I tried a Nobsound switcher/ pre with a volume control with my Coda stage amp last night. I was surprised to find it better than my long time IRD preamp. More transparent and smoother sounding through my Klipsch Quartets. In fact, I think it overall sounds better than my tube integrated. that kind of bums me out. The quartets have always sounded better with lower gain and my pre, which has variable gain, was best on the zero gain setting. Im certainly not missing dynamics or drive with this little Nobsound.