The Mellotron Group

This is the forerunner to SampleTron:

http://www.sonicreality.com/viewDetails.php?ProductID=220&view=info

Some interesting comments by the creator from kvraudio:

To use your Squids Tron you should get SampleTank. I originally 
thought SampleTron would be able to read it but this seems to not be 
the case. The sounds have different IDs completely. So, even the 
sounds that came from Squids Tron inside SampleTron are actually 
reprogrammed differently and have different IDs that SampleTron can 
read (and ST) but not the other way around or it could get confusing. 

Here's what is different about the way they are programmed for 
SampleTron. A sort of "Best of Squids Tron" is within it but they are 
programmed where they are both looped and non-looped 8 seconds all in 
the same sound. You just turn a knob to get "sustain" (default 
otherwise is "purist 8 seconds- at least on Mellotron and Chamberlin 
sounds). I know we didn't include the non-looped Ampex and Chamberlin 
stuff though. The 8 seconds is done by a hold function instead. For 
the completely esoteric sound of the tape ending though your Squids 
Tron will occassionally offer a quirky noise or two that isn't in 
SampleTron. The extras like harmonium and toy piano are also not 
included in SampleTron (but you get plenty of NEW extras like 
Stylophone, VP330, 360 Systems etc.) 

Over half of SampleTron is completely new (and basically the same as 
Squids Tron Vol. 2). But it is important to note that Squids Tron 
Vol. 2 is not coming out in SampleTank format! SampleTron IS Squids 
Tron Vol. 2 (plus the best of Vol. 1) in SampleTank format. You will 
see that Squids Tron Vol. 2 in Reason format and whatever other 
formats we do will be the same price as your discounted upgrade from 
Squids Tron Vol. 1 to SampleTron is. So there is no reason to make 
two products (plus, trust me if you are a Squids Tron Vol. 1 user you 
will WANT the updated programming we did on the sounds we chose from 
it as they do more now... also some knobs to adjust noise amount and 
tape artifacts... not to mention an inspiring vintage interface).