Feliks Audio Echo MK II | OTL Headphone Amplifier and Preamp

Achieve Highly Musical and Well-extended Sound with Feliks Audio's Echo MKII Headphone Tube Amp

A great introduction to tube sound but with Feliks quality
Warm “tubey” sound with plenty of detail, easy listening at its best
Handcrafted, beautiful metal and walnut wood side panels
Incredibly detailed presentation, very low noise levels, minimal AC interference






Bloom's Take
Feliks Audio has a reputation for building OTL and Tube headphone amps that look great but sound even better. The entry point is the Echo MKII OTL tube amp at just over a grand which gives off cool vibes and sports a simple design. Its walnut trim would blend comfortably alongside vintage headphone gear, but would also fit aesthetically with modern systems. The warm glow of the tubes looks great when fired up as well. The Echo sports a 6.3mm jack and has decent power for a tube amp at 350mW. You get the inherent “tubey” sound you want but without sacrificing accuracy or transparency.
We think the Echo MK2 is the perfect introduction to the Feliks line of crafted tube amps with its attention to detail and craftsmanship. However, if you’re more budget conscious and looking for an Endgame setup for headphones such as the Meze 109 Pro or Sennheiser HD 660S2, Echo MK2 won’t disappoint.
Read our full review here.






Feliks Audio's Brilliant Entry-level Performer
The Echo MK II is an output transformer-less (OTL) headphone amplifier and preamplifier featuring stock Russian 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 Ω.) It can also be used as a tube preamp for both tube and solid-state amplifiers.
Echo MK II Features

Broad frequency response
Gold-plated ceramic tube sockets, and custom-made stabilized toroidal transformer with electronic ripple suppression
Input and output safeguards eliminating power on / off noises
Wooden, walnut side panels
Automatic bias circuit (no tube re-biasing needed)
Preamp safe mode


Specifications


Impedance: 100 kΩ

Optimal headphones impedance: 80Ω – 600Ω

Frequency response: 15 Hz – 45 Khz +/- 3 dB

Power output: 350mW

Amplification level: 20dB

THD: 0.4 % (300Ω, 20 mW)

Headphones output: 6.3mm


Tubes: (x2) 6N6P, (x2) 6N1P

Inputs: (x3) RCA

Line Out (Preamp): (x1) RCA


Weight: 7.7 lbs

Dimensions: 8.7" x 4.5" x 10.4" (w/o tubes)
Feliks Audio Extended 3-Year Warranty

In the Box

Beautifully hand-crafted Tube Amp
(x2) driver tubes
(x2) power tubes
AC cord
User Manual
Warranty Card