Hola Mitt and Amey01. When I am listening to a solo instrument and I know it is a good recording, Optimal Spectrum is the filter that I use. The manual says that his filter could cause a listener fatigue, I do not get any fatigue when I use it for only soloist instrument, like guitar or piano. Just listen the decay time and all the reverberation time that you get with this filter. There are no black holes, just pure music singing. When the recording it not too good, I use Minimum Phase filter, it is like having an analogue filter on hand, I do not why, but this is my perception. And when the recording is good, for Latin music or very dynamic, I use Optimal Transient XD. It is fun, clean, very dynamic, the bass is not exaggerated, the timbre of the strings is awesome, listen to Salvatore Accardo playing the 2 violin concert of Paganini, third movement, "The Campanella". The triangle and the violin playing the same pitch tone, its a wow! brass and percussion are one of the best, and the highs at my speakers, opens up. Listen to Beegie Adair, Romance Collection, she is playing with her trio, (bass and drums) and the fun and sound is truly awesome. Also, I recommend to you Double Bass Rarities, by Barbara Sanderling, with music of Rossini, Hydn, Couperin and Vanhal. You can get this rare recording at Amazon. It is a German recording. Here, you can listen how good the strings are played, challenging my turntables, Tell us your findings. I know for sure, that you will like the unit as we do. Happy listening!
