ANDTOBO
ANDTOBO 1/4'' to 3.5 mm Stereo Pure Copper Headphone Adapter
Bottom line: The ANDTOBO 1/4'' to 3.5 mm Stereo Pure Copper Headphone Adapter ($8.95 on Amazon as of 2026-10-21 20:16 UTC): Pure copper contacts resist corrosion and cut signal loss versus thin gold plating; main trade-off: adapts 3.5mm male to 6.35mm female only - no reverse direction in this pack.
As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →
*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Pure copper contacts resist corrosion and cut signal loss versus thin gold plating
- ✓ Ships as a 2-pack, so you can leave one at the amp and one in the bag
- ✓ Lifetime warranty from ANDTOBO covers the pair
- ✓ Stereo wiring works with headphone amps, mixers, and karaoke systems
Cons
- ✗ Adapts 3.5mm male to 6.35mm female only - no reverse direction in this pack
- ✗ Requires the 3.5mm plug be seated fully or you get mono or dropout
- ✗ Passive adapter: adds no gain, so high-impedance cans still need an amp
- ✗ Rigid barrel body adds leverage at the jack versus a short pigtail cable
Manufacturer description
The ANDTOBO 1/4-inch to 3.5mm headphone adapter solves a problem every headphone owner eventually hits: your studio monitors, amp, mixer, or karaoke machine has a 6.35mm jack, and your headphones end in a 3.5mm plug. This 2-pack bridges that gap with a 3.5mm (1/8-inch) male plug on one end and a 6.35mm (1/4-inch) female jack on the other, so you can run standard earbuds or headphones into gear built for full-size connectors. ANDTOBO builds the contacts from pure copper rather than plastic housings with thin gold plating, which resists corrosion and keeps signal loss to a minimum across the…
SpecPicks Verdict
SpecPicks scored ANDTOBO 1/4'' to 3.5 mm Stereo Pure Copper Headphone Adapter using a rating × review-volume × price-fit model applied to published specs and reviews across the accessories category. ANDTOBO's accessories lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for accessories of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Does this convert 3.5mm headphones to a 1/4-inch amp jack?
Yes. The 3.5mm (1/8-inch) end is the male plug that your headphone cable does not have; you plug your headphone's 3.5mm plug into the 6.35mm (1/4-inch) female jack side, then the adapter's 3.5mm male end goes into 3.5mm equipment. Check the listing photos against your gear before ordering.
Is it stereo or will I only get sound in one ear?
It is wired for stereo. If you hear only one channel, the ANDTOBO instructions note the 3.5mm port must be fully inserted - a partially seated plug is the usual cause of one-sided audio.
How many adapters come in the package?
Two. It ships as a black 2-pack, which makes it a budget-friendly way to get a spare. Price and availability change, so confirm on the product listing.
What is it made of, and why does that matter?
Pure copper connectors rather than plastic with a gold-plated shell. ANDTOBO states the copper build outlasts plated alternatives, and copper contacts resist corrosion, which keeps signal loss minimal over time.
What gear does this work with?
Earphones, headphones, karaoke systems, and headphone amps - anything pairing a 3.5mm connection with a 6.35mm jack. It is a passive stereo adapter, so it carries left and right audio but does not pass a headset microphone channel.
Key Features
- Work for for 3.5mm jack equipment,Connect 3.5mm Male to 6.35mm Female（1/8" male to 1/4" female adapter）, allows you connect headphones to audio devices
- made of pure copper and its service life is much longer than plastic and gold plating.Please ensure that the 3.5mm port is fully inserted.
- Pure copper connectors resist corrosion and ensure minimal signal loss.
- Handy and portable, widely work with earphone, headphone, karaoke system and etc
- 100% Lifetime warranty,and friend customer service.
