Initial Thoughts: (I've only listened for an hour)
Sony 601ES CD Changer
Pioneer BDP-150 Blu-Ray Player
Polk Audio SDA-SRS 2 (B/B Rings)
So after letting the the amp sit for 1:20, I checked the bias again and ALL of the tubes tested at .394V. So I decided, this is close enough, I NEED to hear this thing. She did NOT disappoint! I listened to Each CD first on the Sony, then on the Pioneer as I am evaluating the Pioneer as a CD Player. It also plays SACD, something I'd like to get into later on.
First up was Diana Krall Love Scenes CD. I listened to the first two tracks All or Nothing at ALL and Peel Me a Grape (GREAT CD BTW). The first thing I noticed, Diana's voice is warmer even with the sl-2000's. However, her voice wasn't veiled which is VERY important to understand. The information in the recording IS getting through. The other thing is the bass is articulate and fast. The guitar and the piano have a roundness that wasn't there before. This was all on the Sony.
When I played the same CD in the Pioneer, I noticed more "air" around Diana's voice and the instruments. The recording had more ambience and it made her seem more "real". Not a LIVE performance but the music had more of a presence than it's ever had before.
The differences between the two players was MUCH more night/day on the Yaqin than the Yami. When I listened to the two players on the Yamaha, I was seriously considering taking the Pioneer back immediately because there just wasn't enough of a difference to justify keeping it. This tells me the the Yaqin is more revealing than the Yamaha, a fact I soon heard in spades.
The next recording I put on was the CSO recording of Mahler's Symphony no. 2. I have LOVED this recording since hearing it as a freshman music major in college. So much so, I wrote my Master's thesis on the Art Song that serves as the basis for the 3rd mvt. Anyway, this recording is ALMOST UNLISTENABLE on the Pioneer-Yaqin-SRS 2 (sl2000) set-up. The violins made me want to jump out of my chair! I had hoped the tubes would tame the sl-2000's. Not the case. The old saying, ****-in;**** out applies. This means I have to find a new recording of Mahler's Symphonies.
In closing, I know it's only been an hour and things are going to change. But I'm a VERY happy camper and if you get a chance, listen to one of these things. You can't go wrong.