1. Introduction
The AKG K612 PRO are over-ear, open-back reference studio headphones designed for professional monitoring and critical listening. They feature AKG's Varimotion diaphragm technology for accurate sound reproduction and a natural soundstage. The design prioritizes comfort for extended use, incorporating a self-adjusting leather headband and velour ear pads. With an open-back acoustic design, these headphones provide a spacious sound experience. They have a frequency response of 12 Hz to 39500 Hz and a rated impedance of 120 Ohms, capable of handling up to 200mW input power. The headphones include a 10-foot cable and a 3.5mm to 6.3mm screw-on adapter for versatile connectivity.
Video: Overview of the AKG K612 PRO Reference Studio Headphones, highlighting key features and design elements.
2. What's in the Box
- 1 x AKG K612 PRO Headphones
- 1 x 3.5mm (1/8-inch) to 6.3 mm (1/4”) screw-on adapter
3. Setup
3.1 Unpacking
Carefully remove the headphones and all accessories from the packaging. Inspect for any signs of damage. Retain the packaging for future storage or transport.
Image: Top-down view of the AKG K612 PRO headphones, showing the open-back design and headband.
3.2 Connecting the Headphones
- Identify the audio output port on your source device (e.g., audio interface, amplifier, computer). This is typically a 3.5mm (1/8-inch) or 6.3mm (1/4-inch) jack.
- If your source device has a 3.5mm jack, connect the headphone's 3.5mm plug directly.
- If your source device has a 6.3mm jack, screw the included 3.5mm to 6.3mm adapter onto the headphone's 3.5mm plug, then insert it into the 6.3mm port.
- Ensure the connection is secure.
Note on Impedance: The AKG K612 PRO headphones have a 120 Ohm impedance. For optimal volume and sound quality, especially with lower-power devices, a dedicated headphone amplifier may be beneficial.
3.3 Adjusting for Comfort
The K612 PRO features a self-adjusting leather headband. Place the headphones on your head, and the headband will automatically adjust to provide a comfortable and secure fit. The velour ear pads are designed for extended wear.
Image: The AKG K612 PRO headphones showcasing the self-adjusting leather headband and comfortable velour ear pads.
4. Operating Instructions
4.1 Basic Listening
Once connected to your audio source, begin playback. Adjust the volume using your source device's controls. The K612 PRO headphones do not have integrated volume controls.
4.2 Understanding the Open-Back Design
The open-back design of the K612 PRO allows air to pass through the earcups, contributing to a more natural and spacious soundstage. This design also means that sound can leak out of the headphones, and you will be able to hear ambient sounds from your environment. This is normal for open-back headphones and is part of their acoustic characteristic, making them suitable for studio environments where natural sound is preferred over isolation.
Image: Side view of the AKG K612 PRO headphones, illustrating the sophisticated open technology for spacious sound.
4.3 Varimotion Diaphragm Technology
The patented Varimotion Diaphragm Technology contributes to the headphones' high-quality sound imaging and tonal accuracy. This technology optimizes the diaphragm's movement for precise audio reproduction across the frequency spectrum.
Image: Close-up of the AKG K612 PRO earcup, detailing the Varimotion diaphragm technology.
4.4 Over-Ear Design
The over-ear design ensures that the earcups fully enclose your ears, providing a comfortable fit and contributing to the headphones' acoustic performance. This design is intended for maximum wearing comfort during long listening sessions.
Image: The AKG K612 PRO headphones from an angle, highlighting the over-ear design for comfort.
5. Maintenance
5.1 Cleaning
- Ear Pads: The velour ear pads can be gently cleaned with a soft, dry cloth. For deeper cleaning, lightly dampen a cloth with mild soap and water, wring it thoroughly, and gently wipe the surface. Allow to air dry completely before use. Do not immerse in water.
- Headband and Arches: Wipe the leather headband and aluminum arches with a soft, dry cloth. Avoid harsh chemicals or abrasive cleaners.
- Cable: Keep the cable clean and free from kinks. Wipe with a dry cloth as needed.
5.2 Storage
Store the headphones in a clean, dry place away from extreme temperatures, humidity, and direct sunlight. Avoid placing heavy objects on the headphones to prevent damage to the headband or earcups. The non-detachable 10-foot cable should be coiled loosely to prevent tangling and stress on the connection points.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound or very low volume |
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| Distorted or poor sound quality |
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| Uncomfortable fit |
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7. Specifications
| Feature | Detail |
|---|---|
| Model Name | K612 PRO |
| Connectivity Technology | Wired |
| Headphones Jack | 3.5 mm Jack |
| Included Components | 1 x K612 PRO Headphones, 1 x 3.5mm (1/8-inch) to 6.3 mm (1/4”) screw-on adapter |
| Material | Aluminum, Leather |
| Specific Uses For Product | Professional Audio Monitoring, Hi-Fi Listening |
| Compatible Devices | Laptops, Desktops, Tablets, Cellphones, Music Production Equipment, Gaming Consoles |
| Cable Feature | Non-detachable, 10-foot length |
| Item Weight | 1.46 pounds (0.66 kg) |
| Product Dimensions | 9.8 x 8.8 x 4.3 inches (24.9 x 22.4 x 10.9 cm) |
| Earpiece Shape | Over-ear |
| Audio Driver Type | Dynamic, with Varimotion Diaphragm Technology |
| Impedance | 120 Ohms |
| Max Input Power | 200 Milliwatts |
| Frequency Bandwidth | 12 Hz – 39500 Hz |
| Color | Black |
| Special Feature | Lightweight, Self-adjusting headband |
8. Warranty and Support
AKG products are designed and manufactured to high standards and are covered by a manufacturer's warranty. For specific warranty terms and conditions, including duration and coverage, please refer to the official AKG website or the warranty card included with your product.
For technical support, service, or replacement parts, please visit the official AKG support website or contact their customer service department. Keep your purchase receipt as proof of purchase for warranty claims.
Online Support: www.akg.com/support
