Last week David and I met to test out additional audio with the most recently modified setups (i.e., Ortofon Kontrapunkt A on less expensive and Kontrapunkt B on more expensive). In total we tested 4 participants. Using both the Michael Jackson (MJ) clip and a newly recorded Pink Floyd (PF) clip, we were still able to determine a difference between the 2 systems. Interestingly, the preference switched between the clips for all participants. For the MJ clip, those participants that could tell the difference chose the more expensive setup, but for the PF clip, those that could tell a difference preferred the less expensive setup.

As a result of these findings, we have chosen to attempt to replace the GSP combo preamps (Jazz Club and Elevator EXP) with the Pass Labs XONO. We will record the same audio and perform a comparison between the 2 systems as we have done previously. If these systems are also found to be distinct, the next step will be to simply record both outputs of the turntables through the same preamp, to determine the effect of the turntable/cartridge combination.