Single Ended EL509 in Enhanced Triode Mode Released .
At Nano-AT each Amplifier is individually handmade by one person from the chassis up, OCC Copper input wire is used, all point to point in the 2A3/6A3 and the best audiophile grade components, including Baltic Birch Ply for its vibration cancelling effects and 4mm Alloy Top and Bottom plates, all CNC water jet cut.
We choose and test each individual component and tube to make sure they reach our tight design tolerances.
No detail is left unchecked.
Over 30 years of professional broadcasting by our chief designer has led us to use our current line up of parts and design including direct coupling of stages, which is the most difficult to balance requiring many more hours of labour, like a finely tuned sports car these designs have led us to a winning performance.
We test and re test voltages and output performance to the strict criteria we set.
All power supply capacitors are all low ESR, the DC smoothing chokes are excellent performers from Canada & USA.
The Constant Current Source Heater's are Rod Coleman designed devices which are hand populated, soldered by us and tested for the heaters of the output tubes , for exceptionally quiet running ,great for high efficiency speakers.
Each Amplifier involves over 50 hours of individual attention.
Choosing Lundahl HiB ,Amorphous or Nanocrysalline Output transformers, are all multifilar wound for extended frequency performance, as is the Metglas-Amorphous Interstage Transformer used in the Amorphous 300B amplifier option.
Amorphous metals are quite rare in production amplifiers and Nanocrystalline ( FINEMET® ) extremely rare indeed due to its expense and design requirements.
Mr Suzuki who is the master winder for General Transformers / Teramoto, has used Finemet C Core Metals for many years.
This metal, with its high saturation flux density compared to other Fe- based metals ,ie Z11 and 1/5 the core loss.
FINEMET® exhibits very High Frequency extension with low distortion characteristics, the level of detail retrieval is amazing it is the best at T1.3, you simply can not argue with the laws of Physics, it just is !
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.
Lundahl Amorphous Transformers are very similar in character to FINEMET® but the detail is not quite as forward in its presentation.
Lundahl's main stay the Cut Core HiB M4 transformers have been in production since 1958, an excellent choice.
They are used extensively in the professional broadcast and home audio market.
The Lundahl performance is characterized by even frequency response across the entire audio band , low insertion loss, low distortion and very stable.
New to us Silk Audio Transformers , more on this soon.