Feliks Audio Echo II


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

The qualities of the Feliks Audio Echo II, 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 pre-amp for both tube and solid-state amplifiers.

Specifications of the Feliks Audio Echo II: 

  • 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