See you at SNA audio show Melbourne - Oct 2019 - FINEMET® OPT Transformers !


Featuring FINEMET® Output Transformers, simply the best !

Exhibiting in room 1202 ,featuring Nano-AT , NPA & Teramoto FINEMET® , Contrast & Whydham Audio.

Hand Built in Australia ,Single Ended 2A3/6A3/300B with M19 or Teramoto FINEMET® -Nanocrystalline Output Transformers. All Nano-AT Amplifiers , 115/230v 50/60 Hz 4-8-16 ohms options. We will release a 14 watt SE EL509 in 2020, please scroll down for details.


Welcome to the new wave of audio design at Nano Audio Technology - Nano-AT    Pending

 email -

We build Bespoke Single Ended Amplifiers  in Australia , both SE2A3/ 6A3 /300B using M19, or Teramoto  FINEMET® Nanocrystalline output transformers. (your choice)

Nanocrystalline has no real equal out on the market at present.

 These have the best permeability of all , for audio output transformers.
The 2A3 or 6A3 uses a Loftin White inspired design .
A 6SF5 DC coupled ( no capacitor ) input tube wired directly to the 2A3 or 6A3 output tube with a single piece of Neotech OCC copper wire .
A GZ34 rectifier with low voltage drop, soft start to prolong tube life .
This design exhibits astounding clarity and very low distortion.
Lush midrange , excellent bass and very extended high frequencies.

5mm  Alloy top and bottom plates supported between Russian Birch Plywood  ( hand rubbed shellac ) acting as a vibration proof platform.

EU made ,custom wound ,low noise Toroidal Power transformers
Simply the best !  

Available in many different powder coat finishes and colours .

* * please note designs and products are upgraded /changed  from time to time. 

Parts are sourced locally and overseas, mainly Japan,USA and EU

Singe Ended SE300B / E280F or 6E5P input tube in triode mode. Using M19 or FINEMET® - Nanocrysalline Output Transformers & Dual RCA input Integrated Option with TKD Volume Control,the SE300B is also available as a PSE 20 watt monoblock.


This 8 watt design features ( triode mode ) E280F or 6E5P ( New Option ) driver tube's with Constant Current Cascode Source on the Anode's to ensure the Teflon Coupling  Capacitor is always charged, providing very low distortion, maximum gain, the driver tubes extended frequency response from 10Hz -100Khz ,excellent dynamics and absolute clarity in driving the 300B output tube.

Input signal wiring is all Neotech OCC Copper point to point, all hand made and bespoke.

A GZ34 rectifier is used for very low voltage drop resulting in excellent bass and dynamics. 

No less that five regulated power supplies.

Dual rail, dual choke with all Polypropylene Power Supply Capacitors.

Rod Coleman Constant Current Source on the 300B heaters a step up from a basic IXYS/ capacitor or AC trim pot. Hum is gone so high efficiency speakers are perfect for this Amplifier .

The Circuit is carefully optimised and retested for the lowest distortion and best bias points for linearity.

Both the E280F or 6E5P  ( option ) running in triode mode have more than double the current of a typical 6SN7  or ECC82/83 Plate, enabling much greater control of the 300B grid especially when demanding transients are present.

>>>> This Amplifier design is  available with a number of output transformer options.

Electra- Print M19 copper or silver PSSS secondaries, Amorphous or FINEMET®   Nanocrystalline output transformers, 20 Hz - 50 KHZ -1dB


The Mono - block chassis would run North South rather than East West as with the 8 watt  stereo version, ie the narrowest part would be at the front.

Please read Technical Data tab regarding these output transformer choices and performance.

With a Tesla rating of T1.3, FINEMET® Nanocrystalline  is a market leader for crystal clear presentation of all music styles.

It has up to 1/5 the core loss of normal silicon steel cores, enabling very low distortion and insertion loss ,having the best permeability of all audio output transformers .

It allows you to hear deep into the mix, combined with multifilar winding techniques has no equal in this regard.

Bass is fast and solid, midrange has a vividness of character as if you were there and the highs have excellent detail where every breath and nuance is captured.

Electra- Print M19 EI core with PSSS Silver secondaries is well extended  in the bass region, able to sustain high levels of DC Flux saturation for very  stable bass response and a full and smooth midrange , where C cores are a little leaner.

High end is very detailed with the silver without being edgy or bright.

We also supply with Electra - Print  M19 copper secondaries and OCC copper.

The Teflon Coupling Capacitors we use enable a very large sound stage with absolute clarity without being bright or edgy at all.

No other component has more influence on an amplifiers sound quality than the output transformer, it is at the heart of any tube amplifier design.

Further information on drop down tab's.

Included in all designs we have EU, custom wound low noise Toroidal Power Transformers, the same brand/type that Aries Cerat use.

Rod Coleman Constant Current Source Heater & Plate  supplies for the 300B, simply the best way to achieve quiet running & performance of the 300B , a very marked improvement on AC hum pots.

Please refer More TAB for technical details and Signature Series Pure Silver Secondaries, POA

Nano-AT ™ will release new custom wound Double C core Nanocrysalline-FINEMET® Output Transformers with improved bass responce at Stereonet Melboune HiFi Show 2019 . A Stereo Single Ended EL509 14 watts ( Amorphous Transformers )and New Push Pull range of Amplifiers due for release in 2020. EL509 PP 100 watts


This new to be released,

 Push Pull Range, fully Class A.

Stereo EL84M 15 watts


 EL84M PP 24 watts  

EL509 Push Pull 100 watts  A/B

Inspiration taken from  VTL- TT25 Tiny Triode Amplifiers 1991-1993.

These will be perfect for Lowther Speaker Lovers and Horn Drivers or Full Range Speakers.

Contrast Audio Range of Speakers sold in Australia are a perfect fit for all our range.

More details to follow.


High Efficiency Speakers suitable for our Amplifiers can be found at


Nicely Potted m19 electra-print, High end Silver or copper s

Partial Silver and Solid Silver Options for the Silver SE PX25 & SE300B Design.

M19 Silver wire audio transformers have been known to make an improvement in audio reproduction for decades. Silver has a higher sensitivity to flux change (200%)  enabling it to reproduce lower level  information produced by the output stage including harmonics produced by musical instruments. 

" Electra -Print  Quote "

 We offer transformers using Copper , Partial Silver Stranded Secondary (PSSS) as well as Solid Silver.

Nano-AT use Solid Silver and Gold hook up wire in the signal path and Silver RCA inputs with PSSS range and Neotech OCC Copper with the Copper secondary option.

These transformers are ruler flat from 20Hz-25KHz ,quite stunning performance  in our SE PX25 and our SE300B range of Amplifiers.

8Hz-40KHz -3dB 

  Our Electra- print M19 range has the new 6E5P Gold Grid input /driver tube with constant current source Plate power supplies, that produce an extremely liner response with distortion down close to 0.03% for this tube.

Both the  Constant Current Source supply on the Plate's and Heaters are required to get the desired performance from the 6E5P tube at such low distortion.

The Amplifier B+ power supply is also fully regulated to enhance this particular design. 

A true High End Audio Product !

So if Silver or Copper is your thing here we are .

More soon on PP Nano-AT



SE EL509 in Triode mode,release in 2020

Single Ended EL509 14 watts in Triode Mode

We will release a Single Ended EL509 Amplifier with Custom Wound Amorphous Double C cores with %5 CFB Winding on the same chassis as the SE300B. This will be a high current , low distortion design to drive speakers from 90dB/1 watt and above

More Information Soon

Pricing and design details .



FINEMET® Nanocrystalline double c core


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