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Feliks Audio

Feliks Audio Echo Headphone Amplifier (OPEN)

Feliks Audio Echo Headphone Amplifier (OPEN)

Regular price $611.10 In stock now!
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Regular price $679 Sale price $611.10 In stock now!

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Feliks Audio Echo


In the way of purist fidelity, the Echo performs extremely well. In fact, I am fairly positive this is the best sounding tube amp I’ve ever heard for bass and midrange quality, bar none, in the price tier."
"Oh my. That is very silky smooth. For usage with my ZMF Auteur, the Echo sounds and feels amazingly pristine."
"The Echo has exceptional vocal clarity and headphones with a relaxed presentation will shine absurdly well with it. If you have a Focal Elear, this is a great amplifier for you.


The Echo is an output transformer-less (OTL) headphone amplifier and preamplifier featuring  6N6P and 6N1P tubes. Despite being Feliks’ entry-level amplifier, the Echo is no slouch when it comes to presenting a highly musical and well-extended sound. The Echo is slightly warm, smooth, intimate, and laid-back, flattering a wide range of headphones.

These qualities, in addition to incredible build quality and brilliant engineering, amount to an amplifier that performs far beyond its class. It is fully handmade and the headphone sweet spot is for medium to high impedance headphones (from 100 ohm). It can also be used as a tube preamp for both tube and solid-state amplifiers. 

  • Incredibly detailed presentation
  • Very low noise levels and AC interference
  • Broad frequency response, 15 Hz to 45 kHz +/- 3 dB
  • Gold-plated ceramic tube sockets
  • Input and output safeguards eliminating power on / off noises
  • Wooden, solid oak side panels
  • Extended 3-year warranty
  • Custom-made stabilized toroidal transformer with electronic ripple suppression
  • Automatic bias circuit, so no tube re-biasing needed


Specifications (2018)

  • Power tubes 6N6P x 2, driver tubes 6N1P x 2
  • Frequency response: 15 Hz - 45 Khz +/- 3 dB (300 ohm)
  • Input Impedance: 100 kOhm
  • Power output: 350mW
  • THD: 0.4 % (300 ohm, 20 mW)
  • Optimal headphones impedance: 100 - 600 ohm
  • Preamp safe mode
  • Headphones output: Jack 6.3mm
  • RCA audio input
  • RCA audio output (pre-amp)
  • AC: 230V/120V (power cord included)
  • 2 years warranty

Box contents

  • Beautifully hand-crafted tube amp
  • 1 pair of driver tubes
  • 1 pair of power tubes
  • AC cord
  • User manual
  • Warranty card