plug. Use it according to your equipment’s connector configuration rather than assuming universal bidirectional compatibility.

Q8: Will it fit securely?
A: A properly matched 6.35mm jack provides a secure connection. The 360° knurled grip makes plugging and unplugging easy. Fit may vary slightly depending on device tolerances.

Q9: What should I check before purchasing?
A: Confirm your device has a 6.35mm jack and your headphones or audio equipment use a compatible 3.5mm stereo (TRS) plug. Also verify whether your setup requires stereo, mono, balanced, or microphone connections.