NVS-211SE Tube Power Amplifier


Introducing the new NVS-211SE single ended directly heated triode amplifier. The NVS-211SE delivers the superb sound quality of the original NVS-211SE and now produces 20 Watts RMS into 8 ohms.

The NVS-211SE is a 100% pure class A single ended vacuum tube amplifier. The Type 211 directly heated triode vacuum tube is justly famous for its huge soundstage, sweet tone, and authoritative presentation of music. The tube compliment combined with innovative circuitry maintains the right combination of pace, rhythm, and timing.. The NVS-211SE is designed to drive medium, as well as high efficiency speakers. Quality, Value, and Performance, by Navison audio, "Hand made in VN with a passion for sound since 2006"


  • TangoOutput transformers
  • Cardas Gold Rhodium RCA input jack
  • Riken Resistor
  • Audio note Rhodium binding posts
  • Jensen capacitor
  • Nichicon filter capacitor
  • Special oversize power supply design
  • Mundorf capacitor
  • WBT solder
  • Barian kingwood sheathed chassis
  • Point to point hardwired audio circuit


Circuit Type: Single-Ended Class A Triode.
Power Output: 40 watts Class A into 8 Ohms (both channels driven).
Input Sencitivity: 2v RMS for full output.
Input Impedance: 100k Ohms RCA.
Frequency Response: 18Hz - 22kHz.
Hum and Noise: -80dB below rated output.
Distortion: less than 1.5% THD.
AC Power Requirements: AC 115v - 230v @ 50/60Hz.
Power Consumption: Approximately 140 watts.
Weight: 37lbs.
Dimensions: 24.8(D) x 9.05(W) x 8.86(H) inches
Warm-Up Time: 10 Minutes.
Tubes: 1 x 211 (output), 1 x 6V6 (second stage), 1 x 6SL7 (first stage).
Break-In Time: 100 hours of music playing time.

Every Navison product is patiently and carefully hand assembled, then individually inspected and its performance verified by an experienced audio technician. The owner is protected by our three year limited warranty covering labor and parts except vacuum-tubes. Service is a top priority at Navison audio.

Owner’s Manual