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By Lars Clausen, Denmark since 2006.
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Discrete OPAMPs

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Single Discrete OPAMP Special Edition

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Ultimate performance Special Edition Discrete Audio OP-AMP's for upgrading any existing Audio product. This module is a simple and effective way to upgrade your CD, DVD or Blu-Ray player, or preamplifier, or network stream player by removing the existing OPAMP IC's and dropping these into the motherboard. This way any Audio equipment can upgrade to a true Discrete High End Analog stage with outstanding performance. It will drop directly into DIP8 single footprints in a CD, DVD, Preamp or soundcard.

This Discrete OPAMP based on brand new technology, with a folded cascode which eliminates semiconductor capacitances, and provides world class sound performance in your existing product. Compared to other similar products this module is made with high end thin film resistors, and a special high-speed circuit with extremely low THD (0.0003%). Current mirrors are made with lowest noise LED references. Resulting in a clean and coherent sound experience, with complete 'black background'. This Special Edition of the Discrete OPAMP has a higher Class A point, and therefore uses more power. The upside is it's 3 times faster, and has slightly improved resolution. It can however only be used in equipment with sufficient ventilation, to dispence of the excess heat dissipation.

Discrete High End Sound Quality
Most signal sources, and many power amplifiers use operational amplifiers, as main active component, for amplifying, filtering and impedance conditioning of the audio signal. This means the audio properties of these OPAMPs have a big impact on the sound of your audio equipment. Even OPAMP's with good data, like very low THD specification still have very different sonic properties. This tells us that technical spec is not the whole story and defining factor for sound quality.

Classically there has been a few IC OPAMP's considered good for Audio, and with golden sound performance. But today it is in debate if even these sometimes very expensive chips are really capable of getting the best sound out of your CD player, DVD player, preamplifier or power amplifier. And when you add the fact that most commercial audio players use cheap
OPAMP's and not the classical 'golden' OPAMP's that would cost hundreds of times more, there is place for improvement.

This discrete OPAMP is based on a novel 12 transistor circuit with very high linearity. Therefore low open loop amplification is possible, leading to natural, relaxed sound with a very high detail and perfect tonal balance.
The circuit implies current mirrors, which are here implemented with ulra low noise green LED's. This gives the amplifier very good low noise performance.

The input stage is bipolar unlike some other discrete OPAMP's available on the market. This gives our module the best possible stability under all real-life uses, and also protects it better against static electricity. Bipolar transistors also tend to sound cleaner and more dynamic than FET's in the input stage.

This module is also available in a standard version with lower power consumption, See HERE...

With a reference Clock and a couple of voltage regulators this is the cheapest way to achieve true high-end sound performance, even from mid range audio equipment.

NewClassD ApS | DK7500 Holstebro | Denmark | tel +45 32130963 | E-Mail: |9484