In May, I did not hear aberrations you cited. I listened exclusively to my own master recordings ( had my modified Korg MR-1000 with a chock full HDD and used it for ALL but few listenings - that did not provide for anything that was not provided by the exhibitor - and these were mostly avoided ). My concerns about the reliability also mimic yours - only time can tell. Hope for the best !!!
7/9/15 at 5:07pm