Ok, I finally bit and bought a Fathead II. My current mic pre setup is simple, I have built 3 channels of Seventh Circle Audio pres, 2 channels of the T15 and 1 channel of the API inspired pre. I intend to build 1 channel of the Neve inspired pre soon. In your experience, do ribbon mics like the Fathead mate better with API on Neve circuits for electric guitar tracking? How about MS recording of acoustic guitars (the Fathead is Figure of 8)? The T15s are very good for acoustics, I know that from recent experience. So perhaps that's the ticket for acoustic instruments (the T15s are clean and largely uncolored yet smooth on the high end and on dynamics, really nice). I know, just try for myself and let my ears dictate, but one thing I have learned is that the best guide comprises a combination of following my ears and listening to the "informed" opinions of others. Any thoughts on impedance matching. According to published specs, the Fathead has output impedance <=200 ohms. The load impedance from the pres is 1,200 ohms. Any thoughts on this? I don't see a problem here, just asking. Thanks.