Click here to see Plasma Dual Mono Line Stage photo gallery.

NAT standard model Plasma Dual Mono Line Stage moves to R-remote extension after seven years of producing. There are two high current 6N30P-DR tubes per channel build zero feedback line stage. This concept results in lower output impedance, to control all types of interconnect cables( for driving of power amplifier ).

Ten(10) tubes works in perfect simmetry means five(5) per each channel.

Power supply combine vacuum tube rectification and double regulated stabilization realized with stabilotron tubes (plasma effect) and the last generation of solid state. Plasma power supply has very low and constant output impedance through a very wide frequency response.

Sound quality is totally independent against power supply instability, because all stages in preamplifier contain stabilisation.

Plasma Dual Mono Line Stage has superior sound characteristics.

NAT Audio has review for Plasma R Line Stage  in audio magazine "Tone Audio" March 2009. edition. Click here to download original review from www.tonepublications.com Click here to download review (English) (2.3 mB)

Frequency Response

0.25 Hz to 300 kHz - 3dB; 20 Hz to 20 kHz ± 0.04dB

Noise

< -104 dB "A" weighted @ 1V rms

Gain

10 dB(x3.2);   Phase status: invert(180 degree)

THD & N

< 0.03 % 20 Hz to 20 kHz @ 1V rms

Input Impedance

> 20 kohms

Stereo Separation

> 100 dB @ 1 kHz

Tube Complement

4 x 6N30P-DR; 2 x OD 3; 2 x EZ80 & 2 x 6N2P-EV

Output Impedance

< 300 ohms @ 1 kHz

Power Requirements

110 VAC or 220 VAC @ 50 to 60 Hz, max. 100 VA

Dimensions

19" (483 mm) wide x 18" (455 mm) deep x 5.7" (145 mm) high

NET Weight

approx. 31 lbs. (14 kg) unpacked

TOTAL Weight

approx. 53 lbs. (24 kg) packed