Direct heated triode (D.H.T.) type 6C21 (or equivalent) as output device represent high technology in vacuum tube manufacturing. Potential of output tube for audio purposes reach 300W of heat dissipation! Magma M HPS used operating point that significantly decrease working temperature for further reliability improvement. Construction of output tube is robust in mechanical domain, resulted in non - microphonic sound reproduction. Special designed aluminium pipe cover cage additionally improved feedback vibration effect from the environment, correlate with increasing of micro detail in sound reproduction. For the sensitive loudspeaker Magma M HPS offer low mode option to lower the output power from 130W to 50W. Further, it decreased power consumption of output tube that resulting to additional lower heat dissipation.

Input and driver double triode tube 6N6P is chosen as N.O.S. (new old stock) grade of the highest guality. Hand coiled wide-bandwidth output transformer (custom designed for NAT) is used in Magma M HPS. Output transformer (hand coiled as well) is constructed with no less than 40 separated different layers. Bandwidth reach 9Hz - 70.000Hz as exceptional good flatness for single - ended zero feedback amplifier. Output taps for 4 and 8 ohms speaker load are realized with laboratory grade connectors.

NOTE: Magma M HPS may drive any load from 1.5 ohms to over 32 ohms. By specific technical approach, output transformer in combination with output tube may drive easy any type of loudspeaker with damping factor equally as in push-pull configuration. Zero global feedback concept is the best solution for purity of sound reproduction without negative influence from wide variety of speaker's impedance. Magma M HPS may drive all type (electro-static, magneto-static, dynamic or other types) of speaker equally.

Power supply section participate in sound quallity as well as amplifier's maincircuit. Silent power transformer is designed for triple the power then Magma M HPS consume.  There is a separate voltage regulators in zero feedback manner for all amplifier's driver stages. Equivalent available energy from power supply is equal to no less than 500 Joules of energy. Soft start additionally improve Magma M HPS reliability by avoiding high voltage stress during turn-on procedure.

No any adjustment of output tubes standing current is necessary. Electronic circuit automatically adjust current through mighty 6C21 (or equivalent) tube no matter of tube duration - means constant current in time domain - from the brand new to the near end point of tube life.

Quality of electronic components that is used inside Magma M HPS are at high level: aerospace grade foil resistors, military grade power RF resistors, Vishay 0.1% resistors, electrolytic capacitors for 105C, last generation of IXYS semiconductors, Schutzinger laboratory grade connectors, gold plated all tube sockets, pure silver input wiring ...