Best for under $5,000.00

Not sure..

But what about Rotel?? Since they seem to be brand mates. I thought I would think of them. Unless of course it has to be Tubes??

If it has to be Tubes I would go with the Butler suggestion that "Rlwainwright" has made to have a starting point.

If it has to be an All Tube System, and I have a Speaker System like the B&W 805 Standmounter, and the Electronics cannot exceed $5000.00, then I would look at Rogue Audio and check out the Metis Magnum Preamplifier (which is an All-Tube design) and then mate it with the matching Atlas Magnum Power Amplifier.

On the other hand, for me, I would do the Rogue Audio Metis Magnum Preamplifier and then mate it to a Rotel RB-1552 Power Amplifier. That would give me an All-Tube Preamplifier with a Solid-State Power Amplifier. And then, I would design the rest of my system accordingly with other components that would bring out the best in these two main components. I would look at this as the best of both worlds. And this combination will still leave you with plenty of cash for other components or upgrades for your system.

--Charles--

McIntosh 275 is a great tube amp, on its 6th edition over four decades. So is Leben from Japan. Don't know your speakers but those are great tube amps.

Pass X350 amp and Aesthetix Calypso will have you set and should be more than enough to drive your speakers. You should be able to snag the pair off Audiogon for close to your budget.

Nice all in one is Hegel. Nice DAC/amp combo.

A wise choice would be the CODA CSIb integrated currently listed on Gon for $4300.00. Built like a Rolls Royce and completely made in Sacramento. Considered the most powerful
integrated on the market. Peaks at 300 amperes from both channels. Tremendous power reserve. 330 watts @8ohms and 660 watts @4ohms. Well known for driving 1ohm loads very easily. Has the all the quality of separates. Designed by former Threshold Engineers. A very rich, smooth organic sound with outstanding transparency and detail.