Just recieved my SX-V900 (black SX-V90) today. I was expecting something just slightly better than the SX-3900 I disposed of a few months back. But, WOW!!! This thing is actually GREAT!!! Stuffed inside is a big 'old Toroidal Transformer. And, you know how I love those! Then there are those two seperate banks of heatsinks with 4 discrete output transitors on each one. Better yet! The two 71V 15,000 uF ELNA filter caps are a bit less than I could hope for, but, I've got to admit that this thing sounds REALLY GOOD! Out back, there's a Pre-Out/Main-In, which is an abolute requirement for any Receiver I buy now. Why does it sound so good? Probably, because it has the same basic technology as Pioneer's A-90 Amplifier and F-90 Tuner. Specifially, it has a non-switching DC amplifier rated at 125 wpc @ 0.005% THD. The A-90 featured a 200 wpc non-switching amp and the A-80 had a 125 wpc version, so this is basically the A-80's amplifier section. The FM Section features the F-90's Digital Direct Decoder circuitry with a S/N Ratio of 82 dB in Stereo, which is almost unheard of in a Receiver. Seperation is 50 dB. The broadcasts sound exceptionally clean and clear. Also, the SX-V900 also has one of the brightest, most attractive Fluroscan displays I've ever seen. The a huge "water-fountain"-style power meter and the station display is also about as large as I've ever seen. For 1985, Pioneer was definately ahead of the pack in display technology. Best of all, even after 20 years, thing thing functions flawlessly. No noise in the switches and the power delivery feels immense. This thing actually tested out at almost 150 wpc in a Stereo Reveiw Test Report. I'm still hoping to get an A-90 to go with my F-90, but those are few and far between. However, this taste of Pioneer's non-switching amp. technology has got me going! The SX-3900 was the first Pioneer Recevier with the non-switching amp., however, this is two generations farther alonge and it's clear that Pioneer was on the right pathy. It's a technology that really produces audible results. The SX-V90 will do just fine for now. So, I'm most assuredly not going to be shedding any tears over the sale of my SX-3900, handsome as it is/was. The SX-V90/V900 is simply superior in almost every meaningful respect. When time permits, I'm going to pit it in a comparison test against the Yamaha R-2000, The Carver Receiver, the Kyocera R-851 and R-861, Luxman RX-103, Kenwood KR-1000 Galaxy Commander and a few other mid-80's TOTL units I have lying around here and see how it does. Frankly, I expect it to come out on top. I'm THAT impressed with it. For a TOTL Pioneer, this one goes right under the radar. If you have a chance to get one, by all means do so. You'll be thanking me for this information.