HiFi Audio Knob | Precision CNC Machined Knobs
CHX Metal (Shenzhen Changhexin Precision Hardware) manufactures HiFi audio knobs — aluminum, anodized with premium finish — at ±0.005mm tolerance for high-end audio brands. ISO 9001:2015 certified. The factory covers 5,000 m2 and produces up to 5 million precision parts per month.
Knobs We Make
- Volume knobs
- Selector knobs
- Encoder caps
- Custom shapes
Finish
- Type II/III anodizing
- Sandblasting
- Laser engraving
- Color anodizing
Precision
±0.005mm tolerance for precise fit and smooth rotation feel.
Quality
ISO 9001:2015 certified with cosmetic inspection.
Frequently Asked Questions
What audio knobs do you make? Volume knobs, selector knobs, encoder caps and custom shapes.
What finishes? Type II/III anodizing, sandblasting, laser engraving and color anodizing.
What tolerance? ±0.005mm for precise fit and rotation feel.
Do you handle cosmetic parts? Yes. Cosmetic inspection standards for visible surfaces.
Get a Quote → Upload your drawing/3D model for a process plan and quotation within 24 hours.
Materials & Specifications
We machine HiFi audio knobs from 6061/7075 aluminum, brass, POM. Typical accuracy is ±0.005mm for smooth rotation feel. Parts are manufactured to your 2D drawing or 3D model, in sizes from a few millimeters up to 1000mm envelopes, from single prototypes to hundreds of thousands of pieces per year.
Typical Applications
- volume and selector knobs
- encoder caps
- custom engraved controls
These are representative examples; we regularly take on custom geometries outside this list. Send your drawing for a feasibility check.
Our Machining Capability
Production runs on 3-axis and 5-axis vertical machining centers, CNC lathes, and Swiss-type automatic lathes. Fixtures are designed in-house for repeatable clamping, and programs are simulated before cutting to protect tight tolerances. Every order ships with in-process inspection records. Our CMM verifies critical dimensions against your drawing on first article, at batch start, and at final release. Material certificates (EN 10204 3.1) and full dimensional reports come standard; PPAP and FAIR documentation are available on request for automotive and industrial programs.
Surface Finishing Options
Available finishes include Type II and Type III anodizing (clear, black, and custom colors), sandblasting, wire drawing, laser engraving and silk-screen marking, zinc and nickel plating, passivation, and black oxide. Cosmetic parts are inspected under standardized lighting with defined surface criteria.
MOQ, Lead Time & Packaging
Standard lead time is 3-7 days for prototypes and 7-15 days for production batches, with surface treatment adding 5-10 days. Parts are cleaned, protected against corrosion and scratching, and packed in customized trays or EPE foam for international shipping. DFM feedback on RFQs is returned within 24 hours.
Why Choose CHX Metal
One supplier from drawing to finished part: milling, turning, 5-axis and Swiss-type machining are all in-house, together with anodizing, plating, laser marking, and silk-screen coordination. You get one accountable partner instead of a chain of subcontractors.
