Burson Soloist Headphone Amplifier and integrated Pre Amplifier

Burson Audio

Burson Audio's flagship standalone headphone amplifier with power to burn.

No other headphone amp offers so much power, yet has so few components on the signal path to temper with your music.
  • Powerful and transparent.

    No other headphone amp offers so much power, yet has so few components on the signal path to temper with your music.

    Conventional head amp designs use IC Opamps on their signal paths. And each IC Opamp contains over 50 inferior components which block and distorts music

    Outputting over 4 watts per channel into 16ohm, the Soloist is tailored with a symmetrical current feedback circuit with only 21 components on its signal path. Its signal path is so short and with so little blockage on it that it can achieve amazing sound.

    Over-killed transformer plus over killed power supply equate to peak driving power in any situation with ease.

    The Soloist outputs 4 watts per channel (8 watts for stereo) into 16ohm. To achieve this specification most conventional designs will settle for a 24 watts transformer. We on the other hand know the difference between achieving it momentarily and sustaining it there all the time. Hence we have implemented a 35VA tailored design transformer which ensures that the Soloist outputs at 4 watts constantly, without breaking a sweat.

    The Soloist power supply is built around a noise-filtering network that employs twice as many filtering stages compared to the conventional designs resulting in superior noise rejection. Fed by its 35VA transformer, it delivers clean and stable power. The result is pure music against a pitch-black background.

    The most beautiful enclosure ever made for a headphone amplifier is also the most efficient heat-sink ever made for a headphone amplifier.

    Operating in pure Class-A, the Soloist generates a lot of heat. Music sounds great but the heat was the necessary evil which could harm its many components.
    The enclosure was constructed with CNC machined aluminium to act as a giant heat-sink, which allows the Class-A headamp to run cooler, and remain optimised.

     

  • Most headphone amplifiers use standard IC Opamps in their designs. Such opamps are very cheap and easy to apply, however they are inferior. This is because they are not tailored for a particular audio circuitry, and they contain many low quality and unnecessary components which degrade audio signals.

    Three years ago Burson developed the HA-160 headphone amplifier. Instead of using standard IC opamps on the signal path, they designed tailor made circuitry using high quality discrete components. Because of this, they were able to reduce components on the signal path to optimise its operation. It offered higher resolution and superior dynamics to any IC based design, and yet presented a mid range intonation that many thought only possible from top-tier tube amps. It was good, like a properly designed solid state should, and many in the industry saw it as a benchmark.

    Instead of celebrating and introducing "newer" versions each year with small refinements, they have been studying and developing circuitries that can realise more of our ideals. Now, their dream of an even more idealistic circuitry, with even less components on the signal path is realised. And it sounds more beautiful than any of us could have conceptualised at the beginning of this project. They named this new headphone amp Soloist!

    The New FET input stage

    The input stage of the Soloist is a symmetrical current feedback circuit with only 21 components on its signal path (compare that to a typical IC Opamp of over 50). It's signal path is so short and with so little blockage on it, that it can achieve amazing sound. Also because we only had to select and match 21 components, the Soloist sounds absolutely amazing.

  • Input impedance: 36.5 KOhms 

    Frequency response: ± 1 dB 0 - 50Khz

    Signal to noise ratio: >96dB

    THD: <0.03% at 30ohm with 1W ouput

    Channel separation: <73dB

    Output power: 4W at 16 Ohms

    Input impedance: >8K Ohm @ 30 Ohm, 1W

    Output impedance: <1 Ohm @ 30 Ohm, 1W

    Power dissipation: >25W, internal, regulated power supply