Tried this one on drums and got some interesting results, but only with high Gain settings. The Tube overdrive is relatively fast sounding unnatural in the higher settings, but with subtle coloration and the additional Gain it brings some glue on the Drumbus. I experimented a little and was surprised as I realized that a Transformer like Transature from Analog Obsessions is bringing the sound extremely forward when it is positioned after Valvola in the signal chain. The coloration of the Valvola brings a gritty and rough restless sound to the ears and with added Transformer the unwanted distortion and dissonances disappear and bring some pretty good shine. Although the set-up of the Valvola is a little difficult it seems to be a better take on the tube-preamp sound. Phoenix from Shattered Glass Audio has more controls and EQ, but both plugins are very individual and the result is different with the similarity that both sound good.