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Feliks Audio

Feliks Audio Echo Mk II Headphone Amplifier

Feliks Audio Echo Mk II Headphone Amplifier

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Regular price $995 In stock now!
Regular price $1,099 Sale price $995 In stock now!
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Feliks Audio Echo Mk II


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 ohms). 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
  • Custom-made stabilized toroidal transformer with electronic ripple suppression
  • Automatic bias circuit, so no tube re-biasing needed 
  • Preamp safe mode
  • Extended 3-year warranty

Box contents

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

Specifications (2021)

Tube complement: 2 x 6N6P, 2 x 6N1P

Frequency response: 15 Hz - 45 Khz +/- 3 dB (300 ohm)

Optimal headphone impedance: 80-600 ohm

Inputs: 3 x RCA line

Input impedance: 100 kOhm

Power output: 380 mW

Headphone output: 6.3 mm