HIFI Headphone Amplifier Portable Ultra-Class A (Class AA) Circuit OPA2604 plus LM4562 320Mw 16 ~ 300 ohms Lithium Battery Ultra-thin Body (Model No: WETA-BAA200)
This is a portable headphone amplifier, personalized design, all aluminum casing, ultra-thin body. Circuit structure used a ultra-Class A (Class AA) circuit, because voltage amplifier stage of Class AA headphone amplifier is equivalent to a no-load state, no matter how the load followed by the headset, it will not affect the voltage amplifier stage of work, which is common Amplifiers can not achieve that status. As results, it will make a very real interpretation of the music, space and very good positioning performance, and efforts to extend the sense of sound performance; it is just a little weird. In addition, we use HIFI grade components and process to make it, and bring a better listening experience.
Colors options
Selection aspect of the op amp, we used OP IC OPA2604 plus LM4562 match, we passed several tests comparing those match, we find that they can complement each other; If the preamp use OPA2604, and power stage use LM4562, we tested them with a 20KHz square wave, which output waveform distortion is very small. From the listening sensation, LM4562 relatively straightforward, OPA2604 more beautiful
Audiophiles had asked me, or whether the device or circuit determines the sound quality? In our experience, the answer is, circuit design, technology and debugging is more decide sound, HIFI devices, op amp selection and personalized tone tuning more define Timbre. It is so-called HIFI to focus on quality, high-fidelity idea. The HI-END is integrated personalized tuning philosophy into the trend to the highest HIFI level.
Features
1. Personalized design, all-aluminum casing, and ultra-thin body.
2. Ultra Class A circuit design with circuit board Immersion Gold process, sophisticated technology.
3. HIFI "Sibi" tantalum capacitors, Phi lips electrolytic axial capacitors, Red WMA audio capacitors, gold-plated 3.5mm headphone jack.
4. Gold-plated op amp socket for easy replacement of different styles of op amp.
5. Perfectly headphone protection circuit.
6. 1200MAH rechargeable lithium battery, up to 12 hours of battery life (different impedance headphones, different endurance).
Specifications
- Output power: 320mW (at 32 ohm)
- Headphone Impedance: 16 ~ 300 ohms
- Total Harmonic distortion: <0.0005%
- Frequency Response: 20Hz ~ 20Hz
- SNR :> 110Db
- Built-in rechargeable lithium battery 1200mAH
- Weight: 0.5kg
- Dimension (L * W * H): 100 mm * 61mm * 13mm
- Color: Black / Silver
- Accessories
3.5mm audio cable x 1
USB charging cable x 1
Band belt for Headphone amplifier x 2
Applications by HIFI Audiophiles
