Lastly, note that we are not including any UAD or TDM plugins as we wish to discuss native VSTs only (without the need of any additional DSP power). Plus, our intention is to list software based on (more or less) pure algorithms, excluding those based on impulse responses (. Nebula or Line 6 POD Farm) or sample-based plugins (. Scarbee Mark I etc.). Still, it is indeed difficult to evaluate which plugins are based on painstainking analog modeling procedures and which ones are simply "claimed" to be analog modeled while still be based on IRs.