Intellibox II can program Tsunami sound decoder

[torikoos]

It was V3.5 at that time. I got a V4 none sound later to check the humming sound but it did not improve.
Zimo sound would be a real alternative as I am absolutely satisfied with Zimo's motor handling. But it is not worth the time and money for me. Two Bachmann "low cost sound" engines is about the level of sound I need.
A perfect Atlas engine (e.g. GP40) controlled by an Zimo decoder gliding silently over the rails is candy to my ears

I agree, with you Reinhard, ESU didn't change the design (at all) much as far as the motor drive was concerned. It is a bit noisy, but it is very effective, I wonder if it's the price to pay for not getting any heat developing, some decoders do get warmer than others.

In any case, your vision of an Atlas GP40 gliding silently is also very appealing.

Koos