
Il existe des décodeurs son chinois, les DXDC 5302, qui peuvent s'adapter à nos locos européennes ou américaines
Les spécificités que j'ai trouvées chez un vendeur (en anglais désolé, mais tout le monde comprendra je pense

The DXDC digital sound decoder supports the 14-step, 28-step and 128-step speed control of the DCC protocol. The
lights of the locomotive are operated by 6 function outputs. Two function outputs of them provide 8
lighting effects including the dimmer, the warning effect, the blinking by speed effect, the random blinking
effect, the strobe light effect and the 3 fixed-frequency blinking effects. By adjusting the CV settings,
more than thousands of lighting effects are provided. As regards the sound features, the decoder
supports up to 64 sound effects and up to 4 mixing sound effects can be heard at the same time. The
light output and the motor circuit are coming with over-load protection to reduce users’ loses caused by
accidents8 Pin Back-EMF DCC sound decoder
Length: 34mm
Wide: 15mm
Thick: 7mm
Working voltage?12V-26V
Max. input current?1.0A
Function output voltage?16V
Function output max current?300mA
Lighting output max current?300mA
Motor output max. current?500mA
Working temperature?0—80°C
Speaker impedance?100ohm
Exemple d'une loco vapeur "lourde"
http://video.aol.fr/video-detail/dxdc-5 ... 3943970126
Diverses locos diesel, version "lourde" aussi
http://v.youku.com/v_show/id_cb00XMTI3MDE3MjQ=.html
Le prix ? décodeur + HP + port = moins de 58€