- สุดยอดผู้ผลิตเครื่องเสียงเยอรมัน Meier Audio
- แอมป์หูฟังเฉพาะ เพื่อขับศักยภาพสูงสุดหูฟังของท่าน
- input สองช่องรองรับอุปกรณ์ได้พร้อมกัน
- ช่องสายไฟ IEC รองรับการอัพเกรดสาย
- ปุ่มวงจร Crossfeed ออกแบบระบบพิเศษมาเพื่อหูฟังเฉพาะ สามารถปรับมิติเวทีเสียงให้ใกล้เคียงการฟังปกติ ปรับได้สามระดับ
- ปุ่ม Tonal Balance เพื่อ boost เสียงเบส ปรับแต่งให้การฟังเพลงมีอรรถรสมากขึ้น
Active balanced headphone ground offers most of the advantages of a true balanced headphone setup without the need of balanced connections. It can be used with any conventional dynamic or magneplanar headphone.
The volume control is technically very sophisticated. The position of the potentiometer is measured with the use of an AD-converter. The output of this converter is then used to switch a bank of relais to set the proper volume level. There are a total of 64 levels which allows for very small stepsizes and a very analog feeling. The advantages of this concept are strongly reduced channel-imbalances and a much cleaner and more detailed sound. The use of a conventional stereo-potentiometer does add its own sonic signature which is now prevented.
The amplification section is build around AD797 opamps biased into class-A. For the output stages BUF634 buffer amplifiers are used. These integrated circuits are very fast and thus allows the output signals to follow the input signals very closely. The amp is DC-coupled and any capacitors found in the signal path are of the highest quality polypropylen and polystyrol.
A very extensive powersupply, a large number of power-regulators, and a total filter capacity of 80.000 microF (!!) assure the best working conditions for any part of the circuitry.
The built-in crossfeed filter is a frequency-extended version of the natural crossfeed found in previous CORDA amplifiers and provides even better imaging. It also offers three intensity levels (Stereo, medium, high). To compensate for the psycho-acoustic bass-loss a separate switch allows to slightly increase lower-frequencies.
Technically the CLASSIC is an extremely advanced headphone amplifier and offers excellent value-for-money!
Technical details
- Output impedance < 0,1 ohm
- Maximum output 15V / 500 mA.
- Discrete volume control. Typical stepsize 0.5 dB, 63 steps.
- Gain switch. Maximum gain factors -2 / +14 dB
- Crossfeed filter switch: 1. crossfeed MEDIUM 2. STEREO 3. crossfeed HIGH
- Tonal Balance: (compensation for psycho-acoustic bass-losses) 1. compensation MEDIUM 2. OFF 3. compensation HIGH
- 2 pair of analog inputs
- Input impedance 18 kOhm
- Gold-plated input jacks.
- Silver plated headphone jack (Neutrik).
- Silver plated heavy duty switches
- 25 Watts toroidal transformer.
- 110V and 220V mains power switchable.
- Power uptake 10 Watts
- Built-in groundloop breaker.
- Double regulated voltage lines.
- Low impedance electrolytic buffer capacitors (Nichicon Fine Gold). Total Buffer capacity 80.000 uF.
- Bypass capacitors in the power supply.
- Polystyrol and polypropylen capacitors in the signal path. Metalfilm resistors in the signal path.
- AD797 opamps biased into class-A.
- 2 BURR-BROWN BUF634 buffer amplifiers at left and right headphone output channel.
- ชมรีวิวบน website -->
https://www.headfonia.com/meier-audio-daccord-corda-classic/
- ชมรายละเอียดจากผู้ผลิต -->
http://www.meier-audio.homepage.t-online.de/classic.htm
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