Headphone Tube Amplifier Miltra OTL-8XT

Headphone Tube Amplifier Miltra OTL-8XT


Miltra OTL-8XT is a tube headphone amplifier based on 6N13S tubes and relay resistor ladder volume control.

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Miltra OTL-8XT is a tube headphone amplifier designed for music lovers who appreciate full sound, high durability and quality.

  • 8XT – “eight times triode” – each tube is double triode.
  • Class A amplifier.
  • Default driver triodes is soviet made 6H8C – new old stock – mostly from 70’s.
  • Power triodes is soviet made 6N13S NOS – new old stock – mostly from 70’s.
  • High-quality electronic components from brands such as WIMA, Nichicon, Alps, Vishay.
  • Ball-bearing volume knob – precision and reliability unheard of in any other audio equipment. A rigid 10mm brass axle mounted on two bearings. Very smooth movement.
  • Volume control based on a relay resistor ladder – very precise and equal in both channels, fully analog audio path and digital microprocessor control.
  • Volume level presentation on LED’s.
  • Full automatic start delay for tube heating – longer tube life.
  • The ability to change driver tubes and experiment with the sound.
  • Professional design based on high-quality PCBs.
  • Powder coated housing.
  • 12mm front panel made of the highest quality anodized aluminum.
  • Inscriptions on the front – engravings finished by hand with paint.
  • Source selection – two sets of gold-plated RCA inputs.
  • 2 years warranty
  • Manufactured in Poland

Technical parameters:

  • Output power RMS: sinus 1KHz @ 250Ohm – 550mW per channel
  • Frequency range: 10Hz – 60kHz +/-3dB
  • Volume control range: -78dB to 0dB with resolution 1dB per step
  • Dimensions: 284x170x205mm (LxWxH)
  • Weight: 7,5kg





HighFidelity.pl Review (PL): http://highfidelity.pl/@main-4063&lang=

Additional information

Weight 12 kg
Dimensions 40 × 30 × 30 cm
Driver tubes


Power voltage

230V, 115V