old high end preamps..

Keep the Bryston

Hello, my choice Sonic Frontier SFL 1.

Modern system devices like the miniDSP SHD may be positioned to disrupt the traditional pre-amplifier market.
The SHD combines a set of analog and digital inputs, with the Analog Devices SHARC implementing Dirac Live 2 projects directly into the excellent AK4490EQ DAC. An absolute minimum of cabling and excellent design results in ultra low noise and low distortion.
Not to mention, a properly implemented Dirac Live 2 project is like removing Coke bottle lenses from your eyes for the first time.

I have a 1989  P S Audio 5.5  pre-amp. They are pretty rare to find these days
 The sound is incredible. For the cost, back then I don`t think you could do better.
I had a Nad pre-amp that didn`t sound half as good as the PS Audio, and sold that.
I also had a 1989   4004 Aragon 200 watt power amp. Great amp but got SUPER hot. You couldn`t put your hand on top of it I  went threw 2 in 2 weeks. I finally got one that didn`t blow.  I just sold that for a Bryston. I actually liked the Aragon better, That model Aragon is hard to find. I might get a Classe power amp now. I would love a Krell, but the cost is out of my league.  
 I have Bowers & Wilkins speakers which I like, and a Oppo DVD player.

I have a separate home theater system 

@skiroe You can look at the images on their website.  Some products say "Made in USA" while others say "Assembled in USA" on the back panel.  The old Dennis Had products, which IMO put Cary on the map - are the ones made in the USA.  These include the SPL-98, the SLP-05, CAD-805, etc.

The newer products after Dennis sold out are not of the same caliber IMO.