Id like to recomend Benedini TBS Mini sound card - Im using it in many of my tanks.
In my opinion it have very qood sound quality and sounding more natural than Elmod Blaster - the price is probably similair.
The advantage of TBS Mini is more natural structure of the engine sound project than in Blaster and great library of engine sounds for many tanks (especially for German WWII like Panther, Panzer , Bovington Tiger I, King Tiger , the Russian T-34 have also very nice sound).
Benedini uses only six engine sound samples for each tank project but the result is very good. It is also possible to reprogram the sounds in TBS Mini using special USB interface or create own tank sound projects, using real tank recordings from Youtube.
Thomas Benedini Products website
http://www.benedini.de/Home_E/Produc...roducts_e.html
Manual for Benedini TBS Mini
http://www.benedini.de/Home_E/Produc...BSMini_7_E.pdf
Some recordings of my tanks with Benedini TBS Mini inside are attached below - sorry for the poor quality of recording (v silent due to not good microphone quality). I modified on my own original engine sounds using recordings from Youtube
T-34
http://www.youtube.com/watch?v=z9oAl55jGrM
Sherman with radial engine
http://www.youtube.com/watch?v=n7f7Oufc6Xc
Tiger I (Bovington)
http://www.youtube.com/watch?v=gmYsw7l3_II
Military RC truck
http://www.youtube.com/watch?v=rBaC1wQmb_o
Recently in my KT I exchanged original Tamiya electronics to Elmod ECO and Benedini TBS Mini too. Added 6W amplifier and big Visaton 10 cm bass speaker and now tank is sounding great.