Click here to to see Se3 Single Ended Mono Block photo gallery.

NAT proudly introduced new state-of-the art product in power amplification section. The Se3 Second extension Single Ended Power Amplifier has several special features, so different again the competition.

This is a zero feedback direct heated triode mono block power amplifier. Output stage employ three 845 B connected in parallel. This stage bring more power to cathode coupled output transformer which increase damping factor up to 50 (damping factor of other standard construction range from 3 to 5). It produce much better power control of variable speaker's impedance. This Single Ended Power Amplifier can easily drive almost any standard type of speaker.

Driver section use two 6N23P-EV(6922) and one VT-4-C tubes all by military grade.

Hand wound output transformer is special designed for this power amplifier with no less than 42 separate layers in it.

Even power transformer contain 12 separate section to supply the amplifier, with over of 1000 W power.

Model Se3 is conservatively rated to deliver 70 Watts into 8 or 4 ohms in pure class A operation with zero feedback concept.

Each mono block amplifier is carefully hand crafted with best quality part such as Vishay resistors, WIMA polypropylene high voltage capacitors, WBT input & output connectors, all military grade vacuum tubes with long life operation.

Special care has been taken in designing a high voltage (+1300 VDC & +500 VDC) zero feedback, high speed regulator. Voltage regulator stages use last generation transistors. This type of regulator has the same concept as the power amplifier circuit (zero feedback) and makes a perfect match together.

The Se3 Single Ended Power Amplifier works at all world wide AC line voltages from 100 VAC to 240 VAC.

The Se3 Power Amplifier has neutral and transparency of zero feedback triode concept & bass control of best solid state amplifiers in the same unit. This satisfy audiophiles dream to have all demand in one device.

We believe that Se3 Single Ended Power Amplifier represent really innovative product in audiophile's aspect, over the world.

Download September Web Previews (379 kB, PDF Format) written by Mr. Scot Markwell and read something about Se3. Linked with kind permition of Mr. Mark Fisher The Absolute Sound publisher.

Type

Single Ended Class "A"

Power Output

70 Watts @ 4 & 8 ohms, 1kHz

Frequency Response

4 Hz to 100 kHz; 20Hz to 20kHz ± 0.2db (at zero feedback)

Input impedance

100 kohms

Input Sensitivity

2.35 V RMS for full power output

Gain

20 dB(x10)

Rise Time

3.5 microseconds

Noise

101 dB below rated output

Damping Factor

>50 (at zero feedback)

Tube Complement

2 x 6N23P-EV, VT-4-C, 3 x 845 B

Power Requirement

110 VAC or 220 VAC @ 50 Hz to 60 Hz, 500 VA