Full Specifications
| Brand | ANDTOBO |
|---|---|
| Color | 1/4'' Famale to 3.5mm Male |
| Finish | Metallic |
| Unit Count | 2 Count |
| Finish Type | Metallic |
| Model Number | 8541768024 |
| Input Voltage | 220 volts |
| Warranty Type | Lifetime |
| Connector Type | Stereo Audio |
| Mfr Part Number | 8541768024 |
| Number of Items | 2 |
| Number of Ports | 1 |
| Power Plug Type | No Plug |
| Compatible Devices | Smartphone, Speakers, Headphones, Guitar, Digital Piano, Amplifiers, Audio Mixer, Sound Console, MP3, Tablet, PC, DVD Player, CD Player |
| External Testing Certification | Não aplicável |
| Full listing title | ANDTOBO 1/4'' to 3.5 mm Stereo Pure Copper Headphone Adapter, 3.5 mm(1/8'') Plug Male to 6.35 mm (1/4'') Jack Female Stereo Adapter for Headphone, Amp Adapter, Black 2-Pack |
Ready to buy?
ANDTOBO 1/4'' to 3.5 mm Stereo Pure Copper Headphone Adapter, 3.5 mm(1/8'') Plug Male to 6.35 mm (1/4'') Jack Female Stereo Adapter for Headphone, Amp Adapter, Black 2-Pack is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
Related Accessories
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- How to Build a Windows 98 Retro PC in 2026
- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- Best 1440p Gaming GPUs in 2026
- Best Retro Handhelds in 2026 — From $35 to $500
More reviews from the SpecPicks archive
Browse all reviews →- Open-WebUI on an RTX 3060: A Self-Hosted ChatGPT in 2026
- Best AM4 Upgrade Parts Under $100 Each in 2026
- Imaging Your Big-Box CD-ROM Collection: A CompactFlash + IDE Workflow
- Cloning a Win98 Voodoo3 Boot Drive: SATA-IDE Adapter Workflow
- Ring Light vs LED Strips: What Actually Fixes a Grainy Webcam
- Local LLM Image Generators: Best AMD GPUs in 2025
- Best SSD for Steam Deck and Handheld PCs in 2026
- What Non-Gaming Tasks People Actually Run on Steam Deck
- Forza Horizon 6 on Steam Deck: Best Dock and Controller Setup for 2026
- Best Single-Board Computer Kits for Beginners (2026)
- Raspberry Pi 5 Price Guide: What You'll Actually Pay
- Ryzen 5 2600 vs Ryzen 9 3900X: Do 12 Cores Buy CPU-Only 8B Inference?
- ZOTAC RTX 3060 Twin Edge vs MSI Ventus 2X: Which 12GB Card for a Quiet Build?
- Raspberry Pi 4 8GB vs Pi Zero W for RetroPie: Which Board Wins?
- Forza Horizon 6 Advanced Shader Delivery: 4-Second Loads vs 90 Seconds Explained
- Best Webcam for PC Game Streaming Under $100 (2026)
- Raspberry Pi OS Gets a Desktop Refresh: What Changes for Pi 4 Users
- RTX 4080M Desktop Build: 100W Gaming vs. RX 9070 GRE
- Build a RetroPie Arcade on a Raspberry Pi 4 8GB in 2026
- Can the RTX 3060 12GB Still Game at 1440p in 2026?
- Intel llm-scaler-vllm PV 1.4 Adds Arc Pro B70 Support: What Local-LLM Builders Get
- 180Hz 1440p Monitors Hit Entry Pricing — Here's How the 4K Tier Compares
- Best GPU for a NAS or Homelab Running Local LLMs (2026)
- Sound Blaster Audigy FX vs SoundBlasterX G6: Picking a Card for a 2002-2008 Era Build
Earliest SpecPicks reviews
Browse full archive →- Best GPU for Llama 3.1 8B (2026)
- Best GPU for Qwen 3 14B (2026)
- Best GPU for Qwen 3 32B (2026)
- Best GPU for Llama 3.1 70B (2026)
- Best GPU for DeepSeek-R1 32B (2026)
- Best GPU for Llama 3.1 405B (2026)
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 14B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 70B on NVIDIA GeForce RTX 5090
- How to run DeepSeek-R1 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 4090