OP-PRO vs OP-PRO/Studio

Gizmo Posted 2021-01-09 12:36 PM (#554716) Subject: OP-PRO vs OP-PRO/Studio Joined: January 2021 Posts: 4 When looking at the S/N (Signal to Noise Ratio) in the respective Ovation Preamp manuals I see: OP-PRO S/N: 87db OP-PRO/Studio S/N: 80db That's a pretty big difference IMHO. However I see literature and posts out there claiming the OP-PRO/Studio is quieter than the OP-PRO. Based on the above numbers that doesn't make sense... Thoughts? alpep Posted 2021-01-10 2:08 PM (#554720 - in reply to #554716) Subject: Re: OP-PRO vs OP-PRO/Studio Joined: December 2001 Posts: 10583 Location: NJ imho it is negligible alpep Posted 2021-01-10 2:08 PM (#554721 - in reply to #554716) Subject: Re: OP-PRO vs OP-PRO/Studio Joined: December 2001 Posts: 10583 Location: NJ in fact I like the op pro better Old Man Arthur Posted 2021-01-10 7:30 PM (#554726 - in reply to #554716) Subject: Re: OP-PRO vs OP-PRO/Studio Joined: September 2006 Posts: 10777 Location: Keepin' It Weird in Portland, OR I have been known to replace OP-Pro with OP-30. alpep Posted 2021-01-11 12:54 PM (#554730 - in reply to #554716) Subject: Re: OP-PRO vs OP-PRO/Studio Joined: December 2001 Posts: 10583 Location: NJ op pro or op pro studio? Gizmo Posted 2021-01-15 11:09 AM (#554758 - in reply to #554730) Subject: Re: OP-PRO vs OP-PRO/Studio Joined: January 2021 Posts: 4 I had the OP-Pro in my ADII and liked it. I just replaced the OP-Pro/Studio in my 1617-ALE which was had a low level hum/noise and defective tuner, and replaced it with an OP-Pro. The OP-Pro sounds great. I'm not sure trying to go back to the Studio is worth it.