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Single Ended Mono Block Power Amplifier
Transmitter Evo gives an opportunity to listening the sound from two different mode - high power setting to 80W or low power to moderate 40W, both of pure direct heated triode (D.H.T.) type. With power of 80W in single – ended configuration there is a capability to drive wide variety type of  loudspeaker.
 
Philips (or equivalent) QB5/1750 type as output device represent high technology in vacuum tube manufacturing. Potential of output tube reach 565W of heat dissipation!
 
Transmitter Evo used only 35% of max. dissipation that significantly decrease working temperature point for further reliability improvement. Construction of output tube is very robust in mechanical domain resultated in microphonics-free sound reproduction. Special designed pure inox cover cage additionally improved negative vibration feedback effect from the environment, correlate to further increase of micro detail in sound reproduction. For the audiophiles with sensitive loudspeaker Transmitter Evo offer low mode option to lower the output power to 40W that further decreased power consumption of output tube - resulting to much lower heat dissipation.
 
Input and driver tube (double triode) in Transmitter Evo is made by military standard, indicated as N.O.S. (new old stock)  grade of the highest quality.
 
Wide-bandwidth output transformer (custom designed for NAT ) is used in Transmitter Evo. Output speakers connectors are realized in laboratory grade style. NOTE: Transmitter Evo may drive speakers from 2 ohms to over 16 ohms. Zero global feedback concept is the best solution for purity of sound reproduction without negative influence from wide variety of speaker impedance. 
 
Power supply section participate in sound quality as well as amplifiers main circuit. Silent power unit is designed for double the power then driver of Transmitter Evo consume. There is a separate voltage regulators for all amplifier stages including the output one. Tonal quality is independent from line voltage fluctation. Soft start tubes filament supply additionally improved Transmitter Evo reliability by avoiding inrush voltage stress during turn-on procedure.
No any adjustment of output tubes standing current is necessary. Automatic bias circuit adjust current through mighty QB5/1750 tube.
 
Quality of electronic components that is used inside Transmitter Evo are at high level -  graphite military grade power resistors, Ohmite resistors, Vishay 0.1% resistors, Cornell-Dublier ultra low ESR capacitors, electrolytic capacitors for 105C of operating temperature, last generation of semiconductors, laboratory grade connectors, pure silver-ofc input wiring…
 
Transmitter Evo works properly at world wide AC line voltage from 100 – 250 VAC, 50-60Hz (different voltages set in factory only).
 
NOTE:
-Standard version use pseudo-balanced input
-First step of upgrade : pure-balanced input realised with hand wound nano-crystalline core transformer
-Premium step of upgrade : pure-balanced input realised with hand wound silver-ofc wired nano-crystalline core transformer
 
NOTE: Protect covers should always be placed over output (big) tubes due to safety!
NOTE: Black and silver color option