From the energy of two small batteries a portable CD- or MP3-player nowadays feeds us with over 30 hrs of music. However, the use of a supply voltage of just 3V has its price as far as sound quality is concerned. Many headphones require quite a high signal to obtain reasonable sound levels. The supply...

Take the design of the SYMPHONY, remove the DAC section, add a few small improvements to the amplification circuitry and exchange the luxurious enclosure for a more modest and plain version and what you get is the CONCERTO.

Of course this amplifier also uses the concept of active balanced headphone...

Without doubt the SYMPHONY is the best headphone amplifier we ever made. Of course this amplifier also uses the concept of active balanced headphone ground. With this concept each headphone connection wire carries an additional signal such that the sum of the potentials of the wires equals zero. This...

The CANTATE.2 uses the concept of active balanced headphone ground to minimize to total sum of the potentials of the headphone wires. This concept strongly minimizes the energies stored and released in the electrical fields inside the dielectricum (the insulation) of the wire when an audio-signal is...

The CORDA SWING is a small budget-amp with a big sound. It has a warm and detailed sound with a strong PRAT (Pacing, Rhythm and Timing). This one really makes you tap your feet! We feel it's a very nice entry amp for a nice price!

Of course this amp also has a crossfeed filter as well as a gain-switch...

From the energy of two small batteries a portable CD- or MP3-player nowadays feeds us with many hours of music. However, the use of a supply voltage of just 1,5V or 3V has its price. Many headphones require quite a high signal to obtain reasonable sound levels. The low supply voltage simply doesn't provide...